Discovery of novel triazolobenzazepinones as γ-secretase modulators with central Aβ42 lowering in rodents and rhesus monkeys
作者:Christian Fischer、Susan L. Zultanski、Hua Zhou、Joey L. Methot、Sanjiv Shah、Ikuo Hayashi、Bethany L. Hughes、Christopher M. Moxham、Nathan W. Bays、Nadya Smotrov、Armetta D. Hill、Bo-Sheng Pan、Zhenhua Wu、Lily Y. Moy、Flobert Tanga、Candia Kenific、Jonathan C. Cruz、Deborah Walker、Melanie Bouthillette、George N. Nikov、Sujal V. Deshmukh、Valentina V. Jeliazkova-Mecheva、Damaris Diaz、Maria S. Michener、Jacquelynn J. Cook、Benito Munoz、Mark S. Shearman
DOI:10.1016/j.bmcl.2015.07.003
日期:2015.9
Synthesis and SAR studies of novel triazolobenzazepinones as gamma secretase modulators (GSMs) are presented in this communication. Starting from our azepinone leads, optimization studies toward improving central lowering of A beta 42 led to the discovery of novel benzo-fused azepinones. Several benzazepinones were profiled in vivo and found to lower brain A beta 42 levels in Sprague Dawley rats and transgenic APP-YAC mice in a dose-dependent manner after a single oral dose. Compound 34 was further progressed into a pilot study in our cisterna-magna-ported rhesus monkey model, where we observed robust lowering of CSF A beta 42 levels. (C) 2015 Elsevier Ltd. All rights reserved.