Discovery of Pyrazolo[1,5-<i>a</i>]pyrimidine TTK Inhibitors: CFI-402257 is a Potent, Selective, Bioavailable Anticancer Agent
作者:Yong Liu、Radoslaw Laufer、Narendra Kumar Patel、Grace Ng、Peter B. Sampson、Sze-Wan Li、Yunhui Lang、Miklos Feher、Richard Brokx、Irina Beletskaya、Richard Hodgson、Olga Plotnikova、Donald E. Awrey、Wei Qiu、Nickolay Y. Chirgadze、Jacqueline M. Mason、Xin Wei、Dan Chi-Chia Lin、Yi Che、Reza Kiarash、Graham C. Fletcher、Tak W. Mak、Mark R. Bray、Henry W. Pauls
DOI:10.1021/acsmedchemlett.5b00485
日期:2016.7.14
This work describes a scaffold hopping exercise that begins with known imidazo[1,2-a]pyrazines, briefly explores pyrazolo[1,5-a][1,3,5]triazines, and ultimately yields pyrazolo[1,5-a]pyrimidines as a novel class of potent TTK inhibitors. An X-ray structure of a representative compound is consistent with 1(1)/2 type inhibition and provides structural insight to aid subsequent optimization of in vitro
这项工作描述了从已知的咪唑并[1,2-a]吡嗪开始的支架跳跃运动,简要地探索了吡唑并[1,5-a] [1,3,5]三嗪,最终产生了吡唑并[1,5-a ]嘧啶类作为一类新型的强效TTK抑制剂。代表性化合物的X射线结构与1(1)/ 2类型抑制作用一致,并提供结构见解,以帮助后续优化体外活性以及理化和药代动力学特性。在疏水和溶剂可及区域中引入极性部分可调节物理化学性质,同时保持效力。鉴定出具有增加的口服暴露的化合物用于异种移植研究。这项工作最终确定了一种有效的(TTK K i = 0.1 nM),高选择性,口服生物利用度高的抗癌药物(CFI-402257),用于IND使能研究。