Highly potent macrocyclic BACE-1 inhibitors incorporating a hydroxyethylamine core: Design, synthesis and X-ray crystal structures of enzyme inhibitor complexes
作者:Veronica Sandgren、Tatiana Agback、Per-Ola Johansson、Jimmy Lindberg、Ingemar Kvarnström、Bertil Samuelsson、Oscar Belda、Anders Dahlgren
DOI:10.1016/j.bmc.2012.05.039
日期:2012.7
A series of P1-P3 linked macrocyclic BACE-1 inhibitors containing a hydroxyethylamine (HEA) isostere scaffold has been synthesized. All inhibitors comprise a toluene or N-phenylmethanesulfonamide P2 moiety. Excellent BACE-1 potencies, both in enzymatic and cell-based assays, were observed in this series of target compounds, with the best candidates displaying cell-based IC50 values in the low nanomolar range. As an attempt to improve potency, a phenyl substituent aiming at the S3 subpocket was introduced in the macrocyclic ring. X-ray analyzes were performed on selected compounds, and enzyme-inhibitor interactions are discussed. (C) 2012 Elsevier Ltd. All rights reserved.