Synthesis and biological evaluation of fluorescently labeled epothilone analogs for tubulin binding studies
作者:Thota Ganesh、Jennifer K Schilling、Radha K Palakodety、Rudravajhala Ravindra、Natasha Shanker、Susan Bane、David G.I Kingston
DOI:10.1016/j.tet.2003.10.024
日期:2003.12
The two fluorescently labeled epothilones 14 and 15 have been synthesized using a modification of Nicolaou's macrolactonization and Stille coupling strategy. The cytotoxicities of the compounds were 6.1 and 2.7 μg/mL, respectively, against the A2870 ovarian cancer cell line, and 0.5 and 1.0 μg/mL, respectively, against the PC-3 prostate cancer cell line. The critical concentration of tubulin was 0
这两个荧光标记的埃坡霉素14和15是使用Nicolaou的大内酯化和Stille偶联策略的改进方法合成的。该化合物对A2870卵巢癌细胞系的细胞毒性分别为6.1和2.7μg/ mL,对PC-3前列腺癌细胞系的细胞毒性分别为0.5和1.0μg/ mL。在14和15的存在下,微管蛋白的临界浓度分别为0.5和1.0μM ,而紫杉醇的临界浓度为0.3μM。描述了溶液中与微管结合的两个分子的荧光特性。