efforts across industry and academia. The KRASG12C mutant represents an "Achilles heel" and has recently yielded to covalent targeting with small molecules that bind the mutant cysteine and create an allosteric pocket on GDP-bound RAS, locking it in an inactive state. A weak inhibitor at this site was optimized through conformational locking of a piperazine-quinazoline motif and linker modification
尽管工业界和学术界做出了许多努力,但直接为重要的癌
基因KRAS服药的尝试取得了有限的成功。KRASG12C突变体代表“致命弱点”,最近已与小分子共价靶向,这些小分子与突变体半胱
氨酸结合并在GDP结合的RAS上形成一个变构口袋,从而将其锁定在非活性状态。通过
哌嗪-
喹唑啉基序的构象锁定和接头修饰优化了该位点的弱
抑制剂。随后在
哌嗪中引入关键甲基会导致效力,通透性,清除率和反应性增强,从而鉴定出具有高选择性,出色的跨物种药代动力学参数和体内功效的有效KRASG12C
抑制剂。