نتایج جستجو برای: thiazole acetates

تعداد نتایج: 2871  

2017
Behzad Ghasemi Hamid Beyzaei Hadi Hashemi

Purpose: In this study, we have focused on antibacterial effect of newly synthesized thiazole, imidazole, and tetrahydropyrimidine derivatives in Iran on listeria monocytogenes. Materials and Methods: For evaluation of antibacterial effect, the disk diffusion method was applied to measure the growth inhibition zone diameter and broth micro dilution was performed to determine the minimum inhibit...

Journal: :The Journal of vitaminology 1963
M AKAGI H KUMAOKA

It has now been firmly established by several groups of workers (1-10) that in yeast thiamine is enzymatically synthesized from pyrimidine pyrophosphate and thiazole monophosphate. However, there is little information about the biosynthetic pathways of pyrimidine and thiazole themselves. Thiamine was found as the first natural com pound containing a thiazole ring. Recently, the presence of the ...

A series of ethyl 2-[2-arylamino-4-(thiophen-2-yl)thiazol-5-yl] acetates (5a-5k) and ethyl 2-[2-(arylhydrazino)-4-(thiophen-2-yl)thiazol-5-yl] acetates (9a-9g) were synthesized and screened for their anti-inflammatory, analgesic, and antioxidant activities. In vivo test results showed that the compounds with halogen substitution (5c, 5g, 5h, 5i and 5j) at the para position on the 2-aryl amino g...

Journal: :Molecular Crystals and Liquid Crystals 2023

Detailed structural and noncovalent interactions in two thiazole derivatives (N-(4-Bromophenyl)-2-(methylthio)thiazole-5-carboxamide Ethyl-5-((4-bromophenyl)carbamoyl)thiazole-4-carboxylate) are investigated by single crystal X-ray diffraction study computational approaches. The structure investigation revealed that various like C-H…O, N-H…O, N-H…N hydrogen bonds Br…Br involved constructing rin...

Journal: :THE JOURNAL OF VITAMINOLOGY 1968

Journal: :Cancer research 1970
S M Cohen E Ertürk J M Price G T Bryan

2-Hydrazino-4-(5-nitro-2-furyl)thiazole , 2-(2 , 2-dimethyihy drazi no)-4-(5-nitro-2-furyl)thiazole, 2-hydrazino-4-(4-nitro phenyl)thiazole, and 2-hydrazino-4-(4-aminophenyl)thiazole were fed to female Sprague-Dawley rats, and all were found to be potent carcinogens. Each induced chiefly carcinomas of the mammary gland (32/35 , 30/3 1, 27/34, 34/35 , respec tively), as well as a lower incidence...

2011
Georgi Hristov Ivanka Stankova

In the search for new and effective prodrugs against the herpes simplex virus, a series of acyclovir analogues with a thiazole ring containing amino acids (glycine, alanine, valine, leucine) has been investigated. The chemical stability of some of the compounds containing different residues was studied at pH 1 and pH 7.4 at a temperature of 37°C. An HPLC method was developed for quantification ...

Journal: :Organic letters 2002
Shulin Wu Weimin Wang Wenjun Tang Min Lin Xumu Zhang

[reaction: see text] The chiral disphosphines with tunable dihedral angles (TunaPhos) have been used for asymmetric hydrogenation of enol acetates and dihedral-angle-dependent enantioselectivities were observed. C2-TunaPhos has been proved to be effective for Ru-catalyzed asymmetric hydrogenation of electron-deficient and other enol acetates.

2014
Yumei Xiao Zhanhu Sun Hongchao Guo Ohyun Kwon

This review discusses the tertiary phosphines possessing various chiral skeletons that have been used in asymmetric nucleophilic organocatalytic reactions, including annulations of allenes, alkynes, and Morita-Baylis-Hillman (MBH) acetates, carbonates, and ketenes with activated alkenes and imines, allylic substitutions of MBH acetates and carbonates, Michael additions, γ-umpolung additions, an...

2003
G. W. Camiener G. M. Brown

The biosynthesis of thiamine appears to be accomplished with the initial formation of the pyrimidine and thiazole moieties by independent biosynthetic pathways, followed by a final step in which 2-methyl-4-amino-5-hydroxymethylpyrimidine and 4methyl-5-(/3-hydroxyethyl) thiazole are joined together to give thiamine. This conclusion was indicated originally from the observations that certain thia...

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