Design, synthesis, biological evaluation and molecular modeling of novel 2-amino-4-(1-phenylethoxy) pyridine derivatives as potential ROS1 inhibitors
作者:Yuanxin Tian、Tingting Zhang、Lifan Long、Zhonghuang Li、Shanhe Wan、Guangfa Wang、Yonghuan Yu、Ju Hou、Xiaoyun Wu、Jiajie Zhang
DOI:10.1016/j.ejmech.2017.11.002
日期:2018.1
3 μM, respectively. Moreover, molecular docking and molecular dynamics simulation studies disclosed that compound 14c and 13d shared similar binding poses with Crizotinib except the selective binding site of ROS1. It also gave a probable molecular explanation for their activity and selectivity, which the methoxyl group in benzene ring was the crucial to the selectivity to ROS1 versus ALK.
为了发现靶向ROS1激酶的潜在抑制剂和选择性抑制剂,我们合理设计,合成和评估了两个在C-3和C-4位置带有1-苯基乙氧基的新型2-氨基吡啶衍生物。酶促测定结果表明,新化合物13b - 13d和14a - 14c中的六个对ROS1激酶显示出明显更高的抑制活性。最有前途的化合物13d和14c表现出最理想的ROS1抑制活性,IC 50值分别为440 nM和370 nM。此外,13d和14c相对于在激酶结构域中共享约49%氨基酸序列同源性的ALK,ROS1的ROS1抑制选择性约为7倍和12倍。他们还显示出对ROS1诱导的HCC78细胞系的良好抗增殖作用,IC 50值分别为8.1μM和65.3μM 。此外,分子对接和分子动力学模拟研究表明,除了ROS1的选择性结合位点外,化合物14c和13d与克唑替尼具有相似的结合姿势。它还为它们的活性和选择性提供了可能的分子解释,其中苯环中的甲氧基是对ROS1相对于ALK的选择性的关键。