Discovery of Umibecestat (CNP520): A Potent, Selective, and Efficacious β-Secretase (BACE1) Inhibitor for the Prevention of Alzheimer’s Disease
作者:Rainer Machauer、Rainer Lueoend、Konstanze Hurth、Siem J. Veenstra、Heinrich Rueeger、Markus Voegtle、Marina Tintelnot-Blomley、Jean-Michel Rondeau、Laura H. Jacobson、Grit Laue、Karen Beltz、Ulf Neumann
DOI:10.1021/acs.jmedchem.1c01300
日期:2021.10.28
After identification of lead compound 6, 5-amino-1,4-oxazine BACE1 inhibitors were optimized in order to improve potency, brain penetration, and metabolic stability. Insertion of a methyl and a trifluoromethyl group at the 6-position of the 5-amino-1,4-oxazine led to 8 (NB-360), an inhibitor with a pKa of 7.1, a very low P-glycoprotein efflux ratio, and excellent pharmacological profile, enabling high
在确定先导化合物6 后,对 5-氨基-1,4-恶嗪 BACE1 抑制剂进行了优化,以提高效力、大脑渗透和代谢稳定性。在 5-amino-1,4-oxazine 的 6-位插入甲基和三氟甲基导致8 ( NB-360 ),一种 ap K a为 7.1的抑制剂,具有非常低的 P-糖蛋白流出率,以及出色的药理特性,可实现高中枢神经系统渗透和暴露。使用NB-360观察到的毛皮颜色变化在临床前动物模型的功效研究中,引发了对该系列的进一步优化。在此,我们描述了导致发现 3-氯-5-三氟甲基-吡啶-2-羧酸 [6-((3 R ,6 R )-5-氨基-3,6-二甲基-6-三氟甲基-3,6-dihydro-2 H -[1,4]oxazin-3-yl)-5-fluoro-pyridin-2-yl]amide 15 ( CNP520 , umibecestat ),一种具有优异 BACE1/BACE2 选择性和药代动力学的抑制剂