Discovery of a series of novel 5H-pyrrolo[2,3-b]pyrazine-2-phenyl ethers, as potent JAK3 kinase inhibitors
作者:Saul Jaime-Figueroa、Javier De Vicente、Johannes Hermann、Alam Jahangir、Sue Jin、Andreas Kuglstatter、Stephen M. Lynch、John Menke、Linghao Niu、Vaishali Patel、Ada Shao、Michael Soth、Minh Diem Vu、Calvin Yee
DOI:10.1016/j.bmcl.2013.03.015
日期:2013.5
We report the discovery of a novel series of ATP-competitive Janus kinase 3 (JAK3) inhibitors based on the 5H-pyrrolo[2,3-b]pyrazine scaffold. The initial leads in this series, compounds 1a and 1h, showed promising potencies, but a lack of selectivity against other isoforms in the JAK family. Computational and crystallographic analysis suggested that the phenyl ether moiety possessed a favorable vector to achieve selectivity. Exploration of this vector resulted in the identification of 12b and 12d, as potent JAK3 inhibitors, demonstrating improved JAK family and kinase selectivity. (C) 2013 Elsevier Ltd. All rights reserved.