Synthesis, biological evaluation and molecular modeling of imidazo[1,2-a]pyridine derivatives as potent antitubulin agents
作者:Jin Liu、Daiying Zuo、Tongfei Jing、Ming Guo、Lingyun Xing、Wenyu Zhang、Jianwen Zhao、Jiwei Shen、Ping Gong、Dajun Zhang、Xin Zhai
DOI:10.1016/j.bmc.2017.05.057
日期:2017.8
Two series of novel 5,7-diarylimidazo[1,2-a]pyridine-8-carbonitrile derivatives (3a–3q and 7a–7n) were designed by modification of CA-4 pharmacophore to develop colchicine targeted antitubulin agents. All compounds were efficiently synthesized and evaluated for their cytotoxicity against five selected cancer cell lines (HT-29, H460, A549, MKN-45 and SMMC-7721) which got an insight in structure and
通过修饰CA-4药效团设计了两个系列的新型5,7-二芳基咪唑并[1,2- a ]吡啶-8-腈衍生物(3a - 3q和7a - 7n)以开发秋水仙碱靶向的抗微管蛋白药物。有效地合成了所有化合物,并评估了它们对五种选定的癌细胞系(HT-29,H460,A549,MKN-45和SMMC-7721)的细胞毒性,从而了解了结构和活性关系(SAR)。据报道,几种分子(7e,7f,7h – 7j和7m)对IC 50表现出有希望的抗增殖活性值以两位数纳摩尔度表示。对这些化合物的优化导致发现了有前途的7e铅,该铅具有显着的效价,IC 50值比CA-4和Crolibulin高0.01至3.2 µM。重要的是,免疫荧光染色和秋水仙碱竞争性结合试验表明,微管动力学被微管蛋白的秋水仙碱位点结合而被7e破坏。此外,分子对接研究表明,该模拟物在秋水仙碱结合位点的结合与Crolibulin相似,这与这些化合物的SAR一致。