Total Syntheses of [17]- and [18]Dehydrodesoxyepothilones B via a Concise Ring-Closing Metathesis-Based Strategy: Correlation of Ring Size with Biological Activity in the Epothilone Series
作者:Alexey Rivkin、Jon T. Njardarson、Kaustav Biswas、Ting-Chao Chou、Samuel J. Danishefsky
DOI:10.1021/jo0204294
日期:2002.11.1
analogues were evaluated for antitumor activity. The results from the in vitro assays revealed that the [17]ddEpoB analogue is highly active against various tumor cell lines with a potency comparable to that of [16]ddEpoB. This is the first example of a 17-membered ring macrolactone epothilone that has retained its antitumor activity. In contrast, the biological data revealed that [18]ddEpoB is significantly
收敛环易位策略已用于高度简洁的10,11-dehydro-13,14- [17] desoxyepothilone B([17] ddEpoB)和10,11-dehydro-14,15- [18]的合成] desoxyepothilone B([18] ddEpoB),是10,11-dehydro-12,13-desoxyepothilone B([16] ddEpoB或epothilone 490)的17和18元环同源物。我们已经证明,闭环复分解(RCM)在产物中所需烯烃的产生中为[17] ddEpoB或[18] ddEpoB提供了高水平的立体控制。评价这些类似物的抗肿瘤活性。体外测定的结果表明,[17] ddEpoB类似物对多种肿瘤细胞系具有很高的活性,效力与[16] ddEpoB相当。这是保留其抗肿瘤活性的17元环大内酯埃博霉素的第一个例子。相反,生物学数据显示[18] ddEpoB的活性明显低于[17]