Synthesis of the Potent, Selective, and Efficacious β-Secretase (BACE1) Inhibitor NB-360
作者:Heinrich Rueeger、Rainer Lueoend、Rainer Machauer、Siem J. Veenstra、Philipp Holzer、Konstanze Hurth、Markus Voegtle、Mathias Frederiksen、Jean-Michel Rondeau、Marina Tintelnot-Blomley、Laura H. Jacobson、Matthias Staufenbiel、Grit Laue、Ulf Neumann
DOI:10.1021/acs.jmedchem.0c02143
日期:2021.4.22
efflux ratio enabling high central nervous system (CNS) penetration and exposure. Various synthetic routes to access BACE1 inhibitors bearing a 5-amino-6-methyl-6-(trifluoromethyl)-1,4-oxazine headgroup were investigated. Subsequent optimization of the P3 fragment provided the highly potent N-(3-((3R,6R)-5-amino-3,6-dimethyl-6-(trifluoromethyl)-3,6-dihydro-2H-1,4-oxazin-3-yl)-4-fluorophenyl)-5-cyano-3-methylpicolinamide
从铅化合物4开始,对1,4-恶嗪头基进行了优化,以提高效能和脑部渗透能力。着眼于5-氨基-1,4-恶嗪的6位,插入Me和CF 3基团可提供出色的药理学特性,ap K a为7.1,P-gp外排率非常低,因此中枢神经系统(CNS)的渗透和暴露。研究了各种途径获得带有5-氨基-6-甲基-6-(三氟甲基)-1,4-恶嗪头基的BACE1抑制剂。P3片段的后续优化提供了高效的N-(3-((3 R,6 R)-5-氨基-3,6-二甲基-6-(三氟甲基)-3,6-二氢-2 H-1,4-恶嗪-3-基)-4-氟苯基)-5-氰基-3-甲基吡啶酰胺54(NB-360),能够减少显著甲β在小鼠水平,大鼠,和狗在急性和慢性治疗养生方法。