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monoterpenoid indole alkaloid</title> <meta name="description" content="Search results for: monoterpenoid indole alkaloid"> <meta name="keywords" content="monoterpenoid indole alkaloid"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="monoterpenoid indole alkaloid"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 131</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: monoterpenoid indole alkaloid</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">131</span> Implications of Oxidative Stress for Monoterpenoid Oxindole Alkaloid Production in Uncaria tomentosa Cultures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ana%20C.%20Ramos%20Valdivia">Ana C. Ramos Valdivia</a>, <a href="https://publications.waset.org/abstracts/search?q=Ileana%20Vera-Reyes"> Ileana Vera-Reyes</a>, <a href="https://publications.waset.org/abstracts/search?q=Ariana%20A.%20Huerta-Heredia"> Ariana A. Huerta-Heredia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The conditions of biotic and abiotic stress in plants can lead to the generation of high amounts of reactive oxygen species (ROS), which leads through a signaling cascade and second messengers to different antioxidant defense responses including the production of secondary metabolites. A limited number of species of plants like Uncaria tomentosa (cat claw) typical of the Amazon region produce monoterpenoid oxindole alkaloids (MOA) such as isopteropodine, mitraphylline, rhynchophylline and its isomers. Moreover, in cultivated roots, the glucoindole alkaloid 3α-dihydrocadambine (DHC) is also accumulated. Several studies have demonstrated that MAO has antioxidant properties and possess important pharmacological activities such as antitumor and immunostimulant while DHC, has hypotensive and hypolipidemic effects. In order the study the regulatory concerns operating in MAO production, the links between oxidative stress and antioxidant alkaloid production in U. tomentosa root cultures were examined. Different amount of hydrogen peroxide between 0.2 -1.0 mM was added to 12 days old roots cultures showing that, this substance had a differential effect on the production of DHC and MOA whereas the viability remained in 80% after six days. Addition of 0.2 mM hydrogen peroxide increased approximately 65% MAO and DHC production (0,540 ± 0.018 and 0.618 ± 0.029 mg per g dry weight, respectively) relative to the control. On contrast, after the addition of 0.6 mM and 1 mM hydrogen peroxide, DHC accumulation into the roots gradually decreased to 53% and 93% respectively, without changes in MAO concentration, which was in relation to a twice increase of the intracellular hydrogen peroxide content. On the other hand, concentrations of DHC (0.1, 0.5 and 1.0 mM in methanol) demonstrated free-radical scavenging activity against 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical. The calculated IC50 for all tested concentrations was 0.180 mg per ml (0.33 mM) while the calculated TE50 was 276 minutes. Our results suggest that U. tomentosa root cultures both MAO and DHC have antioxidant capacities and respond to oxidative stress with a stimulation of their production; however, in presence of a higher concentration of ROS into the roots, DHC could be oxidized. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=monoterpenoid%20indole%20alkaloid" title="monoterpenoid indole alkaloid">monoterpenoid indole alkaloid</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidative%20stress" title=" oxidative stress"> oxidative stress</a>, <a href="https://publications.waset.org/abstracts/search?q=root%20cultures" title=" root cultures"> root cultures</a>, <a href="https://publications.waset.org/abstracts/search?q=uncaria%20tomentosa" title=" uncaria tomentosa"> uncaria tomentosa</a> </p> <a href="https://publications.waset.org/abstracts/71305/implications-of-oxidative-stress-for-monoterpenoid-oxindole-alkaloid-production-in-uncaria-tomentosa-cultures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/71305.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">182</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">130</span> Biosynthesis of Natural and Halogenated Plant Alkaloids in Yeast</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Beata%20J.%20Lehka">Beata J. Lehka</a>, <a href="https://publications.waset.org/abstracts/search?q=Samuel%20A.%20Bradley"> Samuel A. Bradley</a>, <a href="https://publications.waset.org/abstracts/search?q=Frederik%20G.%20Hansson"> Frederik G. Hansson</a>, <a href="https://publications.waset.org/abstracts/search?q=Khem%20B.%20Adhikari"> Khem B. Adhikari</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniela%20Rago"> Daniela Rago</a>, <a href="https://publications.waset.org/abstracts/search?q=Paulina%20Rubaszka"> Paulina Rubaszka</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20K.%20Haidar"> Ahmad K. Haidar</a>, <a href="https://publications.waset.org/abstracts/search?q=Ling%20Chen"> Ling Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Lea%20G.%20Hansen"> Lea G. Hansen</a>, <a href="https://publications.waset.org/abstracts/search?q=Olga%20Gudich"> Olga Gudich</a>, <a href="https://publications.waset.org/abstracts/search?q=Konstantina%20Giannakou"> Konstantina Giannakou</a>, <a href="https://publications.waset.org/abstracts/search?q=Yoko%20Nakamura"> Yoko Nakamura</a>, <a href="https://publications.waset.org/abstracts/search?q=Thomas%20Dug%C3%A9%20de%20Bernonville"> Thomas Dugé de Bernonville</a>, <a href="https://publications.waset.org/abstracts/search?q=Konstantinos%20Koudounas"> Konstantinos Koudounas</a>, <a href="https://publications.waset.org/abstracts/search?q=Sarah%20E.%20O%E2%80%99Connor"> Sarah E. O’Connor</a>, <a href="https://publications.waset.org/abstracts/search?q=Vincent%20Courdavault"> Vincent Courdavault</a>, <a href="https://publications.waset.org/abstracts/search?q=Jay%20D.%20Keasling"> Jay D. Keasling</a>, <a href="https://publications.waset.org/abstracts/search?q=Jie%20Zhang"> Jie Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20K.%20Jensen"> Michael K. Jensen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Monoterpenoid indole alkaloids (MIAs) represent a large class of natural plant products with marketed pharmaceutical activities against a wide range of applications, including cancer and mental disorders. Halogenated MIAs have shown improved pharmaceutical properties; however, characterisation and synthesis of new-to-nature halogenated MIAs remain a challenge in slow-growing plants with limited genetic tractability. Here, we demonstrate a platform for de novo biosynthesis of two bioactive MIAs, serpentine and alstonine, in baker’s yeast Saccharomyces cerevisiae, reaching titers of 8.85 mg/L and 4.48 mg/L, respectively, when cultivated in fed-batch micro bioreactors. Using this MIA biosynthesis platform, we undertake a systematic exploration of the derivative space surrounding these compounds and produce halogenated MIAs. The aim of the current study is to develop a fermentation process for halogenated MIAs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=monoterpenoid%20indole%20alkaloids" title="monoterpenoid indole alkaloids">monoterpenoid indole alkaloids</a>, <a href="https://publications.waset.org/abstracts/search?q=Saccharomyces%20cerevisiae" title=" Saccharomyces cerevisiae"> Saccharomyces cerevisiae</a>, <a href="https://publications.waset.org/abstracts/search?q=halogenated%20derivatives" title=" halogenated derivatives"> halogenated derivatives</a>, <a href="https://publications.waset.org/abstracts/search?q=fermentation" title=" fermentation"> fermentation</a> </p> <a href="https://publications.waset.org/abstracts/150245/biosynthesis-of-natural-and-halogenated-plant-alkaloids-in-yeast" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/150245.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">210</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">129</span> Usy-Cui Zeolite: An Efficient and Reusable Catalyst for Derivatives Indole Synthesis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hassina%20Harkat">Hassina Harkat</a>, <a href="https://publications.waset.org/abstracts/search?q=Samiha%20Taybe"> Samiha Taybe</a>, <a href="https://publications.waset.org/abstracts/search?q=Salima%20Loucif"> Salima Loucif</a>, <a href="https://publications.waset.org/abstracts/search?q=Val%C3%A9rie%20Beneteau"> Valérie Beneteau</a>, <a href="https://publications.waset.org/abstracts/search?q=Patrick%20Pale"> Patrick Pale </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Indole and its derivatives have attracted great interest because of their importance in the synthetic organic and medicinal chemistry. They are widely used as anti hypertension, anti tubercular, anticancer activity, antiviral, Alzheimer's disease, antioxidant properties, and free radical induced lipid peroxidation. Many drugs and natural products contain indole moiety, such as the vinca alkaloids, fungal metabolites and marine natural products. Generally applicable synthetic methods for indole moiety involve ring closure to form the pyrrole. Indole derivatives can also be accessed by further functionalization of the indole nucleus. Therefore we report a mild and efficient protocol for the synthesis of analogues of indole catalyzed via zeolithe USY doped with CuI under solvent-free conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=indole" title="indole">indole</a>, <a href="https://publications.waset.org/abstracts/search?q=zeolithe" title=" zeolithe"> zeolithe</a>, <a href="https://publications.waset.org/abstracts/search?q=USY-CuI" title=" USY-CuI"> USY-CuI</a>, <a href="https://publications.waset.org/abstracts/search?q=heterogeneous%20catalysis" title=" heterogeneous catalysis"> heterogeneous catalysis</a> </p> <a href="https://publications.waset.org/abstracts/16537/usy-cui-zeolite-an-efficient-and-reusable-catalyst-for-derivatives-indole-synthesis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16537.