5-Benzylidenerhodanine and 5-benzylidene-2-4-thiazolidinedione based antibacterials
摘要:
Herein we outline the antibacterial activity of amino acid containing thiazolidinediones and rhodanines against Gram-positive bacteria Staphylococcus aureus ATCC 31890, Staphylococcus epidermidis and Bacillus subtilis ATCC 6633. The rhodanine derivatives were generally more active than the analogous thiazolidinediones. Compounds of series 5 showed some selectivity for Bacillus subtilis ATCC 6633, the extent of which is enhanced by the inclusion of a non-polar amino acid at the 5-position of the core thiazolidinediones and rhodanines scaffolds. SAR data of series 8 demonstrated improved activity against the clinically more significant Staphylococci with selectivity over Bacillus subtilis ATCC 6633 induced by introduction of a bulky aryl substituent at the 5-position of the core scaffolds. (C) 2012 Elsevier Ltd. All rights reserved.
5-Benzylidenerhodanine and 5-benzylidene-2-4-thiazolidinedione based antibacterials
作者:Ondrej Zvarec、Steven W. Polyak、William Tieu、Kevin Kuan、Huanqin Dai、Daniel Sejer Pedersen、Renato Morona、Lixin Zhang、Grant W. Booker、Andrew D. Abell
DOI:10.1016/j.bmcl.2012.02.100
日期:2012.4
Herein we outline the antibacterial activity of amino acid containing thiazolidinediones and rhodanines against Gram-positive bacteria Staphylococcus aureus ATCC 31890, Staphylococcus epidermidis and Bacillus subtilis ATCC 6633. The rhodanine derivatives were generally more active than the analogous thiazolidinediones. Compounds of series 5 showed some selectivity for Bacillus subtilis ATCC 6633, the extent of which is enhanced by the inclusion of a non-polar amino acid at the 5-position of the core thiazolidinediones and rhodanines scaffolds. SAR data of series 8 demonstrated improved activity against the clinically more significant Staphylococci with selectivity over Bacillus subtilis ATCC 6633 induced by introduction of a bulky aryl substituent at the 5-position of the core scaffolds. (C) 2012 Elsevier Ltd. All rights reserved.
Electrochemical reduction of 5-benzylidene thiazolidine-2,4-diones: a greener approach to the preparation of glitazone APIs
作者:Pedro P. de Castro、Guilherme M. Martins、Ronewalber B. Gomes、Guilherme B. Simoso、Giovanni W. Amarante、Timothy J. Brocksom、Kleber T. de Oliveira
DOI:10.1039/d3cc02363j
日期:——
A transition-metal free methodology for the chemoselective reduction of benzylidene thiazolidine-2,4-diones and similar heterocycles is described, allowing the preparation of a broad scope of the corresponding reduced derivatives in up to 90% yield. The protocol has a simple and safe experimental setup, in which water was employed as the hydrogen source. To further demonstrate the synthetic utility
描述了一种用于化学选择性还原亚苄基噻唑烷-2,4-二酮和类似杂环的无过渡金属方法,允许以高达 90% 的收率制备各种相应的还原衍生物。该协议具有简单且安全的实验装置,其中用水作为氢源。为了进一步证明这种转化的合成效用,制备了抗糖尿病 API 吡格列酮,收率为 81%。据我们所知,这是第一个用于合成吡格列酮的无氢化物和过渡金属的方案,突显了其在学术和工业合成中作为更绿色替代品的潜在用途。