Results 131 to 140 of about 45,916 (341)

Combined in Vitro and in Silico Studies for the Anticholinesterase Activity and Pharmacokinetics of Coumarinyl Thiazoles and Oxadiazoles

Frontiers in Chemistry, 2018
In a continuation of our previous work for the exploration of novel enzyme inhibitors, two new coumarin-thiazole 6(a–o) and coumarin-oxadiazole 11(a–h) hybrids have been designed and synthesized.
Aliya Ibrar, Ajmal Khan, Majid Ali, Rizwana Sarwar, Saifullah Mehsud, U. Farooq, S. M. A. Halimi, I. Khan, A. Al‐Harrasi   +8 more
semanticscholar   +1 more source

Indole‐Based π‐Extended Monophosphine Ligands for Enhanced Palladium‐Catalyzed Sonogashira Coupling

Journal of Heterocyclic Chemistry, EarlyView.
A general palladium‐catalyzed Sonogashira cross‐coupling of (hetero)aryl chlorides with aliphatic, (hetero)aryl alkynes is described using Pd(dba)₂/PCy2‐Napdole‐phos catalyst system. The reaction protocol exhibits broad substrate scope and the catalyst loading can be down to 0.2 mol% Pd.
Yu Kiu Lau, Chun Pong Hui, Cheuk Long Li, Ho Chung Chang, Man Ho Tse, Ho Kwan Lou, Iat In Chan, Raymond Wai‐Yin Sun, Pui Ying Choy, Fuk Yee Kwong   +9 more
wiley   +1 more source

Synthesis of 1,3,5-Triazepines and Benzo[f][1,3,5]triazepines and Their Biological Activity: Recent Advances and New Approaches

Molecules
This review article discusses the recent progress in synthesizing seven-membered ring 1,3,5-triazepine and benzo[f][1,3,5]triazepine derivatives. These derivatives can be either unsaturated, saturated, fused, or separated.
Ameen Ali Abu-Hashem, Othman Hakami, Nasser Amri, Yousef E. Mukhrish, Ahmed A. M. Abdelgawad   +4 more
doaj   +1 more source

Stepwise cycloaddition reaction of N-phenacylbenzothiazolium bromides and nitroalkenes for tetrahydro-, dihydro- and benzo[d]pyrrolo[2,1-b]thiazoles

Scientific Reports, 2017
The triethylamine promoted stepwise 1,3-dipolar cycloaddition reaction of N-phenacylbenzothiazolium bromides with nitroalkenes in ethanol resulted in a mixture of two isomeric tetrahydrobenzo[d]pyrrolo[2,1-b]thiazoles with cis/trans/cis- and all-trans ...
Gong Jin, Jing Sun, Ren‐Yin Yang, Chaoguo Yan   +3 more
semanticscholar   +1 more source

Transmembrane potential polarization, calcium influx, and receptor conformational state modulate the sensitivity of the imidacloprid-insensitive neuronal insect nicotinic acetylcholine receptor to neonicotinoid insecticides [PDF]

, 2012
Neonicotinoid insecticides act selectively on insect nicotinic acetylcholine receptors (nAChRs). Recent studies revealed that their efficiency was altered by the phosphorylation/dephosphorylation process and the intracellular signaling pathway involved ...
B. Bodereau-Dubois, B. Lapied, D. Calas-List, O. List, O. Marques, P.Y. Communal, S.H. Thany   +6 more
core   +2 more sources

Efficient One‐Pot Synthesis of Benzothiazole Compounds From Vinamidinium Salts

ChemistryOpen, EarlyView.
A catalyst‐free one‐pot reaction of vinamidinium salts with benzothiazole hydrazines efficiently produces 1,3‐bis((3‐methylbenzo[d]thiazol‐2(3H)‐ylidene)hydrazineylidene)propan‐2‐ol (BBTA) and 1‐((1Z,3E)‐1‐(dimethylamino)‐3‐(((Z)‐3‐methylbenzo[d]thiazol‐2(3H)‐ylidene)hydrazineylidene)prop‐1‐en‐2‐yl)pyridin‐1‐ium (DMBT) derivatives.This simple method ...
Zeinab khosravi, Abdolmohammad Mehranpour, Mohammad Reza Mohammadizadeh, Genta Kojya, Satoru Arimitsuc   +4 more
wiley   +1 more source

Scientific Opinion on Flavouring Group Evaluation 76, Revision 1 (FGE.76Rev1): Consideration of sulphur‐containing heterocyclic compounds evaluated by JECFA (59th meeting) structurally related to thiazoles, thiophene, thiazoline and thienyl derivatives from chemical group 29 and miscellaneous substances from chemical group 30 evaluated by EFSA in FGE.21Rev3

EFSA Journal, 2013
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to consider evaluations of flavouring substances assessed since 2000 by the Joint FAO/WHO Expert Committee on Food Additives
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj   +1 more source

Antimicrobial activity, synergism and inhibition of germ tube formation by Crocus sativus-derived compounds against Candida spp [PDF]

, 2016
The limited arsenal of synthetic antifungal agents and the emergence of resistant Candida strains have prompted the researchers towards the investigation of naturally occurring compounds or their semisynthetic derivatives in order to propose new ...
ANGIOLELLA, Letizia, CARRADORI, Simone, CHIMENTI, Paola, Fazzari, Marina, GRANESE, ARIANNA   +4 more
core   +2 more sources

Synthesis of Pyrido[2,3‐d]Azolopyrimidinones: Design and Epidermal Growth Factor Receptor‐Targeted Molecular Docking Toward Novel Anticancer Leads

ChemistryOpen, EarlyView.
New pyrido[2,3‐d]azolopyrimidinones were synthesized and evaluated as potent EGFR‐targeted anticancer leads. Molecular docking and cytotoxicity studies revealed strong receptor binding and submicromolar activity, highlighting this scaffold as a promising framework for future targeted drug development.
Sobhi M. Gomha, Sami A. Al‐Hussain, Basant Farag, AbdElAziz A. Nayl, Wesam Hussein, Abdelwahed R. Sayed, Magdi E. A. Zaki   +6 more
wiley   +1 more source

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

Journal 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