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">586</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">128</span> Characterization of Monoclonal Antibodies Specific for Synthetic Cannabinoids</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hiroshi%20Nakayama">Hiroshi Nakayama</a>, <a href="https://publications.waset.org/abstracts/search?q=Yuji%20Ito"> Yuji Ito</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Synthetic cannabinoids have attracted much public attention recently in Japan. 1-pentyl-3-(1-naphthoyl)-indole (JWH-018), 1-pentyl-2-methyl-3-(1-naphthoyl) indole (JWH-015), 1-(5-fluoropentyl)-3- (1-(2,2,3,3- tetramethylcyclopropyl)) indole (XLR-11) and 1-methyl-3- (1-admantyl) indole (JWH-018 adamantyl analog) are known as synthetic cannabinoids and are also considered dangerous illegal drugs in Japan. It has become necessary to develop sensitive and useful methods for detection of synthetic cannabinoids. We produced two monoclonal antibodies (MAb) against synthetic cannabinoids, named NT1 (IgG1) and NT2 (IgG1), using Hybridoma technology. The cross-reactivity of these produced MAbs was evaluated using a competitive enzyme-linked immunosorbent assay (ELISA). In the results, we found both of these antibodies recognize many kinds of synthetic cannabinoids analog. However, neither of these antibodies recognizes naphtoic acid, 1-methyl-indole and indole known as a raw material of synthetic cannabinoid. Thus, the MAbs produced in this study could be a useful tool for the detection of synthetic cannabinoids. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ELISA" title="ELISA">ELISA</a>, <a href="https://publications.waset.org/abstracts/search?q=monoclonal%20antibody" title=" monoclonal antibody"> monoclonal antibody</a>, <a href="https://publications.waset.org/abstracts/search?q=sensor" title=" sensor"> sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=synthetic%20cannabinoid" title=" synthetic cannabinoid"> synthetic cannabinoid</a> </p> <a href="https://publications.waset.org/abstracts/51072/characterization-of-monoclonal-antibodies-specific-for-synthetic-cannabinoids" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51072.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">355</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">127</span> Ag (I) Catalyzed Domino Carbonyl and Alkyne Activation: A Smooth Entry to 2, 2′-Di-Substituted 3, 3′-Bisindolylarylmethanes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Swastik%20Karmakar">Swastik Karmakar</a>, <a href="https://publications.waset.org/abstracts/search?q=Prasanta%20Das"> Prasanta Das</a>, <a href="https://publications.waset.org/abstracts/search?q=Shital%20K.%20Chattopadhyay"> Shital K. Chattopadhyay</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An eﬃcient synthesis of symmetrical 2, 2′-Di-substituted 3, 3′-bisindolylarylmethanes (BIAMs) having different aryl and hetero-aryl moieties has been developed by Ag(I)-catalyzed indolyzation and a sequential deoxygenative addition involving o-alkynylanilines and aryl/hetero-aryl aldehydes as substrates. Alkyne and carbonyl units could be activated by Ag (I) simultaneously which results in a domino 5-endo-dig indole annulation, addition of C3 of this indole nucleus to the carbonyl carbon in addition to second indole annulation, and its dehydroxylative addition to the same carbonyl carbon to furnish BIAMs in excellent yield. As 3, 3′-bisindolylmethanes (BIMs) are biologically significant scaﬀolds, this moiety with further substitutions at the indole core could ﬁnd some important use in medicinal chemistry. The methodology developed is atom-economic and involves more accessible silver salts, which could be useful for large-scale synthesis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alkyne" title="alkyne">alkyne</a>, <a href="https://publications.waset.org/abstracts/search?q=3" title=" 3"> 3</a>, <a href="https://publications.waset.org/abstracts/search?q=3%E2%80%B2-Bisindolylarylmethanes" title=" 3′-Bisindolylarylmethanes"> 3′-Bisindolylarylmethanes</a>, <a href="https://publications.waset.org/abstracts/search?q=carbonyl" title=" carbonyl"> carbonyl</a>, <a href="https://publications.waset.org/abstracts/search?q=domino" title=" domino"> domino</a>, <a href="https://publications.waset.org/abstracts/search?q=5-endo-dig%20indole%20annulation" title=" 5-endo-dig indole annulation"> 5-endo-dig indole annulation</a>, <a href="https://publications.waset.org/abstracts/search?q=silver%20catalyst" title=" silver catalyst"> silver catalyst</a> </p> <a href="https://publications.waset.org/abstracts/63170/ag-i-catalyzed-domino-carbonyl-and-alkyne-activation-a-smooth-entry-to-2-2-di-substituted-3-3-bisindolylarylmethanes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63170.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">209</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">126</span> Green, Smooth and Easy Electrochemical Synthesis of N-Protected Indole Derivatives</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sarah%20Fahad%20Alajmi">Sarah Fahad Alajmi</a>, <a href="https://publications.waset.org/abstracts/search?q=Tamer%20Ezzat%20Youssef"> Tamer Ezzat Youssef</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Here, we report a simple method for the direct conversion of 6-Nitro-1H-indole into <em>N</em>-substituted indoles via electrochemical dehydrogenative reaction with halogenated reagents under strongly basic conditions through N–R bond formation. The <em>N</em>-protected indoles have been prepared under moderate and scalable electrolytic conditions. The conduct of the reactions was performed in a simple divided cell under constant current without oxidizing reagents or transition-metal catalysts. The synthesized products have been characterized via UV/Vis spectrophotometry, 1H-NMR, and FTIR spectroscopy. A possible reaction mechanism is discussed based on the <em>N</em>-protective products. This methodology could be applied to the synthesis of various biologically active <em>N</em>-substituted indole derivatives. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=green%20chemistry" title="green chemistry">green chemistry</a>, <a href="https://publications.waset.org/abstracts/search?q=1H-indole" title=" 1H-indole"> 1H-indole</a>, <a href="https://publications.waset.org/abstracts/search?q=heteroaromatic" title=" heteroaromatic"> heteroaromatic</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20electrosynthesis" title=" organic electrosynthesis"> organic electrosynthesis</a> </p> <a href="https://publications.waset.org/abstracts/129536/green-smooth-and-easy-electrochemical-synthesis-of-n-protected-indole-derivatives" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/129536.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">161</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">125</span> Synthesis and Evaluation of Antioxidant Behavior of Some Indole-Based Melatonin Derivatives</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eddy%20Neuhaus">Eddy Neuhaus</a>, <a href="https://publications.waset.org/abstracts/search?q=Hanif%20Shirinzadeh"> Hanif Shirinzadeh</a>, <a href="https://publications.waset.org/abstracts/search?q=Cigdem%20Karaaslan"> Cigdem Karaaslan</a>, <a href="https://publications.waset.org/abstracts/search?q=Elif%20Ince"> Elif Ince</a>, <a href="https://publications.waset.org/abstracts/search?q=Hande%20Gurer-Orhan"> Hande Gurer-Orhan</a>, <a href="https://publications.waset.org/abstracts/search?q=Sibel%20Suzen"> Sibel Suzen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Reactive oxygen species (ROS) and oxidative stress can cause fatal damage to essential cell structures, including DNA. It is known that use of antioxidants could be advantageous in the prevention of various diseases such as cancer, cardiovascular diseases and neurodegenerative disorders. Since antioxidant properties of the indole ring-containing melatonin (MLT) has been described and evaluated, MLT-related compounds such as MLT metabolites and synthetic analogues are under investigation to determine which exhibit the highest activity with the lowest side-effects. Owing to indole and hydrazones appealing physiological properties and are mostly found in numerous biologically active compounds a series of indole-7-carbaldehyde hydrazone derivatives were synthesized, characterized and in vitro antioxidant activity was investigated by evaluating their reducing effect against oxidation of a redox-sensitive fluorescent probe. Cytotoxicity potential of all indole-based MLT analogues was investigated both by lactate dehydrogenase leakage assay and by MTT assay. This work was supported by The Scientific and Technological Research Council of Turkey (TÜBİTAK) Research and Development Grant 112S599. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=melatonin" title="melatonin">melatonin</a>, <a href="https://publications.waset.org/abstracts/search?q=antioxidant%20activity" title=" antioxidant activity"> antioxidant activity</a>, <a href="https://publications.waset.org/abstracts/search?q=indole" title=" indole"> indole</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrazone" title=" hydrazone"> hydrazone</a>, <a href="https://publications.waset.org/abstracts/search?q=oxidative%20stress" title=" oxidative stress"> oxidative stress</a> </p> <a href="https://publications.waset.org/abstracts/19943/synthesis-and-evaluation-of-antioxidant-behavior-of-some-indole-based-melatonin-derivatives" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19943.