Pyrazole–oxadiazole conjugates: synthesis, antiproliferative activity and inhibition of tubulin polymerization
作者:Ahmed Kamal、Anver Basha Shaik、Sowjanya Polepalli、Vangala Santosh Reddy、G. Bharath Kumar、Soma Gupta、K. V. S. Rama Krishna、Ananthamurthy Nagabhushana、Rakesh K. Mishra、Nishant Jain
DOI:10.1039/c4ob01152j
日期:——
4-(methylenedioxy) substituent on their A rings. Among these conjugates, 11a, 11d and 11f manifest potent cytotoxicity with IC50 values ranging from 1.5 μM to 11.2 μM and inhibit tubulin polymerization with IC50 values of 1.3 μM, 3.9 μM and 2.4 μM respectively. The cell cycle assay showed that treatment with these conjugates results in accumulation of cells in the G2/M phase and disrupts the microtubule network
合成了许多吡唑-恶二唑偶联物,并评估了它们在各种人类癌细胞系中作为抗增殖剂的能力。这些缀合物由彼此紧密连接的吡唑和恶二唑支架组成,没有任何间隔子作为两个结构类别。I类具有三甲氧基取代基,II类具有在其A环上的3,4-(亚甲基二氧基)取代基。在这些结合物中,11a,11d和11f表现出强的细胞毒性,IC 50值为1.5μM至11.2μM,并抑制微管蛋白的IC 50聚合分别为1.3μM,3.9μM和2.4μM。细胞周期分析表明,用这些缀合物处理会导致细胞在G2 / M期积累,并破坏微管网络。斑马鱼胚胎的阐明表明,缀合物导致发育缺陷。分子对接模拟确定了这些有效结合物在微管蛋白秋水仙碱位点的结合模式。