Discovery of Cyclic Acylguanidines as Highly Potent and Selective β-Site Amyloid Cleaving Enzyme (BACE) Inhibitors: Part I—Inhibitor Design and Validation
作者:Zhaoning Zhu、Zhong-Yue Sun、Yuanzan Ye、Johannes Voigt、Corey Strickland、Elizabeth M. Smith、Jared Cumming、Lingyan Wang、Jesse Wong、Yu-Sen Wang、Daniel F. Wyss、Xia Chen、Reshma Kuvelkar、Matthew E. Kennedy、Leonard Favreau、Eric Parker、Brian A. McKittrick、Andrew Stamford、Michael Czarniecki、William Greenlee、John C. Hunter
DOI:10.1021/jm901408p
日期:2010.2.11
A number of novel amidine containing heterocycles were designed to reproduce the unique interaction pattern, revealed by X-ray crystallography, between the BACE-1 catalytic diad and a weak NMR screening hit (3), with special attention paid to maintaining the appropriate basicity and limiting the number of H-bonding donors of these scaffolds. The iminohydantoin cores (10 and 23) were examined first
X射线晶体学揭示了BACE-1催化二元化合物与弱NMR筛选产物之间通过X射线晶体学揭示的许多新颖的含am杂环,以重现独特的相互作用模式(3),并特别注意保持适当的碱度和限制这些支架的H键供体的数目。亚氨基乙内酰脲核心(10和23首先检查),发现它们以两种结合方式(A和B)中的一种与催化二元体相互作用,每种结合方式的亚氨基乙内酰脲核心相对于另一种都翻转180°。每个核心内的idine结构基序与催化双单元的不同天冬氨酸形成双齿相互作用。两种模式均重现了抑制剂与催化天冬氨酸之间的高度保守的相互作用模式,如图3所示。。已获得有效的亚氨基乙内酰脲BACE-1抑制剂,验证了作为天冬氨酰蛋白酶催化位点抑制剂的分子设计。已经发现具有高配体效率的脑渗透小分子BACE抑制剂,为将这些抑制剂进一步发展为高效,选择性和体内有效的BACE抑制剂提供了多种策略。