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">484</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">124</span> Rauvolfine B Isolated from the Bark of Rauvolfia reflexa (Apocynaceae) Induces Apoptosis through Activation of Caspase-9 Coupled with S Phase Cell Cycle Arrest</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mehran%20Fadaeinasab">Mehran Fadaeinasab</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Karimian"> Hamed Karimian</a>, <a href="https://publications.waset.org/abstracts/search?q=Najihah%20Mohd%20Hashim"> Najihah Mohd Hashim</a>, <a href="https://publications.waset.org/abstracts/search?q=Hapipah%20Mohd%20Ali"> Hapipah Mohd Ali </a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, three indole alkaloids namely; rauvolfine B, macusine B, and isoreserpiline have been isolated from the dichloromethane crude extract of Rauvolfia reflexa bark (Apocynaceae). The structural elucidation of the isolated compounds has been performed using spectral methods such as UV, IR, MS, 1D, and 2D NMR. Rauvolfine B showed anti proliferation activity on HCT-116 cancer cell line, its cytotoxicity induction was observed using MTT assay in eight different cell lines. Annexin-V is serving as a marker for apoptotic cells and the Annexin-V-FITC assay was carried out to observe the detection of cell-surface Phosphatidylserine (PS). Apoptosis was confirmed by using caspase-8 and -9 assays. Cell cycle arrest was also investigated using flowcytometric analysis. rauvolfine B had exhibited significantly higher cytotoxicity against HCT-116 cell line. The treatment significantly arrested HCT-116 cells in the S phase. Together, the results presented in this study demonstrated that rauvolfine B inhibited the proliferation of HCT-116 cells and programmed cell death followed by cell cycle arrest. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=apocynacea" title="apocynacea">apocynacea</a>, <a href="https://publications.waset.org/abstracts/search?q=indole%20alkaloid" title=" indole alkaloid"> indole alkaloid</a>, <a href="https://publications.waset.org/abstracts/search?q=apoptosis" title=" apoptosis"> apoptosis</a>, <a href="https://publications.waset.org/abstracts/search?q=cell%20cycle%20arrest" title=" cell cycle arrest"> cell cycle arrest</a> </p> <a href="https://publications.waset.org/abstracts/13403/rauvolfine-b-isolated-from-the-bark-of-rauvolfia-reflexa-apocynaceae-induces-apoptosis-through-activation-of-caspase-9-coupled-with-s-phase-cell-cycle-arrest" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13403.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">334</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">123</span> Synthesis and Pharmacological Activity of Some Oxyindole Derivatives</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vivek%20Singh%20Bhadauria">Vivek Singh Bhadauria</a>, <a href="https://publications.waset.org/abstracts/search?q=Abhishek%20Pandey"> Abhishek Pandey</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Indole-2,3-diones are known for their various biological activities. By suitable control of a substituent, different novel indole-2,3-diones were synthesized. In this present study, various Schiff and Mannich bases were synthesized and characterized, and evaluated their for different pharmacological activities. The compounds were prepared by reacting indole-2,3-dione with benzyl chloride and 4-substituted thiosemicarbazides. All the synthesized compounds were characterized by the TLC, MP, Elemental analysis, FTIR, 1H-NMR and Mass spectroscopy. The compounds have been evaluated for their anticancer, antituberculosis, anticonvulsant, antiinflammatory as well as anti-SARS activity and the results are presented. Some of compounds possessed different pharmacological activity at a concentration of 200 mg/kg body weight and even at lower concentration. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=indoles" title="indoles">indoles</a>, <a href="https://publications.waset.org/abstracts/search?q=isatin" title=" isatin"> isatin</a>, <a href="https://publications.waset.org/abstracts/search?q=NMR" title=" NMR"> NMR</a>, <a href="https://publications.waset.org/abstracts/search?q=biological%20activities" title=" biological activities"> biological activities</a> </p> <a href="https://publications.waset.org/abstracts/2954/synthesis-and-pharmacological-activity-of-some-oxyindole-derivatives" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2954.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">355</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">122</span> Attempts for the Synthesis of Indol-Ring Fluorinated Tryptophan Derivatives to Enhance the Activity of Antimicrobial Peptides</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Anita%20K.%20Kovacs">Anita K. Kovacs</a>, <a href="https://publications.waset.org/abstracts/search?q=Peter%20Hegyes"> Peter Hegyes</a>, <a href="https://publications.waset.org/abstracts/search?q=Zsolt%20Bozso"> Zsolt Bozso</a>, <a href="https://publications.waset.org/abstracts/search?q=Gabor%20Toth"> Gabor Toth</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fluorination has been used extensively by the pharmaceutical industry as a strategy to improve the pharmacokinetics of drugs due to its effectiveness in increasing the potency of antimicrobial peptides (AMPs). Multiple-fluorinated indole-ring-containing tryptophan derivatives have the potential of having better antimicrobial activity than the widely used mono-fluorinated indole-ring containing tryptophan derivatives, but they are not available commercially. Therefore, our goal is to synthesize multiple-fluorinated indole-ring containing tryptophan derivatives to incorporate them into AMPs to enhance their antimicrobial activity. During our work, we are trying several methods (classical organic synthesis, enzymic synthesis, and solid phase peptide synthesis) for the synthesis of the said compounds, with mixed results. With classical organic synthesis (four different routes), we did not get the desired results. The reaction of serin with substituted indole in the presence of acetic anhydride led to racemic tryptophane; with the reaction of protected serin with indole in the presence of nickel complex was unsuccessful; the reaction of serin containing protected dipeptide with disuccinimidyl carbonate we achieved a tryptophane containing dipeptide, its chiral purity is being examined; the reaction of alcohol with substituted indole in the presence of copper complex was successful, but it was only a test reaction, we could not reproduce the same result with serine. The undergoing tryptophan-synthase method has shown some potential, but our work has not been finished yet. The successful synthesis of the desired multiple-fluorinated indole-ring-containing tryptophan will be followed by solid phase peptide synthesis in order to incorporate it into AMPs to enhance their antimicrobial activity. The successful completion of these phases will mean the possibility of manufacturing new, effective AMPs. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=halogenation" title="halogenation">halogenation</a>, <a href="https://publications.waset.org/abstracts/search?q=fluorination" title=" fluorination"> fluorination</a>, <a href="https://publications.waset.org/abstracts/search?q=tryptophan" title=" tryptophan"> tryptophan</a>, <a href="https://publications.waset.org/abstracts/search?q=enhancement%20of%20antimicrobial%20activity" title=" enhancement of antimicrobial activity"> enhancement of antimicrobial activity</a> </p> <a href="https://publications.waset.org/abstracts/152468/attempts-for-the-synthesis-of-indol-ring-fluorinated-tryptophan-derivatives-to-enhance-the-activity-of-antimicrobial-peptides" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/152468.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">97</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">121</span> Cholinesterase Inhibitory Indole Alkaloids from the Bark of Rauvolfia reflexa</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mehran%20Fadaeinasab">Mehran Fadaeinasab</a>, <a href="https://publications.waset.org/abstracts/search?q=Alireza%20Basiri"> Alireza Basiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Yalda%20Kia"> Yalda Kia</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamed%20Karimian"> Hamed Karimian</a>, <a href="https://publications.waset.org/abstracts/search?q=Hapipah%20Mohd%20Ali"> Hapipah Mohd Ali</a>, <a href="https://publications.waset.org/abstracts/search?q=Vikneswaran%20Murugaiyah"> Vikneswaran Murugaiyah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Two new, rauvolfine C and 3- methyl-10,11-dimethoxyl-6- methoxycarbonyl- β- carboline, along with five known indole alkaloids, macusine B, vinorine, undulifoline, isoresrpiline and rescinnamine were isolated from the bark of Rauvolfia reflexa. All the compounds showed good to moderate cholinesterase inhibitory activity with IC50 values in the range of 8.06 to 73.23 πM, except rauvolfine C that was inactive against acetylcholinesterase (AChE). Rescinnamine, a dual inhibitor was found to be the most potent inhibitor among the isolated alkaloids against both AChE and butyrylcholinesterase (BChE). Molecular docking revealed that rescinnamine interacted differently on AChE and BChE, by means of hydrophobic interactions and hydrogen bonding. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rauvolfia%20reflexa" title="Rauvolfia reflexa">Rauvolfia reflexa</a>, <a href="https://publications.waset.org/abstracts/search?q=indole%20alkaloids" title=" indole alkaloids"> indole alkaloids</a>, <a href="https://publications.waset.org/abstracts/search?q=acetylcholinesterase" title=" acetylcholinesterase"> acetylcholinesterase</a>, <a href="https://publications.waset.org/abstracts/search?q=butyrylcholinesterase" title=" butyrylcholinesterase"> butyrylcholinesterase</a>, <a href="https://publications.waset.org/abstracts/search?q=molecular%20docking" title=" molecular docking"> molecular docking</a> </p> <a href="https://publications.waset.org/abstracts/30034/cholinesterase-inhibitory-indole-alkaloids-from-the-bark-of-rauvolfia-reflexa" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30034.