Dual mode of action of phenyl-pyrazole-phenyl (6-5-6 system)-based PPI inhibitors: alpha-helix backbone versus alpha-helix binding epitope
作者:Natalya I. Vasilevich、Ilya I. Afanasyev、Eugene A. Rastorguev、Dmitry V. Genis、Valery S. Kochubey
DOI:10.1039/c3md00211j
日期:——
A new class of alpha-helix mimetics, based on the phenyl-pyrazole-phenyl (6-5-6) system, has been designed and synthesized. The ability of the new compounds to inhibit PPIs was confirmed using an MDM2-p53 binding assay. The library, containing completely new compounds, revealed an excellent hit rate of 15%, had satisfactory physicochemical properties (~38% soluble compounds), and the ligand efficiency of the best compound was 0.21 (0.22 for nutlin-3 in the same assay). Dual mode of action of these inhibitors was suggested based on computer modeling: depending on the nature of their substituents they could act as either an alpha-helix backbone mimetic or an alpha-helix binding epitope mimetic.
一种基于苯基-吡唑-苯基(6-5-6)系统的新型α-螺旋模拟物已被设计和合成。通过MDM2-p53结合测定确认了新化合物的PPI抑制能力。该化合物库包含了全新的化合物,显示出15%的出色命中率,物理化学性质良好(约38%可溶性化合物),最佳化合物的配体效率为0.21(在相同测定中nutlin-3为0.22)。根据计算机模型,这些抑制剂具有双重作用模式:根据其取代基的性质,它们可以作为α-螺旋骨架模拟物或α-螺旋结合表位模拟物。