Discovery of Pyridazinone and Pyrazolo[1,5-<i>a</i>]pyridine Inhibitors of C-Terminal Src Kinase
作者:Daniel P. O’Malley、Vijay Ahuja、Brian Fink、Carolyn Cao、Cindy Wang、Jesse Swanson、Susan Wee、Ashvinikumar V. Gavai、John Tokarski、David Critton、Anthony A. Paiva、Benjamin M. Johnson、Nicolas Szapiel、Dianlin Xie
DOI:10.1021/acsmedchemlett.9b00354
日期:2019.10.10
C-terminal Src kinase (CSK) functions as a negative regulator of T cell activation through inhibitory phosphorylation of LCK, so inhibitors of CSK are of interest as potential immuno-oncology agents. Screening of an internal kinase inhibitor collection identified pyridazinone lead 1, and a series of modifications led to optimized compound 13. Compound 13 showed potent activity in biochemical and cellular
C端Src激酶(CSK)通过LCK的抑制性磷酸化作用,成为T细胞活化的负调节剂,因此CSK抑制剂作为潜在的免疫肿瘤治疗剂受到关注。内部激酶抑制剂集合的筛选确定了哒嗪酮先导1,一系列修饰导致化合物13的优化。化合物13在体外的生化和细胞测定中显示出有效的活性,并显示出增加由T细胞受体信号传导诱导的T细胞增殖的能力。口服给药后,化合物13在小鼠中的暴露时间延长,并在给药后6 h在小鼠脾脏中产生功能性反应(LCK磷酸化水平降低)。