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">592</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">120</span> Somatic Embryogenesis Derived from Protoplast of Murraya Paniculata L. Jack and Their Regeneration into Plant Flowering in vitro</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hasan%20Basri%20Jumin">Hasan Basri Jumin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The in vitro flowering of orange jessamine plantlets derived from protoplast was affected by the manipulation of plant growth regulators, sugar and light conditions. MT basal medium containing 5% sucrose and supplemented with 0.001 mg 1-1 indole-acetic-acid was found to be a suitable medium for development of globular somatic embryos derived from protoplasts to form heart-shaped somatic embryos with cotyledon-like structures. The highest percentage (85 %) of flowering was achieved with plantlet on half-strength MT basal medium containing 5% sucrose and 0.001 mg1-1 indole-acetic-acid in light. Exposure to darkness for more than 3 weeks followed by re-exposure to light reduced flowering. Flowering required a 10-day exposure to indole-acetic-acid. Photoperiod with 18 h and 79.4 µmol m-2 s-1 light intensity promoted in vitro flowering in high frequencies. The sucrose treatment affected the flower bud size distribution. Flower buds originating from plantlet derived from protoplasts developed into normal flowers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=indole-acetc-acid" title="indole-acetc-acid">indole-acetc-acid</a>, <a href="https://publications.waset.org/abstracts/search?q=light-intensity" title=" light-intensity"> light-intensity</a>, <a href="https://publications.waset.org/abstracts/search?q=Murraya-paniculata" title=" Murraya-paniculata"> Murraya-paniculata</a>, <a href="https://publications.waset.org/abstracts/search?q=photoperiod" title=" photoperiod"> photoperiod</a>, <a href="https://publications.waset.org/abstracts/search?q=plantlet" title=" plantlet"> plantlet</a>, <a href="https://publications.waset.org/abstracts/search?q=Zeatin" title=" Zeatin"> Zeatin</a> </p> <a href="https://publications.waset.org/abstracts/28393/somatic-embryogenesis-derived-from-protoplast-of-murraya-paniculata-l-jack-and-their-regeneration-into-plant-flowering-in-vitro" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28393.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">418</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">119</span> Silica Sulfuric Acid as an Efficient Catalyst One-Pot Three-Component Aza-Friedel-Crafts Reactions of 2-(thiophen-2-yl)-1H-Indole, Aldehydes, and N-Substituted Anilines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nagwa%20Mourad%20Abdelazeem">Nagwa Mourad Abdelazeem</a>, <a href="https://publications.waset.org/abstracts/search?q=Marwa%20El-hussieny"> Marwa El-hussieny</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Multicomponent reactions (MCRs), one-pot reactions form products from more than two different starting compounds. (MCRs) are ideal reaction systems leading to high structural diversity and molecular complexity through a single transformation. (MCRs) have a lot of advantage such as higher yield, less waste generation, use of readily available starting materials and high atom. (MCRs) provide a rapid process for efficient synthesis of key structures in discovery of drug on the other hand silica sulfuric acid (SSA) has been used as an efficient heterogeneous catalyst for many organic transformations. (SSA) is low cost, ease of preparation, catalyst recycling, and ease of handling, so in this article we used 2-(thiophen-2-yl)-1H-indole, N-substituted anilines and aldehyde in the presence of silica sulfuric acid (SSA) as a catalyst in water as solvent at room temperature to prepare 3,3'-(phenylmethylene)bis(2-(thiophen-2-yl)-1H-indole) and N-methyl-4-(phenyl(2-(thiophen-2-yl)-1H-indol-3-yl)methyl)aniline derivatives Via one-pot reaction. Compound 2-(thiophen-2-yl)-1H-indole belongs to the ubiquitous class of indoles which enjoy broad synthetic, biological and industrial applications ]. Cancer is considered the first or second most common reason of death all through the world. So the synthesized compounds will be tested as anticancer. We expected the synthesized compounds will give good results comparison to the reference drug. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aldehydes" title="aldehydes">aldehydes</a>, <a href="https://publications.waset.org/abstracts/search?q=aza-friedel-crafts%20reaction" title=" aza-friedel-crafts reaction"> aza-friedel-crafts reaction</a>, <a href="https://publications.waset.org/abstracts/search?q=indole" title=" indole"> indole</a>, <a href="https://publications.waset.org/abstracts/search?q=multicomponent%20reaction" title=" multicomponent reaction"> multicomponent reaction</a> </p> <a href="https://publications.waset.org/abstracts/158238/silica-sulfuric-acid-as-an-efficient-catalyst-one-pot-three-component-aza-friedel-crafts-reactions-of-2-thiophen-2-yl-1h-indole-aldehydes-and-n-substituted-anilines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/158238.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">97</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">118</span> Versatile Variation of Fischer Indolization in Green Synthesis of Nitro Substituted Tetrahydrocarbazole</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zubi%20Sadiq">Zubi Sadiq</a>, <a href="https://publications.waset.org/abstracts/search?q=Ghazala%20Yaqub"> Ghazala Yaqub</a>, <a href="https://publications.waset.org/abstracts/search?q=Almas%20Hamid"> Almas Hamid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We wish to report herein a very stimulating variation in Fischer indole reaction by adopting solvent and catalyst free conditions. A concise synthesis of dinitro tetrahydrocarbazole derivative 3 was introduced without the use of any accelerating agent at ambient temperature with fairly good yield. Product was fully corroborated by UV, FTIR, 1H NMR, 13C NMR, MS, and CHN analysis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fischer%20indole%20reaction" title="fischer indole reaction">fischer indole reaction</a>, <a href="https://publications.waset.org/abstracts/search?q=neutral%20medium" title=" neutral medium"> neutral medium</a>, <a href="https://publications.waset.org/abstracts/search?q=solvent%20free%20synthesis" title=" solvent free synthesis"> solvent free synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=tetrahydrocarbazole" title=" tetrahydrocarbazole"> tetrahydrocarbazole</a> </p> <a href="https://publications.waset.org/abstracts/11748/versatile-variation-of-fischer-indolization-in-green-synthesis-of-nitro-substituted-tetrahydrocarbazole" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11748.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">359</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">117</span> Effects of Indole on Aerobic Biodegradation of Butanoic Acid by Pseudomonas aeruginosa and Serratia marcescens</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=J.%20B.%20J.%20Njalam%E2%80%99mano">J. B. J. Njalam’mano</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20M.%20N.%20Chirwa"> E. M. N. Chirwa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In low resource settings in Africa and other developing regions, pit latrines remain the dominant basic minimum acceptable form of sanitation. However, unpleasant smells-malodours emitted from faecal sludge in the pit latrines, which elicit disgusting or repulsive response, are one of the factors that thwart people to use latrines and instead opt for open defecation as an alternative. This provides an important but often overlooked major impediment, dissuading people from adopting and using the pit latrines hence affecting successful, effective sanitation promotion. The malodours are primarily attributed to four odorants: butanoic acid (C₄H₈O₂), dimethyl trisulphide (C₂H₆S₃), indole (C₈H₇N) and para-cresol (C₇H₈O). Several pit latrine deodorisation methods such as addition of carbonous materials, use of ventilation systems and urine separation are available, and they continue to occupy their niche, but social, economic, environmental and technological shortfalls remain. Bioremediation has been gaining popularity because it is inexpensive, simple to operate and environmentally friendly. Recently, the biodegradation of butanoic acid as individual odorant has been studied. However, to the best of our knowledge, there have been no kinetic studies of the butanoic acid in the presence of other key odorous compounds. In this study, a series of experiments were conducted to investigate the effects of indole on the removal of butanoic acid under aerobic conditions using indigenous bacteria strains, Pseudomonas aeruginosa, and Serratia marcescens isolated from faecal sludge as pure cultures as well as mixed cultures. In this purpose, butanoic acid removal was performed in a batch reactor containing the bacterial strains in mineral salt medium (MSM) amended with 3000 ppm of butanoic acid at the temperature of 30°C, under continuous stirring rate of 150 rpm and the concentration of indole was varied from 50-200 ppm. The initial pH of the solution was in the range of 6.0-7.2. Overall, there were significant differences in the bacterial growth rate and total butanoic acid removal dependent on the concentration of indole in the solution. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biodegradation" title="biodegradation">biodegradation</a>, <a href="https://publications.waset.org/abstracts/search?q=butanoic%20acid" title=" butanoic acid"> butanoic acid</a>, <a href="https://publications.waset.org/abstracts/search?q=indole" title=" indole"> indole</a>, <a href="https://publications.waset.org/abstracts/search?q=pit%20latrine" title=" pit latrine"> pit latrine</a> </p> <a href="https://publications.waset.org/abstracts/73333/effects-of-indole-on-aerobic-biodegradation-of-butanoic-acid-by-pseudomonas-aeruginosa-and-serratia-marcescens" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/73333.