Synthesis, molecular modeling and biological evaluation of PSB as targeted antibiotics
作者:Kui Cheng、Qing-Zhong Zheng、Jin Hou、Yang Zhou、Chang-Hong Liu、Jing Zhao、Hai-Liang Zhu
DOI:10.1016/j.bmc.2010.02.052
日期:2010.4
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 β-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
我们在这里描述了一系列肽和席夫碱(PSB)小分子的设计,合成,分子建模和生物学评估,这些小分子是大肠杆菌β-酮酰基-酰基载体蛋白合酶III(ecKAS III)的抑制剂。最初的先导化合物是我们先前报道的,我们继续进行结构-活性关系研究,并在本研究中优化潜在抑制剂的先导结构。结果表明,N-(2-(3,5-二氯-2-羟基苄叉亚氨基)丙基)-2-羟基苯甲酰胺(1f)和2-羟基-N-(2-(2-羟基-5-碘苄叉亚氨基)丙基)-4-甲基苯甲酰胺(3e)通过结合ecKAS III的Gly152 / Gly209并适合底物通道的口,具有良好的ecKAS III抑制活性和良好的结合亲和力,并且可以作为潜在的抗生素剂,在0.20-3.13μg/ g范围内显示出最低的抑制浓度值。 mL和针对各种细菌的0.39–3.13μg/ mL。