Total Synthesis and Antitumor Activity of 12,13-Desoxyepothilone F: An Unexpected Solvolysis Problem at C15, Mediated by Remote Substitution at C21
作者:Chul Bom Lee、Ting-Chao Chou、Xiu-Guo Zhang、Zhi-Guang Wang、Scott D. Kuduk、Mark D. Chappell、Shawn J. Stachel、Samuel J. Danishefsky
DOI:10.1021/jo000617z
日期:2000.10.1
A new epothilone analogue, 12,13-desoxyepothilone F (dEpoF, 21-hydroxy-12,13-desoxyepothilone B, 21-hydroxyepothilone D), was synthesized and evaluated for antitumor potential. A convergent strategy employed for the semipractical synthesis of 12,13-desoxyepothilone B (dEpoB) has been utilized to yield an amount of dEpoF sufficient for relevant biological studies. The results from an in vitro assay
合成了新的埃博霉素类似物12,13-脱氧埃博霉素F(dEpoF,21-羟基-12,13-脱氧埃博霉素B,21-羟基埃博霉素D),并评估了其抗肿瘤潜力。用于12,13-脱氧埃博霉素B(dEpoB)的半实用合成的收敛策略已被用来产生足够的dEpoF量用于相关的生物学研究。体外测定的结果表明,这种新的类似物对各种肿瘤细胞系具有很高的活性,其功效与dEpoB相当。特别地,在紫杉醇(Taxol)基本上无效的浓度下,dEpoF抑制了抗性肿瘤细胞的生长。对其体内活性的初步评估也是有希望的。新的类似物在C21处含有一个额外的羟基,