Carbamylmethyl Mercaptoacetate Thioether: A Novel Scaffold for the Development of L1 Metallo-β-lactamase Inhibitors
作者:Ya-Nan Chang、Yang Xiang、Yue-Juan Zhang、Wen-Ming Wang、Cheng Chen、Peter Oelschlaeger、Ke-Wu Yang
DOI:10.1021/acsmedchemlett.7b00058
日期:2017.5.11
100 μM, while compound 5 with a p-methylphenyl substituent was the most potent inhibitor of any individual enzyme, with 97% inhibition at 100 μM and an IC50 value of 0.41 μM against L1. Isothermal titration calorimetry assays corroborate findings from UV-vis spectrophotometric assays that the inhibition of L1 by 5 is dose-dependent. Docking studies suggest that the carboxyl group, the sulfide atom, and
考虑到金属β-内酰胺酶(MβLs)的临床重要性,构建了一种新的支架,N-取代的氨基甲酰基巯基乙酸乙酸酯硫醚。所获得的分子1-16抑制所有三个亚类的MβLs,但优先抑制来自B3亚类的L1。具有p-羧苯基取代基的化合物9表现出最宽的光谱,对100μM的所有亚类的酶均具有至少70%的抑制作用,而具有p-甲基苯基取代基的化合物5是任何单个酶中最有效的抑制剂,具有97%的抑制作用100μM时对L1的IC50值为0.41μM。等温滴定量热法测定法证实了紫外可见分光光度法测定的结果,即5对L1的抑制作用是剂量依赖性的。对接研究表明,羧基,硫化物原子,氨基甲酰基的羰基以螯合方式与Zn2配位。使用表达L1、6和8的大肠杆菌细胞能够将头孢唑林的最小抑制浓度降低8倍。