Substituted 2-arylquinazolinones: Design, synthesis, and evaluation of cytotoxicity and inhibition of topoisomerases
作者:Daulat Bikram Khadka、Giap Huu Tran、Somin Shin、Hang Thi Minh Nguyen、Hue Thi Cao、Chao Zhao、Yifeng Jin、Hue Thi My Van、Minh Van Chau、Youngjoo Kwon、Thanh Nguyen Le、Won-Jea Cho
DOI:10.1016/j.ejmech.2015.08.040
日期:2015.10
2-Arylquinzolinones with various substitutions on the aromatic rings were obtained by thermal cyclodehydration/dehydrogenation on reacting anthranilamides and benzaldehydes. The compounds had superior topo I-inhibitory activities but were generally inactive against topo IIα. Among the 6-methyl-, 6-amino-, and 7-methylquinazolinones, 6-amino-substituted derivatives displayed potent cytotoxicity at submicromolar
设计和合成了一系列与已知的3-芳基异喹啉具有结构同源性的2-芳基喹唑啉酮,以开发靶向拓扑异构酶(topos)的安全,有效和选择性的细胞毒剂。通过使邻氨基苯甲酰胺和苯甲醛反应进行热环脱水/脱氢,获得在芳环上具有各种取代基的2-芳基喹唑啉酮。该化合物具有优异的topo I抑制活性,但通常对topoIIα无活性。在6-甲基,6-氨基-和7-甲基喹唑啉酮中,6-氨基取代的衍生物在亚微摩尔至纳摩尔浓度下对人结肠直肠腺癌细胞(HCT-15),人导管乳腺上皮肿瘤细胞(T47D)表现出强大的细胞毒性。 )和子宫颈癌细胞(HeLa)。在topo I抑制和6-氨基喹唑啉酮的细胞毒性作用之间存在良好的相关性。对接模型表明,这些化合物对topo I的抑制作用是由于与酶位点的DNA碱基和氨基酸残基发生嵌入和H键相互作用。