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">195</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">116</span> Preparation and Antioxidant Activity of Heterocyclic Indole Derivatives</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tunca%20Gul%20Altuntas">Tunca Gul Altuntas</a>, <a href="https://publications.waset.org/abstracts/search?q=Aziz%20Baydar"> Aziz Baydar</a>, <a href="https://publications.waset.org/abstracts/search?q=Cemre%20Acar"> Cemre Acar</a>, <a href="https://publications.waset.org/abstracts/search?q=Sezen%20Y%C4%B1lmaz"> Sezen Yılmaz</a>, <a href="https://publications.waset.org/abstracts/search?q=Tulay%20Coban"> Tulay Coban</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Free radicals, which are generated in many bioorganic redox processes, play a role in the pathogenesis of several diseases including cancer, arthritis, hemorrhagic shock, inflammatory, cardiovascular, neurodegenerative diseases and age-related degenerative brain diseases. Exposures of normal cell to free radical damages several structures, oxidizes nucleic acids, proteins, lipids, or DNA. Compounds interfere with the action of reactive oxygen species might be useful in prevention and treatment of these pathologies. A series of indole compounds containing piperazine ring were synthesized. Coupling of indole-2-carboxylic acid with monosubstituted piperazines was accomplished with 1,1’-carbonyldiimidazole (CDI) in a good yield. The structures of prepared compounds were verified in good agreement with their 1H NMR (nuclear magnetic resonance), MS (mass spectrophotometry), and IR (infrared spectrophotometry) characteristics. In this work, all synthetized indole derivatives were screened in vitro for their antioxidative potential against vitamin E (α-tocopherol) using different antioxidant assays such as superoxide anion formation, lipid peroxidation levels in rat liver, and 2,2-diphenyl-1-picrylhydrazyl (DPPH) stable radical scavenging activity. The synthesized compounds showed various levels of inhibition compared to vitamin E. This may give promising results for the development of new antioxidant agents. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antioxidant" title="antioxidant">antioxidant</a>, <a href="https://publications.waset.org/abstracts/search?q=indoles" title=" indoles"> indoles</a>, <a href="https://publications.waset.org/abstracts/search?q=piperazines" title=" piperazines"> piperazines</a>, <a href="https://publications.waset.org/abstracts/search?q=reactive%20oxygen%20species" title=" reactive oxygen species"> reactive oxygen species</a> </p> <a href="https://publications.waset.org/abstracts/91784/preparation-and-antioxidant-activity-of-heterocyclic-indole-derivatives" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/91784.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">231</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">115</span> The Effects of Zinc Oxide Nanoparticles Loaded with Indole-3-Acetic Acid and Indole-3-Butyric Acid on in vitro Rooting of Apple Microcuttings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shabnam%20Alizadeh">Shabnam Alizadeh</a>, <a href="https://publications.waset.org/abstracts/search?q=Hatice%20Dumanoglu"> Hatice Dumanoglu </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Plant tissue culture is a substantial plant propagation technique for mass clonal production throughout the year, regardless of time in fruit species. However, the rooting achievement must be enhanced in the difficult-to-root genotypes. Classical auxin applications in clonal propagation of these genotypes are inadequate to solve the rooting problem. Nanoparticles having different physical and chemical properties from bulk material could enhance the rooting success of controlled release of these substances when loaded with auxin due to their ability to reach the active substance up to the target cells as a carrier system.The purpose of this study is to investigate the effects of zinc oxide nanoparticles loaded with indole-3-acetic acid (IAA-nZnO) and indole-3-butyric acid (IBA-nZnO) on in vitro rooting of microcuttings in a difficult-to-root apple genotype (Malus domestica Borkh.). Rooting treatments consisted of IBA or IAA at concentrations of 0.5, 1.0, 2.0, 3.0 mg/L; nZnO, IAA-nZnO and IBA-nZnO at doses of 0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 mg/L were used. All components were added to the Murashige and Skoog (MS) basal medium at strength ½ with 2% sucrose and 0.7% agar before autoclaving. In the study, no rooting occurred in control and nZnO applications. Especially, 1.0 mg/L and 2.0 mg/L IBA-nZnO nanoparticle applications (containing 0.5 mg/L and 0.9 mg/L IBA), respectively with rooting rates of 40.3% and 70.4%, rooting levels of 2.0±0.4 and 2.3±0.4, 2.6±0.7 and 2.5±0.6 average root numbers and 20.4±1.6 mm and 20.2±3.4 mm average root lengths put forward as effective applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Auxin" title="Auxin">Auxin</a>, <a href="https://publications.waset.org/abstracts/search?q=Malus" title=" Malus"> Malus</a>, <a href="https://publications.waset.org/abstracts/search?q=nanotechnology" title=" nanotechnology"> nanotechnology</a>, <a href="https://publications.waset.org/abstracts/search?q=zinc%20oxide%20nanoparticles" title=" zinc oxide nanoparticles"> zinc oxide nanoparticles</a> </p> <a href="https://publications.waset.org/abstracts/124807/the-effects-of-zinc-oxide-nanoparticles-loaded-with-indole-3-acetic-acid-and-indole-3-butyric-acid-on-in-vitro-rooting-of-apple-microcuttings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/124807.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">144</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">114</span> Analysis of the Transcriptional Response of Rhazia stricta to Jasmonic Acid Induction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nahid%20H.%20Hajrah">Nahid H. Hajrah</a>, <a href="https://publications.waset.org/abstracts/search?q=Jamal%20S.%20M.%20Sabir"> Jamal S. M. Sabir</a>, <a href="https://publications.waset.org/abstracts/search?q=Neil%20Hall"> Neil Hall</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The jasmonic pathway is ubiquitous in plants and is crucial to plant development. It Is involved in fertility, ripening, and sex determination as well as in response to environmental stresses such as herbivory, pathogen drought or temperature shock. Essentially the jasmonic pathway acts to shut down growth in order to induce defence pathways. These pathways include the production of secondary metabolites which have evolved to defend against herbivores and pathogens but are of increasing interest due to their roll in medicine and biotechnology. Here we describe the transcriptional response of Rhazia stricta (a poisonous shrub widely used in traditional medicine) to jasmonic acid, in order to better characterize the genes involved in secondary metabolite production and its response to stress. We observe coordinated upregulation of flavonoid biosynthesis pathway leading to flavonols, flavones and anthocyanins but no similar coordination of the monoterpene indole alkaloid pathway. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=medicinal%20plants" title="medicinal plants">medicinal plants</a>, <a href="https://publications.waset.org/abstracts/search?q=Rhazia%20stricta" title=" Rhazia stricta"> Rhazia stricta</a>, <a href="https://publications.waset.org/abstracts/search?q=jasmonic%20acid" title=" jasmonic acid"> jasmonic acid</a>, <a href="https://publications.waset.org/abstracts/search?q=transcriptional%20analysis" title=" transcriptional analysis"> transcriptional analysis</a> </p> <a href="https://publications.waset.org/abstracts/107330/analysis-of-the-transcriptional-response-of-rhazia-stricta-to-jasmonic-acid-induction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/107330.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">143</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">113</span> Protoplast Cultures of Murraya paniculata L. Jack and Their Regeneration into Plant Precocious Flowering</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hasan%20Basri%20Jumin">Hasan Basri Jumin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Protoplasts isolated from embryogenic callus of Murraya paniculata (L. Jack.) were cultured in MT (Murashige and Tucker, 1969) basal medium containing 5% sucrose supplemented with kinetin, malt extract (ME) and 0.6 M sorbitol. About 85% of the surviving protoplasts formed a cell wall within 6 d of culture and the first cell division was observed 7 days after isolation. The highest plating effi¬ciency was obtained on MT basal medium containing 5% sucrose supplemented with 0.01 mg 1-1 kinetin 600 mg 1-1 ME, MT basal medium containing 5% sucrose and supplemented with 0.01 mg 1-1 Indole-acetic-acid (IAA) was found to be a medium suitable for the development somatic embryos into heart-shaped somatic embryos. The highest percentage of shoot formation was obtained using 0.1 mg 1-1 Indole-acitic-acid (IAA) 0..1 mg 1-1 gibberellic acid (GA3). In this investigation 40 plants were survived and grew normally in the soil. After two months maitained in the soil plants formed flower and flower developed into fruits on the soil treated with BA. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gibberellic-acid" title="gibberellic-acid">gibberellic-acid</a>, <a href="https://publications.waset.org/abstracts/search?q=indole-acetic-acid" title=" indole-acetic-acid"> indole-acetic-acid</a>, <a href="https://publications.waset.org/abstracts/search?q=protoplast" title=" protoplast"> protoplast</a>, <a href="https://publications.waset.org/abstracts/search?q=precocious-flowering" title=" precocious-flowering"> precocious-flowering</a>, <a href="https://publications.waset.org/abstracts/search?q=somatic-embryo" title=" somatic-embryo"> somatic-embryo</a> </p> <a href="https://publications.waset.org/abstracts/45902/protoplast-cultures-of-murraya-paniculata-l-jack-and-their-regeneration-into-plant-precocious-flowering" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45902.