Structure-based discovery of C-2 substituted imidazo-pyrrolopyridine JAK1 inhibitors with improved selectivity over JAK2
作者:Sharada Labadie、Peter S. Dragovich、Kathy Barrett、Wade S. Blair、Philippe Bergeron、Christine Chang、Gauri Deshmukh、Charles Eigenbrot、Nico Ghilardi、Paul Gibbons、Christopher A. Hurley、Adam Johnson、Jane R. Kenny、Pawan Bir Kohli、Janusz J. Kulagowski、Marya Liimatta、Patrick J. Lupardus、Rohan Mendonca、Jeremy M. Murray、Rebecca Pulk、Steven Shia、Micah Steffek、Savita Ubhayakar、Mark Ultsch、Anne van Abbema、Stuart Ward、Mark Zak
DOI:10.1016/j.bmcl.2012.10.008
日期:2012.12
Herein we describe our successful efforts in obtaining C-2 substituted imidazo-pyrrolopyridines with improved JAK1 selectivity relative to JAK2 by targeting an amino acid residue that differs between the two isoforms (JAK1: E966; JAK2: D939). Efforts to improve cellular potency by reducing the polarity of the inhibitors are also detailed. The X-ray crystal structure of a representative inhibitor in complex with the JAK1 enzyme is also disclosed. (C) 2012 Elsevier Ltd. All rights reserved.