An Organodiselenide with Dual Mimic Function of Sulfhydryl Oxidases and Glutathione Peroxidases: Aerial Oxidation of Organothiols to Organodisulfides
作者:Vandana Rathore、Aditya Upadhyay、Sangit Kumar
DOI:10.1021/acs.orglett.8b02756
日期:2018.10.5
peroxidase (GPx) enzymes for oxidation of thiols by oxygen and hydrogenperoxide, respectively, into disulfides has been presented. The developed catalyst oxidizes an array of organothiols into respective disulfides in practical yields by using aerial O2 to avoid any reagents/additives, base, and light source. The synthesized diselenide also catalyzes the reduction of hydrogenperoxide into water by following
<i>S</i>-Adenosylhomocysteine Analogue of a Fairy Chemical, Imidazole-4-carboxamide, as its Metabolite in Rice and Yeast and Synthetic Investigations of Related Compounds
S-ICAr-H (8a), as a metabolite of imidazole-4-carboxamide (ICA) in rice and yeast (Saccharomyces cerevisiae). In order to determine its absolute configuration, an efficient synthetic method of 8a was developed. This synthetic strategy was applicable to the preparation of analogues of 8a that might be biologically very important, such as S-ICAr-M (9), S-AICAr-H (10), and S-AICAr-M (11).
reaction with formaldehyde in acetic acid to give (RS)-1,3-thiazane-4-carboxylic acid monohydrate [(RS)-THA·H2O]. An asymmetrictransformation of (RS)-THA·H2O was achieved via salt formation with optically active tartaric acid in the presence of salicylaldehyde in acetic acid. The (R)- and (S)-THA obtained, respectively, from the salt of (R)-THA with (2R, 3R)-tartaric acid and its enantiomeric salt were
3-Amino-2-hydroxyamides and related compounds as inhibitors of methionine aminopeptidase-2
作者:George S. Sheppard、Jieyi Wang、Megumi Kawai、Nwe Y. BaMaung、Richard A. Craig、Scott A. Erickson、Linda Lynch、Jyoti Patel、Fan Yang、Xenia B. Searle、Pingping Lou、Chang Park、Ki H. Kim、Jack Henkin、Richard Lesniewski
DOI:10.1016/j.bmcl.2003.12.031
日期:2004.2
and related hydroxyamides and acylhydrazines were identified as inhibitors of human methionine aminopeptidase-2 (MetAP2). Examination of substituents through parallel synthesis and iterative structure-based design allowed the identification of potent inhibitors with good selectivity against MetAP1. Diacylhydrazine 3t (A-357300) was identified as an analogue displaying inhibition of methionine processing