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">345</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">112</span> Indigo Production in a Fed Batch Bioreactor Using Aqueous-Solvent Two Phase System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vaishnavi%20Unde">Vaishnavi Unde</a>, <a href="https://publications.waset.org/abstracts/search?q=Srikanth%20Mutnuri"> Srikanth Mutnuri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Today dye stuff sector is one of the major chemical industries in India. Indigo is a blue coloured dye used all over the world in large quantity. The indigo dye produced and used in textile industries is synthetic having toxic effect, thus there is an increase in interest for natural dyes owing to the environmental concerns. The present study focuses on the use of a strain Pandoraea sp. isolated from garage soil, for the production of indigo in fed batch bioreactor. A comparative study between single phase and two phase production was carried out in this work. The blue colour produced during the experiments was analyzed using, TLC, UV-visible spectrophotometer and FTIR technique. The blue pigment was found to be indigo. The production of bio-indigo was done in a single phase fermentor carrying medium and substrate indole in dissolved form and was found to produce maximum of 0.041 g/L of indigo. Whereas there was an increase in production of indigo to 0.068 g/L in a two phase, water-silicone oil system. In this study the advantage of using second phase as silicone oil has enhanced the indigo production, as the second phase made the substrate available to the bacteria by increasing the surface area as well as it helped to prevent the inhibition effect of the high concentration of substrate, indole. The effect of single and two phases on the growth of bacteria was also studied. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dyes" title="dyes">dyes</a>, <a href="https://publications.waset.org/abstracts/search?q=fed%20batch%20reactor" title=" fed batch reactor"> fed batch reactor</a>, <a href="https://publications.waset.org/abstracts/search?q=indole" title=" indole"> indole</a>, <a href="https://publications.waset.org/abstracts/search?q=Indigo" title=" Indigo "> Indigo </a> </p> <a href="https://publications.waset.org/abstracts/37269/indigo-production-in-a-fed-batch-bioreactor-using-aqueous-solvent-two-phase-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37269.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">433</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">111</span> Identification of Synthetic Hybrids of 4-Thiazolidinone-Bromopyrrole Alkaloid as HIV-1 RT Inhibitors</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rajesh%20A.%20Rane">Rajesh A. Rane</a>, <a href="https://publications.waset.org/abstracts/search?q=Shital%20S.%20Naphade"> Shital S. Naphade</a>, <a href="https://publications.waset.org/abstracts/search?q=Rajshekhar%20Karpoormath"> Rajshekhar Karpoormath</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Thiozolidin-4-one, a mimic of thiazolobenzimidazole (TBZ) has drawn many attentions due to its potent and selective inhibition against the HIV-1 and low toxicity by binding to the allosteric site of the reverse transcriptase (RT) as a non-nucleoside RT inhibitor (NNRTI). Similarly, marine bromopyrrole alkaloids are well known for their diverse array of anti-infective properties. Hence, we have reported synthesis and in vitro HIV-1 RT inhibitory activity of a series of 4-thiazolidinone-bromopyrrole alkaloid hybrids tethered with amide linker. The results of in vitro HIV-1 RT kit assay showed that some of the compounds, such as 4c, 4d, and 4i could effectively inhibit RT activity. Among them, compounds 4c having 4-chlorophenyl substituted 4-thiazolidione ring was the best one with the IC50 value of 0.26 µM. The sturdy emerges with key structure-activity relationship that pyrrole-NH-free core benefited inhibition against HIV-1 RT inhibition. This study identified conjugate 4c with potent activity and selectivity as promising compound for further drug development to HIV. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antiviral%20drugs" title="antiviral drugs">antiviral drugs</a>, <a href="https://publications.waset.org/abstracts/search?q=bromopyrrole%20alkaloids" title=" bromopyrrole alkaloids"> bromopyrrole alkaloids</a>, <a href="https://publications.waset.org/abstracts/search?q=HIV-1%20RT%20inhibition" title=" HIV-1 RT inhibition"> HIV-1 RT inhibition</a>, <a href="https://publications.waset.org/abstracts/search?q=4-thiazolidinone" title=" 4-thiazolidinone"> 4-thiazolidinone</a> </p> <a href="https://publications.waset.org/abstracts/35304/identification-of-synthetic-hybrids-of-4-thiazolidinone-bromopyrrole-alkaloid-as-hiv-1-rt-inhibitors" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35304.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">459</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">110</span> Identification of Tissue-Specific Transcription Factors in C. roseus with Emphasis to the TIA Biosynthetic Pathway</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=F.%20M.%20El-Domyati">F. M. El-Domyati</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Atef"> A. Atef</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Edris"> S. Edris</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20O.%20Gadalla"> N. O. Gadalla</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Al-Kordy"> M. A. Al-Kordy</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20M.%20Ramadan"> A. M. Ramadan</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20M.%20Saad"> Y. M. Saad</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20S.%20Al-Zahrani"> H. S. Al-Zahrani</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Bahieldin"> A. Bahieldin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Transcriptome retrieved from SRA database of different tissues and treatments of C. roseus was assembled in order to detect tissue-specific transcription factors (TFs) and TFs possibly related to terpenoid indole alkaloids (TIA) pathway. A number of 290 TF-like transcripts along with 12 transcripts related to TIA biosynthetic pathway were divided in terms of co-expression in the different tissues, treatments and genotypes. Three transcripts encoding peroxidases 1 and 12 were downregulated in hairy root, while upregulated in mature leaf. Eight different transcripts of the TIA pathway co-expressed with TFs either functioning downstream tryptophan biosynthesis, e.g., tdc, str1 and sgd, or upstream vindoline biosynthesis, e.g., t16h, omt, nmt, d4h and dat. The results showed no differential expression of TF transcripts in hairy roots knocked down for tdc gene (TDCi) as compared to their wild type controls. There were several evidences of tissue-specific expression of TF transcripts in flower, mature leaf, root/hairy root, stem, seedling, hairy root and immature/mature leaves. Regulation included transcription factor families, e.g., bHLH, MYB and WRKY mostly induced by ABA and/or JA (or MeJA) and regulated during abiotic or biotic stress. The information of tissue-specific regulation and co-expression of TFs and genes in the TIA pathway can be utilized in manipulating alkaloid biosynthesis in C. roseus. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=SRA%20database" title="SRA database">SRA database</a>, <a href="https://publications.waset.org/abstracts/search?q=bHLH" title=" bHLH"> bHLH</a>, <a href="https://publications.waset.org/abstracts/search?q=MYB" title=" MYB"> MYB</a>, <a href="https://publications.waset.org/abstracts/search?q=WRKY" title=" WRKY"> WRKY</a>, <a href="https://publications.waset.org/abstracts/search?q=co-expression" title=" co-expression "> co-expression </a> </p> <a href="https://publications.waset.org/abstracts/42512/identification-of-tissue-specific-transcription-factors-in-c-roseus-with-emphasis-to-the-tia-biosynthetic-pathway" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42512.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">420</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">109</span> Direct Palladium-Catalyzed Selective N-Allylation of 2,3-Disubstituted Indoles with Allylic Alcohols in Water</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bai-Jing%20Peng">Bai-Jing Peng</a>, <a href="https://publications.waset.org/abstracts/search?q=Shyh-Chyun%20Yang"> Shyh-Chyun Yang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Organic reactions in water have recently attracted much attention, not only because unique reactivity is often observed in water but also because water is a safe and economical substitute for conventional organic solvents. Thus, development of environmental safe, atom-economical reactions in water is one of the most important goals of synthetic chemistry. The recent paper has documented renewed interest in the use of allylic substrates in the synthesis of new C−C, C−N, and C−O bonds. We have reported our attempts and some successful applications of a process involving the C-O bond cleavage catalyzed by palladium or platinum complexes in water. Because of the importance of heterocycle indole derivatives, much effort has been directed toward the development of methods for functionalization of the indole nucleus at N1 site. In our research, the palladium-catalyzed 2,3-disubstitued indoles with allylic alcohols was investigated under different conditions. Herein, we will establish a simple, convenient, and efficient method, which affords high yields of allylated indoles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=palladium-catalyzed" title="palladium-catalyzed">palladium-catalyzed</a>, <a href="https://publications.waset.org/abstracts/search?q=allylic%20alcohols" title=" allylic alcohols"> allylic alcohols</a>, <a href="https://publications.waset.org/abstracts/search?q=indoles" title=" indoles"> indoles</a>, <a href="https://publications.waset.org/abstracts/search?q=water" title=" water"> water</a>, <a href="https://publications.waset.org/abstracts/search?q=allylation" title=" allylation"> allylation</a> </p> <a href="https://publications.waset.org/abstracts/71957/direct-palladium-catalyzed-selective-n-allylation-of-23-disubstituted-indoles-with-allylic-alcohols-in-water" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/71957.