A Concise Synthesis of Pyrazole Analogues of Combretastatin A1 as Potent Anti-Tubulin Agents
作者:Roberta Zaninetti、Salvatore V. Cortese、Silvio Aprile、Alberto Massarotti、Pier Luigi Canonico、Giovanni Sorba、Giorgio Grosa、Armando A. Genazzani、Tracey Pirali
DOI:10.1002/cmdc.201200561
日期:2013.4
the colchicine binding site of tubulin and inhibits polymerization. As such, it is both an antitumor agent and a vascular disrupting agent. It has been shown to be at least tenfold more potent than combretastatin A4 (CA4) in terms of vascular shutdown, which correlates with its metabolism to reactive ortho‐quinone species that are assumed to be directly cytotoxic in tumor cells. A series of 3,4‐diarylpyrazoles
Combretastatin A1(CA1)在微管蛋白的秋水仙碱结合位点结合至β-亚基,并抑制聚合。因此,它既是抗肿瘤剂又是血管破坏剂。就血管停药而言,它的效力至少比康培他汀A4(CA4)高十倍,这与其代谢成反应性邻醌的代谢有关,后者被认为直接在肿瘤细胞中具有细胞毒性。简明扼要地合成了3,4-二芳基吡唑系列,其中一个是3-甲氧基-6- [4-(3,4,5-三甲氧基苯基)-1 H-吡唑-3-基]苯-1,2-二醇(27)被证明是具有低纳摩尔浓度的细胞毒性抗微管蛋白剂。我们还报告了康普他汀类药物,包括CA1,CA4和27对间皮瘤细胞系有效,因此具有重要的临床前景。代谢实验表明,27种化合物保留形成邻醌类化合物的能力,而吡唑环则显示出较高的代谢稳定性,这表明该化合物可能比CA1型具有更好的药代动力学特征,具有相似的药效特性和临床潜力。