Discovery of 2-(4-Chloro-3-(trifluoromethyl)phenyl)-<i>N</i>-(4-((6,7-dimethoxyquinolin-4-yl)oxy)phenyl)acetamide (CHMFL-KIT-64) as a Novel Orally Available Potent Inhibitor against Broad-Spectrum Mutants of c-KIT Kinase for Gastrointestinal Stromal Tumors
作者:Yun Wu、Beilei Wang、Junjie Wang、Shuang Qi、Fengming Zou、Ziping Qi、Feiyang Liu、Qingwang Liu、Cheng Chen、Chen Hu、Zhenquan Hu、Aoli Wang、Li Wang、Wenchao Wang、Tao Ren、Yujiao Cai、Mingfeng Bai、Qingsong Liu、Jing Liu
DOI:10.1021/acs.jmedchem.9b00280
日期:2019.7.11
Starting from our previously developed c-KIT kinase inhibitor CHMFL-KIT-8140, through a type II kinase inhibitor binding element hybrid design approach, we discovered a novel c-KIT kinase inhibitor compound 18 (CHMFL-KIT-64), which is potent against c-KIT wt and a broad spectrum of drug-resistant mutants with improved bioavailability. 18 exhibits single-digit nM potency against c-KIT kinase and c-KIT
从我们先前开发的c-KIT激酶抑制剂CHMFL-KIT-8140开始,通过II型激酶抑制剂结合元件杂交设计方法,我们发现了一种新型的c-KIT激酶抑制剂化合物18(CHMFL-KIT-64),对抗c-KIT wt和具有改善的生物利用度的广谱耐药突变体。18在生化分析中显示出对c-KIT激酶和c-KIT T670I突变体的个位数nM效价,并且对近膜域中大多数功能获得性突变,ATP结合口袋中的耐药性突变均显示出极大的效价(V654A除外)和激活循环(D816V除外)。此外,18在不同物种(包括小鼠,大鼠和狗)中表现出良好的体内药代动力学(PK)特性。它还在c-KIT T670I,D820G,和Y823D突变体介导的小鼠模型以及在已知对伊马替尼具有抗性的c-KIT wt患者原代细胞中。结合广泛的临床重要c-KIT突变体的强大活性(具有良好的体内PK /药效学特性18)表明,它可能是胃肠道间质瘤的新潜在治疗候选物。