Yazar "Yurttaş, Leyla" için listeleme
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Synthesis and anticancer activity of some 2-[3/4-(2-substituted phenyl-2-oxoethoxy)benzylidene]-6-substituted-2,3-dihydro-1H-inden-1-one derivatives
Gündoğdu-Karaburun, Nalan; Karaburun, Ahmet Çağrı; Demirayak, Şeref; Kayagil, İsmail; Yurttaş, Leyla (Bentham Science Publishers, 2014)The synthesis of 2-[3/ 4-(2-substituted phenyl-2-oxoethoxy) benzylidene]-6-substituted-2,3-dihydro-1H-inden-1one derivatives and the investigation of their anticancer activity were studied. 2-(3- or 4-Hydroxybenzylidene) ... -
Synthesis and antifungal activity evaluation of New 1,2,4-triazole derivatives bearing salicylidene hydrazide moiety
Demirayak, Şeref; Kayagil, İsmail; Yurttaş, Leyla; Er, Sevda (Bentham Science Publ Ltd, 2016)A series of new N'-(arylidene)-2-[(1-(4-nitrophenyl)-1H-1,2,4-triazol-3-yl)oxy]acetohydrazide derivatives (116) were prepared and tested for theira ntifungal activity against six plant pathogens, three human pathogens and ... -
Synthesis and antimicrobial activity evaluation of novel nitrofuranthiazoles
Yurttaş, Leyla; Şahin, Zafer; Er, Sevda; Demirayak, Şeref (University of Istanbul, 2016)In this work, six novel 4-aryl-2-[2-((5-nitrofuran-2-yl)methylene)hydrazinyl] thiazole derivatives (2a-f) were synthesized starting from 5-nitro-2-furaldehyde diacetate by using Hantzsch thiazole synthesis. The antimicrobial ... -
Synthesis and antimycobacterial activity evaluation of isatin-derived 3- [(4-aryl-2-thiazolyl])hydrazone]-1H-indol-2,3-diones
Yurttaş, Leyla; Ertaş, Merve; Cankılıç Yılmaz, Meral; Demirayak, Şeref (University of Istanbul, 2017)A series of 3-[(4-aryl-2-thiazolyl)hydrazone]-1H-indol-2,3-dione derivatives (2a-f) were designed and synthesized using isatin as starting material. The obtained thiazole compounds were screened to investigate their ... -
Synthesis and antiproliferative activity of 2-arylidene 6-(2-aryl-2-oxoethoxy) benzofuran-3-one derivatives
Demirayak, Şeref; Yurttaş, Leyla; Karaburun, Ahmet Cağrı; Gündoğdu Karaburun, Nalan; Kayagil, İsmail (Bentham Science Publ Ltd, 2016)The synthesis of 2-arylidene 6-(2-aryl-2-oxoethoxy) benzofuran-3-one derivatives was reported and selected compounds were determined for their anticancer activity evaluation in National Cancer Institute NCI, USA according ... -
Synthesis and antitumor activity evaluation of new 2-(4-aminophenyl)benzothiazole derivatives bearing different heterocyclic rings
Yurttaş, Leyla; Tay, Funda; Demirayak, Şeref (Taylor & Francis, 2015)Twenty-five new N-[4-(benzothiazole-2-yl)phenyl]acetamide derivatives bearing different heterocyclic ring systems were synthesized using 2-(4-aminophenyl)benzothiazole structure as a pharmacophoric group. Final compounds ... -
Synthesis and biological evaluation of some 1,2-disubstituted benzimidazole derivatives as new potential anticancer agents
Yurttaş, Leyla; Demirayak, Şeref; Çiftçi Akalın, Gülşen; Yıldırım Ulusoylar, Şafak; Kaplancıklı, Zafer Asım (2013)The synthesis of some new 1-(2-aryl-2-oxoethyl)-2-[(morpholine-4-yl)thioxomethyl]benzimidazole derivatives and investigation of their anticancer activities were the aims of this work. 2-(Chloromethyl)benzimidazole compound ... -
Synthesis and in vitro antitumor activities of novel thioamide substituted piperazinyl-1,2,4-triazines
Şahin, Zafer; Biltekin, Sevde Nur; Ozansoy, Mehmet; Hemiş, Bervis; Yurttaş, Leyla; Berk, Barkın; Demirayak, Şeref (Wiley, 2022)Triazines are in great interest for their potential to mimic nucleoside analog compounds. Three different isomers exist including 1,2,3-triazine, 1,3,5-triazine (s-triazine) and 1,2,4-triazine. All of these skeletons were ... -
Synthesis and initial biological evaluation of substituted 1-phenylamino-2-thio-4,5-dimethyl-1H-imidazole derivatives
In this work, some new 2-[(4,5-dimethyl-1-(arylamino)-1H-imidazol-2-yl) thio]-1-(aryl)ethanone derivatives were synthesized and investigated for their antibacterial, antifungal and anticancer activities. Toxicity of the ... -
Synthesis of novel 3, 5, 6-trisubstituted triazine derivatives and their biological activity evaluation as potential antitumor and anti-inflammatory agents
