Discovery of highly potent and selective Bruton’s tyrosine kinase inhibitors: Pyridazinone analogs with improved metabolic stability
作者:Wendy B. Young、James Barbosa、Peter Blomgren、Meire C. Bremer、James J. Crawford、Donna Dambach、Charles Eigenbrot、Steve Gallion、Adam R. Johnson、Jeffrey E. Kropf、Seung H. Lee、Lichuan Liu、Joseph W. Lubach、Jen Macaluso、Pat Maciejewski、Scott A. Mitchell、Daniel F. Ortwine、Julie Di Paolo、Karin Reif、Heleen Scheerens、Aaron Schmitt、Xiaojing Wang、Harvey Wong、Jin-Ming Xiong、Jianjun Xu、Christine Yu、Zhongdong Zhao、Kevin S. Currie
DOI:10.1016/j.bmcl.2015.11.076
日期:2016.1
BTK inhibitor GDC-0834 (1) was found to be rapidly metabolized in human studies, resulting in a suspension of clinical trials. The primary route of metabolism was through cleavage of the acyclic amide bond connecting the terminal tetrahydrobenzothiophene with the central linker aryl ring. SAR studies were focused on reducing metabolic cleavage of this amide, and resulted in the identification of several
发现BTK抑制剂GDC-0834(1)在人体研究中迅速代谢,导致临床试验中止。代谢的主要途径是通过裂解连接末端四氢苯并噻吩与中心接头芳基环的无环酰胺键。SAR研究的重点是减少这种酰胺的代谢裂解,并导致鉴定出几个中央芳基接头取代基,这些取代基可提高稳定性。然后将最有希望的取代的芳基连接基掺入优化的哒嗪酮支架中,从而鉴定出具有增强的效力,代谢稳定性和临床前特性的铅类似物23。