Synthesis, molecular modeling and biological evaluation of PSB as targeted antibiotics

被引:14
作者
Cheng, Kui [1 ]
Zheng, Qing-Zhong [1 ]
Hou, Jin [1 ]
Zhou, Yang [1 ]
Liu, Chang-Hong [1 ]
Zhao, Jing [1 ]
Zhu, Hai-Liang [1 ]
机构
[1] Nanjing Univ, State Key Lab Pharmaceut Biotechnol, Nanjing 210093, Peoples R China
基金
美国国家科学基金会;
关键词
Peptide & Schiff base (PSB); ecKAS III; Antibacterial activity; Molecular modeling; SYNTHASE-III FABH; INHIBITOR; THIOLACTOMYCIN; DISCOVERY;
D O I
10.1016/j.bmc.2010.02.052
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
We described here the design, synthesis, molecular modeling, and biological evaluation of a series of peptide and Schiff bases (PSB) small molecules, inhibitors of Escherichia coli beta-Ketoacyl-acyl carrier protein synthase III (ecKAS III). The initial lead compound was reported by us previously, we continued to carry out structure-activity relationship studies and optimize the lead structure to potent inhibitors in this research. The results demonstrated that both N-(2-(3,5-dichloro-2-hydroxybenzylideneamino)propyl)2- hydroxybenzamide (1f) and 2-hydroxy-N-(2-(2-hydroxy-5-iodobenzylideneamino)propyl)-4-methylbenzamide (3e) posses good ecKAS III inhibitory activity and well binding affinities by bonding Gly152/Gly209 of ecKAS III and fit into the mouth of the substrate tunnel, and can be as potential antibiotics agent, displaying minimal inhibitory concentration values in the range 0.20-3.13 mu g/mL and 0.39-3.13 mu g/mL against various bacteria. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2447 / 2455
页数:9
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