摘要:
A series of low-molecular weight 2,6-diamino-isonicotinamide BACE-I inhibitors containing an amine transition-state isostere were synthesized and shown to be highly potent in both enzymatic and cell-based assays. These inhibitors contain a trans-S,S-methyl cyclopropane P-3 which bind BACE-1 in a 10s-loop down conformation giving rise to highly potent compounds with favorable molecular weight and moderate to high susceptibility to P-glycoprotein (P-gp) efflux. (c) 2007 Elsevier Ltd. All rights reserved.