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">238</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">108</span> Biophysical Study of the Interaction of Harmalol with Nucleic Acids of Different Motifs: Spectroscopic and Calorimetric Approaches</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kakali%20Bhadra">Kakali Bhadra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Binding of small molecules to DNA and recently to RNA, continues to attract considerable attention for developing effective therapeutic agents for control of gene expression. This work focuses towards understanding interaction of harmalol, a dihydro beta-carboline alkaloid, with different nucleic acid motifs viz. double stranded CT DNA, single stranded A-form poly(A), double-stranded A-form of poly(C)·poly(G) and clover leaf tRNAphe by different spectroscopic, calorimetric and molecular modeling techniques. Results of this study converge to suggest that (i) binding constant varied in the order of CT DNA > poly(C)·poly(G) > tRNAphe > poly(A), (ii) non-cooperative binding of harmalol to poly(C)·poly(G) and poly(A) and cooperative binding with CT DNA and tRNAphe, (iii) significant structural changes of CT DNA, poly(C)·poly(G) and tRNAphe with concomitant induction of optical activity in the bound achiral alkaloid molecules, while with poly(A) no intrinsic CD perturbation was observed, (iv) the binding was predominantly exothermic, enthalpy driven, entropy favoured with CT DNA and poly(C)·poly(G) while it was entropy driven with tRNAphe and poly(A), (v) a hydrophobic contribution and comparatively large role of non-polyelectrolytic forces to Gibbs energy changes with CT DNA, poly(C)·poly(G) and tRNAphe, and (vi) intercalated state of harmalol with CT DNA and poly(C)·poly(G) structure as revealed from molecular docking and supported by the viscometric data. Furthermore, with competition dialysis assay it was shown that harmalol prefers hetero GC sequences. All these findings unequivocally pointed out that harmalol prefers binding with ds CT DNA followed by ds poly(C)·poly(G), clover leaf tRNAphe and least with ss poly(A). The results highlight the importance of structural elements in these natural beta-carboline alkaloids in stabilizing different DNA and RNA of various motifs for developing nucleic acid based better therapeutic agents. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=calorimetry" title="calorimetry">calorimetry</a>, <a href="https://publications.waset.org/abstracts/search?q=docking" title=" docking"> docking</a>, <a href="https://publications.waset.org/abstracts/search?q=DNA%2FRNA-alkaloid%20interaction" title=" DNA/RNA-alkaloid interaction"> DNA/RNA-alkaloid interaction</a>, <a href="https://publications.waset.org/abstracts/search?q=harmalol" title=" harmalol"> harmalol</a>, <a href="https://publications.waset.org/abstracts/search?q=spectroscopy" title=" spectroscopy"> spectroscopy</a> </p> <a href="https://publications.waset.org/abstracts/55814/biophysical-study-of-the-interaction-of-harmalol-with-nucleic-acids-of-different-motifs-spectroscopic-and-calorimetric-approaches" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/55814.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">228</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">107</span> In vitro and in vivo Antiangiogenic Activity of Girinimbine Isolated from Murraya koenigii</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Venoos%20Iman">Venoos Iman</a>, <a href="https://publications.waset.org/abstracts/search?q=Suzita%20Mohd%20Noor"> Suzita Mohd Noor</a>, <a href="https://publications.waset.org/abstracts/search?q=Syam%20Mohan"> Syam Mohan</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamad%20Ibrahim%20Noordin"> Mohamad Ibrahim Noordin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Girinimbine, a carbazole alkaloid was isolated from the stem bark and root of Murraya koenigii and its structure and purity was identified by HPLC and LC-MS. Here we report that Girinimbine strongly inhibit angiogenesis activity both in vitro and in vivo. MTT result showed that girinimbine inhibits cell proliferation of the HUVECS cell line in vitro. Result of endothelial cell invasion, migration, tube formation and wound healing assays also demonstrated significant time and does dependent inhibition by girinimbine. Moreover, girinibine mediates its anti-angiogenic activity through up- and down-regulation of angiogenic and anti-aniogenic proteins. Furthermore, anti-angiogenic potential of girinimbine was evidenced in vivo on zebrafish model. Girinimbine inhibited neo-vessels formation in zebrafish embryos during 24 hours exposure time. Together, these results demonstrated for the first time that girinimbine could effectively suppress angiogenesis and strongly suggest that it might be a novel angiogenesis inhibitor. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anti-angiogenic" title="anti-angiogenic">anti-angiogenic</a>, <a href="https://publications.waset.org/abstracts/search?q=carbazole%20alkaloid" title=" carbazole alkaloid"> carbazole alkaloid</a>, <a href="https://publications.waset.org/abstracts/search?q=girinimbine" title=" girinimbine"> girinimbine</a>, <a href="https://publications.waset.org/abstracts/search?q=zebrafish" title=" zebrafish"> zebrafish</a> </p> <a href="https://publications.waset.org/abstracts/13579/in-vitro-and-in-vivo-antiangiogenic-activity-of-girinimbine-isolated-from-murraya-koenigii" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13579.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">376</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">106</span> Design, Synthesis and In-Vitro Antibacterial and Antifungal Activities of Some Novel Spiro[Azetidine-2, 3’-Indole]-2, 4(1’H)-Dione </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ravi%20J.%20Shah">Ravi J. Shah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present study deals with the synthesis of novel spiro[azetidine-2, 3’-indole]-2’, 4(1’H)-dione derivative from the reactions of 3-(phenylimino)-1,3-dihydro-2H-indol-2-one derivatives with chloracetyl chloride in presence of triethyl amine (TEA). All the compounds were characterized using IR, 1H NMR, MS and elemental analysis. They were screened for their antibacterial and antifungal activities. Results revealed that, compounds (7a), (7b), (7c), (7d) and (7e) showed very good activity with MIC value of 6.25-12.5 μg/ml against three evaluated bacterial strains and the remaining compounds showed good to moderate activity comparable to standard drugs as antibacterial agents. Compounds (7c) and (7h) displayed equipotent antifungal activity in comparison to standard drugs. Structure-activity relationship study of the compounds showed that the presence of electron withdrawing group substitution at 5’ and 7’ positions of indoline ring and on ortho or para position of phenyl ring increases both antibacterial and antifungal activity of the compound. Henceforth, our findings will have a good impact on chemists and biochemists for further investigations in search of bromine containing spiro fused antimicrobial agents. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antibacterial%20activity" title="antibacterial activity">antibacterial activity</a>, <a href="https://publications.waset.org/abstracts/search?q=antifungal%20activity" title=" antifungal activity"> antifungal activity</a>, <a href="https://publications.waset.org/abstracts/search?q=2-Azetidinone" title=" 2-Azetidinone"> 2-Azetidinone</a>, <a href="https://publications.waset.org/abstracts/search?q=indoline" title=" indoline "> indoline </a> </p> <a href="https://publications.waset.org/abstracts/26460/design-synthesis-and-in-vitro-antibacterial-and-antifungal-activities-of-some-novel-spiroazetidine-2-3-indole-2-41h-dione" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26460.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">491</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">105</span> Juniperus thurefera Multiplication Tests by Cauttigs in Aures, Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Khater">N. Khater</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20A.%20Menina"> S. A. Menina</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Benbouza"> H. Benbouza</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Juniperus thurefera is an endemic cupressacée constitutes a forest cover in the mountains of Aures (Algeria). It is a heritage and important ecological richness but continues to decline, highly endangered species in danger of extinction, these populations show significant originality due to climatic conditions of the environment, because of its strength and extraordinary vitality, made a powerful but fragile and unique ecosystem in which natural regeneration by seed is almost absent in Algeria. Because of the quality of seeds that are either dormant or affected at the tree and the ground level by a large number of pests and parasites, which will lead to the total disappearance of this species and consequently leading to the biodiversity. View the ecological and socio- economic interest presented by this case, it deserves to be preserved and produced in large quantities in this respect. The present work aims to try to regenerate the Juniperus thurefera via vegetative propagation. We studied the potential of cuttings to form adventitious roots and buds. Cuttings were taken from young subjects from 5 to 20 years treated with indole butyric acid (AIB) and planted out-inside perlite under atomizer whose temperature and light are controlled. Results indicated that the percentage of developing buds on cuttings is better than the rooting ones. