Synthesis and Bioevaluation of 3,6-Diaryl-[1,2,4]triazolo[4,3-<i>b</i>] Pyridazines as Antitubulin Agents
作者:Qile Xu、Yueting Wang、Jingwen Xu、Maolin Sun、Haiqiu Tian、Daiying Zuo、Qi Guan、Kai Bao、Yingliang Wu、Weige Zhang
DOI:10.1021/acsmedchemlett.6b00252
日期:2016.12.8
A series of 3,6-diaryl-[1,2,4]triazolo[4,3-b]pyridazines were designed as a class of vinylogous CA-4 analogues. The easily isomerized (Z,E)-butadiene linker of vinylogous CA-4 was replaced by a rigid [1,2,4]triazolo[4,3-b]pyridazine scaffold. Twenty-one target compounds were synthesized and exhibited moderate to potent antiproliferative activity. The compound 4q with a 3-amino-4-methoxyphenyl moiety
一系列3,6-二芳基-[1,2,4]三唑并[4,3- b ]哒嗪被设计为一类乙烯基CA-4类似物。乙烯基CA-4的易于异构化的(Z,E)-丁二烯连接基被刚性的[1,2,4]三唑并[4,3- b ]哒嗪支架取代。合成了二十一种目标化合物,它们具有中等至有效的抗增殖活性。与CA-4(IC 50 = 0.009–0.012μM)相比,具有3-氨基-4-甲氧基苯基部分作为B环的化合物4q显示出对SGC-7901,A549和HT-的高活性抗增殖活性具有IC 50的1080个细胞系值分别为0.014、0.008和0.012μM。微管蛋白聚合实验表明,4q有效抑制微管蛋白聚合,免疫染色测定表明4q显着破坏微管蛋白微管动力学。此外,细胞周期研究表明,化合物4q在A549细胞的G2 / M期显着阻止了细胞周期进程。分子模型研究表明4q可以与微管上的秋水仙碱结合位点结合。