Application of Fragment-Based NMR Screening, X-ray Crystallography, Structure-Based Design, and Focused Chemical Library Design to Identify Novel μM Leads for the Development of nM BACE-1 (β-Site APP Cleaving Enzyme 1) Inhibitors
作者:Yu-Sen Wang、Corey Strickland、Johannes H. Voigt、Matthew E. Kennedy、Brian M. Beyer、Mary M. Senior、Elizabeth M. Smith、Terry L. Nechuta、Vincent S. Madison、Michael Czarniecki、Brian A. McKittrick、Andrew W. Stamford、Eric M. Parker、John C. Hunter、William J. Greenlee、Daniel F. Wyss
DOI:10.1021/jm901472u
日期:2010.2.11
Fragment-based NMR screening, X-ray crystallography, structure-based design, and focused chemical library design were used to identify novel inhibitors for BACE-1. A rapid optimization of an initial NMR hit was achieved by a combination of NMR and a functional assay, resulting in the identification of an isothiourea hit with a Kd of 15 μM for BACE-1. NMR data and the crystal structure revealed that
基于片段的NMR筛选,X射线晶体学,基于结构的设计和集中的化学文库设计被用于鉴定BACE-1的新型抑制剂。通过将NMR和功能分析相结合,可以快速优化初始NMR命中值,从而鉴定出K d为异硫脲的命中物。对于BACE-1为15μM。NMR数据和晶体结构表明,这种命中使与两个催化天冬氨酸的氢键相互作用,占据了BACE-1活性位点的非主要侧面区域,并向S3亚型(S3sp)延伸。重点基于NMR的杂环异硫脲等位基因搜索导致了BACE-1活性位点定向化合物的几种不同类别,这些化合物具有改善的化学稳定性和理化性质。证明了优化2-氨基吡啶前导系列以产生强效BACE-1抑制剂的策略。环状酰基胍铅系列的基于结构的设计和其优化成纳摩尔BACE-1抑制剂是伴侣纸(的主题J.医学化学式。 2010,53,DOI:10.1021 / jm901408p)。