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Juniperus%20thurefera" title="Juniperus thurefera">Juniperus thurefera</a>, <a href="https://publications.waset.org/abstracts/search?q=indole%20butyric%20acid" title=" indole butyric acid"> indole butyric acid</a>, <a href="https://publications.waset.org/abstracts/search?q=cutting" title=" cutting"> cutting</a>, <a href="https://publications.waset.org/abstracts/search?q=buds" title=" buds"> buds</a>, <a href="https://publications.waset.org/abstracts/search?q=rooting" title=" rooting"> rooting</a> </p> <a href="https://publications.waset.org/abstracts/30083/juniperus-thurefera-multiplication-tests-by-cauttigs-in-aures-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30083.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">271</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">104</span> Methanolic Extract of the Exudates of Aloe Otallensis and Its Effect on Leishmania Donovani Parasite</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zerihun%20Tesfaye%20Nigusse">Zerihun Tesfaye Nigusse</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objective: This study evaluates the antileishmanial activity of the methanolic extract of Aloe otallensis (A. otallensis) on the promastigote stage of Leishmaniadonovani (L. donovani) as compared to standard drugs and to screen its phytochemical constituents. Methods: Phytochemical screening was done by using the method mentioned by Evans and Trease on methanolic extract of the exudates of Aloe otallensis leaves. The extract was also evaluated for in vitro antileishmanial activity against L. donavani, which is found in the Parasitology Unit of Black Lion Hospital. The result was compared to standard drugs of sodium stibogluconate, milfostin and paramomycin. Results: The extract has good antileishmanial activity with an IC50 of 0.123 0 μg/mL on L. donovani (AM 563). The experimental data showed that relatively, it had better activity than paramomycin and milfostin but less activity than sodium stibogluconate. The data analyses were done by GraphPad Prism version 5 software after it was read by an ELISA reader at the wavelength of 650 nm. The phytochemical screening of the exudates of A. otallensis showed the presence of phenol, alkaloid and saponin. Conclusions: The methanol extract of the exudates of A.otallensishas a good anti- leishmaniasis activity and this may be attributed to phenol, alkaloid and saponin present in the plant. But it needs further analysis for the conformation of which constituent presents in high concentration to know which one has the strongest effect. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anti%20leshimaniasis" title="anti leshimaniasis">anti leshimaniasis</a>, <a href="https://publications.waset.org/abstracts/search?q=aloe%20otallensis" title=" aloe otallensis"> aloe otallensis</a>, <a href="https://publications.waset.org/abstracts/search?q=leshimania%20ethiopica" title=" leshimania ethiopica"> leshimania ethiopica</a>, <a href="https://publications.waset.org/abstracts/search?q=IC50" title=" IC50"> IC50</a> </p> <a href="https://publications.waset.org/abstracts/188744/methanolic-extract-of-the-exudates-of-aloe-otallensis-and-its-effect-on-leishmania-donovani-parasite" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/188744.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">41</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">103</span> Synthesis of Biologically Active Heterocyclic Compounds via C-H Bond Activation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Neeraj%20Kumar%20Mishra">Neeraj Kumar Mishra</a>, <a href="https://publications.waset.org/abstracts/search?q=In%20Su%20Kim"> In Su Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The isoindoline, indazole and indole heterocycles are ubiquitous structural motif found in heterocyclic compounds as they exhibit biological and medicinal applications. For example, isoindoline motif is present in molecules that act as endothelin-A receptor antagonists and dipeptidyl peptidase inhibitors. Moreover, isoindoline derivatives are very crucial constituents in the field of materials science as attractive candidates for organic light-emitting devices. However, compounds containing the indazole motif are known to exhibit to a variety of biological activities, such as estrogen receptor, HIV protease inhibition and anti-tumor activity. The prevalence of indazoles and indoles has led to the development of many useful methods for their preparation. Thus, isoindoline, indazole and indole heterocycles can be new candidates for the next generation of pharmaceuticals. Therefore, the development of highly eﬃcient strategies for the formation of these heterocyclic architectures is an area of great interest in organic synthesis. The past years, transition-metal-catalyzed C−H activation followed by annulation reaction has been frequently used as a powerful tool to construct various heterocycles. Herein, we describe our recent achievements about the transition-metal-catalyzed tandem cyclization reactions of N-benzyltriflamides, 1,2-disubstituted arylhydrazines, acetanilides, etc. via C−H bond activation to access the corresponding bioactive heterocylic scaffolds. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biologically%20active" title="biologically active">biologically active</a>, <a href="https://publications.waset.org/abstracts/search?q=C-H%20activation" title=" C-H activation"> C-H activation</a>, <a href="https://publications.waset.org/abstracts/search?q=heterocyclic%20compounds" title=" heterocyclic compounds"> heterocyclic compounds</a>, <a href="https://publications.waset.org/abstracts/search?q=transition-metal%20catalysts" title=" transition-metal catalysts"> transition-metal catalysts</a> </p> <a href="https://publications.waset.org/abstracts/58546/synthesis-of-biologically-active-heterocyclic-compounds-via-c-h-bond-activation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58546.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">309</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">102</span> Preliminary Study of the Potential of Propagation by Cuttings of Juniperus thurefera in Aures (Algeria)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Khater">N. Khater</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Djbablia"> I. Djbablia</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Telaoumaten"> A. Telaoumaten</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20A.%20Menina"> S. A. Menina</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Benbouza"> H. Benbouza</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Thureferous Juniper is an endemic cupressacée constitutes a forest cover in the mountains of Aures (Algeria ). It is an heritage and important ecological richness, but continues to decline, highly endangered species in danger of extinction, these populations show significant originality due to climatic conditions of the environment, because of its strength and extraordinary vitality, made a powerful but fragile and unique ecosystem in which natural regeneration by seed is almost absent in Algeria. Because of the quality of seeds that are either dormant or affected at the tree and the ground level by a large number of pests and parasites, which will lead to the total disappearance of this species and consequently leading to the biodiversity. View the ecological and social- economic interest presented by this case, it deserves to be preserved and produced in large quantities in this respect. The present work aims to try to regenerate the Juniperus thurefera via vegetative propagation. We studied the potential of cuttings to form adventitious roots and buds. Cuttings were taken from young subjects from 5 to 20 years treated with indole butyric acid (AIB) and planted out inside perlite under atomizer whose temperature and light are controlled. The results show that the rate of rooting is important and encourages the regeneration of this species through vegetative propagation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=juniperus%20thurefera" title="juniperus thurefera">juniperus thurefera</a>, <a href="https://publications.waset.org/abstracts/search?q=indole%20butyric%20acid" title=" indole butyric acid"> indole butyric acid</a>, <a href="https://publications.waset.org/abstracts/search?q=cutting" title=" cutting"> cutting</a>, <a href="https://publications.waset.org/abstracts/search?q=buds" title=" buds"> buds</a>, <a href="https://publications.waset.org/abstracts/search?q=rooting" title=" rooting"> rooting</a> </p> <a href="https://publications.waset.org/abstracts/31483/preliminary-study-of-the-potential-of-propagation-by-cuttings-of-juniperus-thurefera-in-aures-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31483.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">307</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=monoterpenoid%20indole%20alkaloid&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=monoterpenoid%20indole%20alkaloid&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=monoterpenoid%20indole%20alkaloid&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=monoterpenoid%20indole%20alkaloid&page=5">5</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=monoterpenoid%20indole%20alkaloid&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a target="_blank" rel="nofollow" href="https://publications.waset.org/static/files/WASET-16th-foundational-anniversary.pdf">WASET celebrates its 16th foundational anniversary</a></li> </ul> </div> <div class="col-md-2"> <ul class="list-unstyled"> Account <li><a href="https://waset.org/profile">My Account</a></li> </ul> </div> <div class="col-md-2"> <ul 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