Design, synthesis and biological evaluation of 6-(nitroimidazole-1H-alkyloxyl)-4-anilinoquinazolines as efficient EGFR inhibitors exerting cytotoxic effects both under normoxia and hypoxia
作者:Weiyan Cheng、Shijun Zhu、Xiaodong Ma、Ni Qiu、Peng Peng、Rong Sheng、Yongzhou Hu
DOI:10.1016/j.ejmech.2014.11.010
日期:2015.1
A series of novel 6-(nitroimidazole-1H-alkyloxyl)-4-anilinoquinazoline derivatives (15a–15r) were designed, synthesized and evaluated as efficient EGFR inhibitors through introduction of hypoxia activated nitroimidazole moiety into the quinazoline scaffold of EGFR inhibitors. The majority of these newly synthesized compounds exhibited comparable EGFR inhibitory activities to gefitinib and moderate
通过将低氧活化的硝基咪唑基团引入EGFR抑制剂的喹唑啉骨架中,设计,合成和评估了一系列新型的6-(硝基咪唑-1 H-烷氧基)-4-苯胺基喹唑啉衍生物(15a – 15r),并将其评估为有效的EGFR抑制剂。这些新合成的化合物中的大多数在常氧和低氧条件下对吉非替尼表现出可比的EGFR抑制活性,对HT-29细胞具有中等至优异的抗增殖活性。最有前途的化合物15c中所显示的IC 50 0.47 nM的针对EGFR的激酶值和优异的细胞毒性作用对HT-29细胞在含氧量正常和低氧与IC 50值分别为2.21μM和1.62μM。模拟还原激活研究表明,化合物15c在缺氧条件下具有还原激活特性,这与体外代谢研究一致,在体外代谢研究中,15c在缺氧条件下易于还原激活,在常氧条件下稳定性更高。所有这些结果表明15c在常氧和低氧下都是潜在的癌症治疗剂,值得进一步开发。