Design, Synthesis, and Biological Evaluation of Novel Pyridine-Bridged Analogues of Combretastatin-A4 as Anticancer Agents
作者:Shilong Zheng、Qiu Zhong、Madhusoodanan Mottamal、Qiang Zhang、Changde Zhang、Elise LeMelle、Harris McFerrin、Guangdi Wang
DOI:10.1021/jm500002k
日期:2014.4.24
A series of novel pyridine-bridged analogues of combretastatin-A4 (CA-4) were designed and synthesized. As expected, the 4-atom linker configuration retained little cytotoxicities in the compounds 2e, 3e, 3g, and 4i. Activities of the analogues with 3-atom linker varied widely depending on the phenyl ring substitutions, and the 3-atom linker containing nitrogen represents the more favorable linker
设计并合成了一系列新型吡啶桥连的考布他汀-A4 (CA-4) 类似物。正如预期的那样,4 原子接头构型在化合物2e、3e、3g和4i 中几乎没有细胞毒性。具有 3 原子接头的类似物的活性因苯环取代而有很大差异,含氮的 3 原子接头代表更有利的接头结构。其中,三种类似物(4h、4s和4t)以与 CA-4 相当的方式在体内有效抑制细胞存活和生长、阻止细胞周期并阻断血管生成和脉管系统形成。叠加4H和微管蛋白的秋水仙碱结合口袋中的4s显示 CA- 4、4h和4s的结合姿势是相似的,正如竞争性结合试验所证实的,其中测量了配体替代微管蛋白结合的秋水仙碱的能力。结合数据与观察到的抗增殖和抑制血管生成的生物活性一致,但不能预测它们的抗微管蛋白聚合活性。