Discovery of (S)-2-((S)-2-(3,5-difluorophenyl)-2-hydroxyacetamido)-N-((S,Z)-3-methyl-4-oxo-4,5-dihydro-3H-benzo[d][1,2]diazepin-5-yl)propanamide (BMS-433796): A γ-secretase inhibitor with Aβ lowering activity in a transgenic mouse model of Alzheimer’s disease
作者:C.V.C. Prasad、Ming Zheng、Shikha Vig、Carl Bergstrom、David W. Smith、Qi Gao、Suresh Yeola、Craig T. Polson、Jason A. Corsa、Valerie L. Guss、Alice Loo、Jian Wang、Bogdan G. Sleczka、Charles Dangler、Barbara J. Robertson、Joseph P. Hendrick、Susan B. Roberts、Donna M. Barten
DOI:10.1016/j.bmcl.2007.04.082
日期:2007.7
We report on the design of benzodiazepin ones as peptidomimetics at the carboxy terminus of hydroxyamides. structure-activity relationships of diazepinones were investigated and orally active gamma-secretase inhibitors were synthesized. Active metabolites contributing to AP reduction were identified by analysis of plasma samples from Tg2576 mice. In particular, (S)-2-((S)-2-(3,5-difluorophenyl)-2-hydroxyacetamido)-N-((S,Z)-3-methyl-4-oxo-4,5-dihydro-3H-benzo[d][1,2]diazepin-5-yl)propanamide (BMS-433796) was identified with an acceptable pharmacodynamic and pharmacokinetic profile. Chronic dosing of BMS-433796 in Tg2576 mice suggested a narrow therapeutic window and Notch-mediated toxicity at higher doses. (C) 2007 Elsevier Ltd. All rights reserved.