Results 101 to 110 of about 43,878 (366)

Synthesis and Anticancer Activities of Thiazoles, 1,3‐Thiazines, and Thiazolidine Using Chitosan‐Grafted‐Poly(vinylpyridine) as Basic Catalyst.

open access: yes, 2015
A series of thiazoles (III) and (V), 1,3-thiazines (IX), and thiazolidine (VII) is prepared in the presence of an environmentally friendly basic chitosan-grafted-poly(vinylpyridine) catalyst.
S. Riyadh   +3 more
semanticscholar   +1 more source

A facile synthesis and anticancer activity of some novel thiazoles carrying 1,3,4-thiadiazole moiety

open access: yesChemistry Central Journal, 2017
BackgroundThiazoles and 1,3,4-thiadiazoles have been reported to possess various pharmacological activities.ResultsA novel series of thiazoles carrying 1,3,4-thiadiazole core were designed and prepared via the reaction of the 2-(4-methyl-2-phenylthiazole-
Sobhi M. Gomha   +4 more
semanticscholar   +1 more source

Palladium Nanoparticles Dispersed in Alginate Beads as an Efficient, Eco‐friendly, and Sustainable Heteregeneous Catalyst: Testing in Carbon‐Sulfur and Carbon‐Carbon Cross‐Coupling Reactions

open access: yesAsian Journal of Organic Chemistry, EarlyView.
Abstract The development of sustainable and efficient catalysts featuring palladium nanoparticles (Pd NPs) is highly sought after. In this context, sodium alginate, a natural polymer, presents a promising eco‐friendly support material for Pd NPs.
Ramesh Katla   +6 more
wiley   +1 more source

Utility of 3-Acetyl-6-bromo-2H-chromen-2-one for the Synthesis of New Heterocycles as Potential Antiproliferative Agents

open access: yesMolecules, 2015
Coumarin derivatives containing pyrazolo[1,5-a]pyrimidine, tetrazolo[1,5-a]pyrimidine, imidazo[1,2-a]pyrimidine, pyrazolo[3,4-d]pyrimidine, 1,3,4-thiadiazoles and thiazoles were synthesized from 6-bromo-3-(3-(dimethylamino)acryloyl)-2H-chromen-2-one ...
Sobhi M. Gomha   +2 more
doaj   +1 more source

Selective anti-malarial minor groove binders [PDF]

open access: yes, 2016
A set of 31 DNA minor groove binders (MGBs) with diverse structural features relating to both physical chemical properties and DNA binding sequence preference has been evaluated as potential drugs to treat Plasmodium falciparum infections using a ...
Avery, Vicky M.   +4 more
core   +1 more source

Photochemische Permutation von Indazolen zu Benzimidazolen

open access: yesAngewandte Chemie, EarlyView.
Hier stellen wir eine photochemische Strategie für die direkte Permutation von 1H‐ und 2H‐Indazolen zu Benzimidazolen vor. Dieser Ansatz beruht auf einem zweistufigen Mechanismus aus Tautomerisierung im angeregten Zustand und photochemischer Umlagerung, bietet einen breiten Anwendungsbereich, hohe Ausbeuten und funktionelle Gruppentoleranz und erhöht ...
Thiago dos Santos   +5 more
wiley   +1 more source

Synthesis of 4-(2-Methylthiazol-4-yl)-Hexahydroquinoline and 1,4-Dihydropyrimidin Derivatives [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2011
A series of new hexahydroquinoline and 1,4-dihydropyrimidine derivatives were synthesized. Condensation of 2-methyl- thiazole-4-carboxaldehyde (1) with 1,3-cyclohexanedione and alkyl 3- aminocrotonate afforded 4-(2-methyl-thiazol-4-yl)-hexahydroquinoline
A. Shafiee
doaj  

Synthesis and Cytotoxicity Evaluation of Some Novel Thiazoles, Thiadiazoles, and Pyrido[2,3-d][1,2,4]triazolo[4,3-a]pyrimidin-5(1H)-ones Incorporating Triazole Moiety

open access: yesMolecules, 2015
Reactions of hydrazonoyl halides and each of methyl 2-(1-(5-methyl-1-phenyl-1H-1,2,3-triazol-4-yl)ethylidene)hydrazine-1-carbodithioate and 2-(1-(5-methyl-1-phenyl-1H-1,2,3-triazol-4-yl)ethylidene)hydrazine-1-carbothioamide afforded 2-(1-(5-methyl-1 ...
Sobhi M. Gomha   +2 more
doaj   +1 more source

Oxazole and thiazole analogs of sulindac for cancer prevention [PDF]

open access: yes, 2018
Aim: Experimental and epidemiological studies and clinical trials suggest that nonsteroidal anti-inflammatory drugs possess antitumor potential. Sulindac, a widely used nonsteroidal anti-inflammatory drug, can prevent adenomatous colorectal polyps and ...
Connelly, Michele C.   +4 more
core   +2 more sources

Optimizing headspace temperature and time sampling for identification of volatile compounds in ground roasted Arabica coffee [PDF]

open access: yes, 2001
Equilibration time and temperature were the factors studied to choose the best conditions for analyzing volatiles in roasted ground Arabica coffee by a static headspace sampling extraction method. Three temperatures of equilibration were studied: 60, 80,
Ansorena-Artieda, D. (Diana)   +3 more
core  

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