Yurttaş, Leyla; Şahin, Zafer; Çiftçi Akalın, Gülşen; Temel Edip, Halide; Demirayak, Şeref (University of Istanbul, 2016)In this study, new 3, 5, 6-trisubstituted 1, 2, 4-triazine derivatives (1-9) were synthesized and their structures were determined by using NMR, IR and Mass spectroscopic methods. In vitro antitumor activities against MCF-7 ... -
Synthesis of some 5,6-diaryl-1,2,4-triazine derivatives and investigation of their cyclooxygenase (COX) inhibitory activity
Ertaş, Merve; Biltekin, Sevde Nur; Berk, Barkın; Yurttaş, Leyla; Demirayak, Şeref (Taylor & Francis Ltd, 2022)Within this study, 20 2-[(5,6-diaryl-1,2,4-triazin-3-yl)thio]-N-(benzo/thiazol-2-yl)acetamide derivatives (4a-4t) were synthesized and COX inhibitory activities of the compounds were investigated. Compounds 4k-4o, which ... -
Synthesis of some N-[4-(benzothiazole-2yl)phenyl]-2-aryloxyacetamide derivatives and their anticancer activities
Tay, Naime Funda; Yurttaş, Leyla; Demirayak, Şeref (Informa Healtcare, 2012)In this study, some N-[4-(Benzothiazole-2-yl)phenyl]-2-aryloxyacetamide derivatives were prepared by reacting N-[4-(benzothiazole-2yl)phenyl]-2-chloroacetamide and different substituent phenol or thiophenol derivatives. ... -
Synthesis, antimicrobial activity and modeling studies of thiazoles bearing pyridyl and triazolyl scaffolds
Tay, Naime Funda; Berk, Barkın; Duran, Murat; Kayagil, İsmail; Yurttaş, Leyla; Biltekin Kaleli, Sevde Nur; Yamaç, Mustafa; Karaduman, Ayşe Betül; Demirayak, Şeref (Walter de Gruyter GmbH, 2022)In this study, novel 4-(5-((2/3/4-substituted benzyl)thio)-4-(4-substituted phenyl)-4H-1,2,4-triazol-3-yl)-2-(pyridin-3/4-yl)thiazoles were synthesized following a multi-step synthetic procedure. All the compounds were ... -
Synthesis, antimicrobial and antioxidant activities of pyridyl substituted thiazolyl triazole derivatives
Tay, Naime Funda; Duran, Murat; Kayagil, İsmail; Yurttaş, Leyla; Göger, Gamze; Göğer, Fatih; Demirci, Fatih; Demirayak, Şeref (Universidade de São Paulo, 2022)In this present study, 63 different 5-[4-methyl-2-(pyridin-3/4-yl)thiazole-5-yl]-4-substituted-3-substituted benzylthio-4H-1,2,4-triazole derivatives were synthesized, and evaluated for their in vitro antimicrobial activity ... -
Synthesis, antioxidant and antimicrobial properties of novel pyridyl-carbonyl thiazoles as dendrodoine analogs
Şahin, Zafer; Biltekin, Sevde Nur; Yurttaş, Leyla; Demirayak, Şeref (Scientific and Technical Research Council of Turkey, 2020)Marine compound dendrodoine was first obtained from tunicate species (Dendrodo grossularia). It has a five-membered ring, namely, it is a heterocycle thiadiazole, which is found rarely in natural sources. Following its ... -
Synthesis, characterization and antibacterial evaluation of new pyridyl-thiazole hybrids of sulfonamides
Şahin, Zafer; Biltekin, Sevde Nur; Yurttaş, Leyla; Demirayak, Şeref (Istanbul University, 2021)Background and Aims: Sulfonamide drugs are a very old and noted group of small molecules, and are still one of the most important antimicrobial compounds. In this study, starting from sulfonamide drugs, new original compounds ... -
Synthesis, characterization, COX1/2 inhibition and molecular modeling studies on novel 2-thio-diarylimidazoles
Şahin, Zafer; Koçoğlu Kalkan, Melike; Berk, Barkın; Yurttaş, Leyla; Bender, Ceysu; Biltekin Kaleli, Sevde Nur; Demirayak, Şeref (Scientific Technical Research Council Turkey-Tubitak, 2021)Heterocyclic compounds with diaryl substituents have been a milestone approach for selective cyclooxygenase 2 (COX 2) inhibition by bioisosteric replacements and modifications. It is also known that thiazole derivatives ... -
Thiazole-substituted benzoylpiperazine derivatives as acetylcholinesterase inhibitors
Şahin, Zafer; Ertaş, Merve; Bender, Ceysu; Bülbül, Emre Fatih; Berk, Barkın; Biltekin, Sevde Nur; Yurttaş, Leyla; Demirayak, Şeref (Wiley, 2018)Hit, Lead & Candidate Discovery After acetylcholine is released into the synaptic cleft, it is reabsorbed or deactivated by acetylcholinesterase (AChE). Studies on Alzheimer's disease (AD) in the mid-20th century proved ...