Identification of novel 4-anilinoquinazoline derivatives as potent EGFR inhibitors both under normoxia and hypoxia
作者:Weiyan Cheng、Youting Yuan、Ni Qiu、Peng Peng、Rong Sheng、Yongzhou Hu
DOI:10.1016/j.bmc.2014.10.038
日期:2014.12
A novel series of 4-anilinoquinazoline derivatives (19a–19t) were designed and synthesized through incorporation of the 2-nitroimidazole moiety into the 4-anilinoquinazoline scaffold of EGFR inhibitors. The most promising compound 19h displayed potent EGFR inhibitory activity with the IC50 value of 0.47 nM. It also strongly suppressed the proliferation of A549 and HT-29 cells with sub-micromolar IC50
通过将2-硝基咪唑部分掺入EGFR抑制剂的4-苯胺基喹唑啉骨架中,设计并合成了一系列新型的4-苯胺基喹唑啉衍生物(19a – 19t)。最有前途的化合物19h显示出有效的EGFR抑制活性,IC 50值为0.47 nM。它在常氧和低氧下均具有亚微摩尔IC 50值,从而强烈地抑制了A549和HT-29细胞的增殖,这比吉非替尼和厄洛替尼的效力强几倍。进一步的还原模拟研究表明19h可以在缺氧条件下被还原激活,并且与细胞凋亡测定和体外代谢评估的结果完全一致。我们的结果表明,将低氧激活部分掺入EGFR抑制剂支架中可能是克服肿瘤低氧的一种易处理的策略。