Potent, non-covalent reversible BTK inhibitors with 8-amino-imidazo[1,5-a]pyrazine core featuring 3-position bicyclic ring substitutes
作者:Jian Liu、Deodial Guiadeen、Arto Krikorian、Xiaolei Gao、James Wang、Sobhana Babu Boga、Abdul-Basit Alhassan、Wensheng Yu、Oleg Selyutin、Younong Yu、Rajan Anand、Jiayi Xu、Joseph Kelly、Joseph L. Duffy、Shilan Liu、Chundao Yang、Hao Wu、Jiaqiang Cai、Chad Bennett、Kevin M. Maloney、Sriram Tyagarajan、Ying-Duo Gao、Thierry O. Fischmann、Jeremy Presland、My Mansueto、Zangwei Xu、Erica Leccese、Jie Zhang-Hoover、Ian Knemeyer、Charles G. Garlisi、Peter Stivers、Philip E. Brandish、Alexandra Hicks、Ronald Kim、Joseph A. Kozlowski
DOI:10.1016/j.bmcl.2020.127390
日期:2020.9
Bruton's tyrosine kinase (BTK) is a Tec family kinase with a well-defined role in the B cell receptor (BCR) pathway. It has become an attractive kinase target for selective B cell inhibition, and for the treatment of B cell related diseases. Many BTK inhibitors have been discovered for the treatment of cancer and rheumatoid arthritis, including a series of BTK inhibitors based on 8-amino-imidazo[1,5-a]pyrazine we recently reported. The X-ray crystal structures of BTK with inhibitors were also published, which provided great help for the SAR design. Here we report our SAR work introducing ring constraints for the 3-position piperidine amides on the BTK inhibitors based on 8-amino-imidazo[1,5-a]pyrazine. This modification improved the potency in BTK inhibitions, as well as the PK profile and the off-target selectivity. The dose-dependent efficacy of two BTK inhibitors was observed in the rat collagen induced arthritis (CIA) model.