Abstract A series of 1,4-dihydro-1,3,5-triazine derivatives were designed and synthesized and their antibacterial and antifungal activities were evaluated. Most of the synthesized compounds showed potent inhibition of several Gram-positive bacterial strains (including multidrug-resistant clinical isolates) and Gram-negative bacterial strains, with minimum inhibitory concentrations (MICs) in the range
摘要设计合成了一系列的1,4-二氢-1,3,5-三嗪衍生物,并对其抗菌和抗真菌活性进行了评价。大多数合成的化合物对几种革兰氏阳性细菌菌株(包括耐多药临床分离株)和革兰氏阴性细菌菌株均具有有效的抑制作用,其最低抑菌浓度(MIC)在2.1-181.2μmol/ L范围内。化合物7a和7c对革兰氏阳性菌(例如金黄色葡萄球菌4220),革兰氏阴性菌(例如大肠杆菌1924)和白色念珠菌7535表现出最强的抑制活性,MIC值为2.1或4.1μmol/ L. 尤其是,化合物7a最有效,对四种具有多重耐药性的革兰氏阳性细菌菌株的MIC为2.1μmol/ L。
Synthesis and biological evaluation of tryptophan-derived rhodanine derivatives as PTP1B inhibitors and anti-bacterial agents
作者:Hongyan Liu、Danwen Sun、Hang Du、Changji Zheng、Jingya Li、Huri Piao、Jia Li、Liangpeng Sun
DOI:10.1016/j.ejmech.2019.03.059
日期:2019.6
Several series of novel tryptophan-derived rhodanine derivatives were synthesized and identified as potential competitive PTP1B inhibitors and antibacterial agents. Among the compounds studied, 10b was found to have the best in vitro inhibition activity against PTP1B (IC50= 0.36 +/- 0.02 mu M). In addition, the compounds also showed potent inhibition against other PTPs, especially CDC25B. Molecular docking analysis demonstrated that compounds 7c and 10b could occupy both the catalytic site and the adjacent pTyr binding site simultaneously. The compounds also showed higher levels of activity against gram-positive strains, the gram-negative strain Escherichia coli 1924, and multidrug-resistant gram-positive bacterial strains. Compounds 7c, 8c, 9e, 10a, and 10c had comparable or more potent antibacterial activity than the positive controls. (C) 2019 Elsevier Masson SAS. All rights reserved.
Synthesis and potential antibacterial activity of new rhodanine-3-acetic acid derivatives
A series of rhodanine-3-acetic acid derivatives were synthesized and investigated for their antibacterial activity against gram-positive bacteria including multidrug-resistant clinical isolates. Among these compounds, 6k with a MIC of 2 mu g/mL was as active as the standard drug (norfloxacin) but less active than oxacillin against S. aureus. The compounds 6b, 6e, 6h, 6k, 6n, and 6u presented better activities against multidrug-resistant Staphylococcus aureus than the standard drugs (norfloxacin and oxacillin), especially 6k with a MIC of 1 mu g/mL. However, none of the compounds were active against gram-negative bacteria at 64 mu g/mL.