Discovery of a Novel Class of Exquisitely Selective Mesenchymal-Epithelial Transition Factor (c-MET) Protein Kinase Inhibitors and Identification of the Clinical Candidate 2-(4-(1-(Quinolin-6-ylmethyl)-1<i>H</i>-[1,2,3]triazolo[4,5-<i>b</i>]pyrazin-6-yl)-1<i>H</i>-pyrazol-1-yl)ethanol (PF-04217903) for the Treatment of Cancer
作者:J. Jean Cui、Michele McTigue、Mitchell Nambu、Michelle Tran-Dubé、Mason Pairish、Hong Shen、Lei Jia、Hengmiao Cheng、Jacqui Hoffman、Phuong Le、Mehran Jalaie、Gilles H. Goetz、Kevin Ryan、Neil Grodsky、Ya-li Deng、Max Parker、Sergei Timofeevski、Brion W. Murray、Shinji Yamazaki、Shirley Aguirre、Qiuhua Li、Helen Zou、James Christensen
DOI:10.1021/jm300967g
日期:2012.9.27
The cocrystal structure of the related oxindole hydrazide c-MET inhibitor 10 with a nonphosphorylated c-MET kinase domain revealed a unique binding mode associated with the exquisite selectivity profile. The chemically labile oxindole hydrazide scaffold was replaced with a chemically and metabolically stable triazolopyrazine scaffold using structure based drug design. Medicinal chemistry lead optimization
c-MET受体酪氨酸激酶因其在人类肿瘤发生和肿瘤进展中的关键作用而成为有吸引力的肿瘤学靶标。在c-MET HTS运动期间发现了羟吲哚酰肼第6点,随后证明对多种其他激酶具有不同寻常的选择性。相关的羟吲哚酰肼c-MET抑制剂10与非磷酸化的c-MET激酶结构域的共晶体结构揭示了与精美的选择性谱相关的独特结合模式。使用基于结构的药物设计,将化学不稳定的羟吲哚酰肼支架替换为化学和代谢稳定的三唑并吡嗪支架。药物化学先导物优化产生的2-(4-(1-(喹啉-6-基甲基)-1 ħ-[1,2,3]三唑并[4,5 - b ]吡嗪-6-基)-1 H-吡唑-1-基)乙醇(2,PF-04217903),一种非常有效且选择性极强的c-MET抑制剂。图2证明了在c-MET依赖性肿瘤模型中具有良好的口服PK特性和在临床前研究中可接受的安全性,有效地抑制了肿瘤生长。2进入了I期肿瘤学环境的临床评估。