Pyridinylimidazoles as GSK3β Inhibitors: The Impact of Tautomerism on Compound Activity via Water Networks
作者:Fabian Heider、Tatu Pantsar、Mark Kudolo、Francesco Ansideri、Angela De Simone、Letizia Pruccoli、Taiane Schneider、Marcia Inês Goettert、Andrea Tarozzi、Vincenza Andrisano、Stefan A. Laufer、Pierre Koch
DOI:10.1021/acsmedchemlett.9b00177
日期:2019.10.10
GSK3β/p38α mitogen-activated protein kinase inhibitors and identified N-(4-(4-(4-fluorophenyl)-2-methyl-1H-imidazol-5-yl)pyridin-2-yl)cyclopropanecarboxamide (1) as a potent dual inhibitor of both target kinases. In this study, we aimed to design selective GSK3β inhibitors based on our pyridinylimidazole scaffold. Our efforts resulted in several novel and potent GSK3β inhibitors with IC50 values in the
糖原合酶激酶3β(GSK3β)参与许多病理状况,代表了有吸引力的药物靶标。我们先前曾报道过两种GSK3β/p38α丝裂原活化蛋白激酶抑制剂,并鉴定出N-(4-(4-(4-氟苯基)-2-甲基-1 H-咪唑-5-基)吡啶-2-基)环丙烷甲酰胺(1)作为两种靶激酶的有效双重抑制剂。在这项研究中,我们旨在基于我们的吡啶基咪唑骨架设计选择性GSK3β抑制剂。我们的努力导致了几种新颖且有效的GSK3β抑制剂,其IC 50值在低纳摩尔范围内。5-(2-(环丙烷甲酰胺基)吡啶-4-基)-4-环丙基-1 H-咪唑-2-羧酰胺(6g)在神经元SH-SY5Y细胞中表现出非常好的激酶选择性以及代谢稳定性,并抑制了GSK3β活性。有趣的是,我们观察到了2-甲基咪唑的互变异构状态对于化合物活性的重要性。最后,我们揭示了咪唑-2-羧酰胺如何克服这种关键的互变异构效应,无论它们的互变异构状态如何,咪唑-2-羧酰胺都能通过增强的水网络相互作用来稳定结合。