Non-Peptidic Small-Molecule Inhibitors of the Single-Chain Hepatitis C Virus NS3 Protease/NS4A Cofactor Complex Discovered by Structure-Based NMR Screening
作者:Daniel F. Wyss、Ashok Arasappan、Mary M. Senior、Yu-Sen Wang、Brian M. Beyer、F. George Njoroge、Mark A. McCoy
DOI:10.1021/jm0305117
日期:2004.5.1
binding sites, were linked together producing competitive inhibitors of the HCV NS3 protease with potencies in the micromolar range. This example illustrates that the low molecular weight scaffolds discovered from structure-based NMR screening can be optimized with focused structure-guided chemistry to produce potent nonpeptidic small-molecule inhibitors of the HCV NS3 protease.
基于NMR的定制片段库筛选确定了16个小分子命中,它们与丙型肝炎病毒(HCV)的NS4A结合NS3蛋白酶的底物结合位点弱结合(K(D)约100 microM至10 mM)。通过NMR和生化数据的结合来评估SAR的五类NMR命中物的类似物,并且在大多数情况下,具有改进的效力(K(D)约K(I)约40 microM至1 mM)的优化命中。NMR化学位移扰动数据用于确定这五个类似物系列中活性位点定向支架的结合位置和方向。这些支架中的两个在近端S1-S3和S2'底物结合位点处结合酶,连接在一起,产生具有微摩尔范围效价的HCV NS3蛋白酶竞争性抑制剂。