作者:Peter Wipf、Zhiyong Wang
DOI:10.1021/ol070415q
日期:2007.4.1
see text] The N14-desacetoxy analogue of tubulysin H was prepared in 20 steps and 2.1% overall yield. Our strategy features a thiazole anion addition to assemble the tubuvaline residue at the C(10)-C(11) bond, as well as acylations at N5, N14, and N17. This iterative coupling approach, as well as the removal of the labile N,O-acetal at N14, enables the synthesis of analogues for detailed studies of structure-activity
[反应:见正文]分20步制备了微管蛋白溶素H的N14-去乙酰氧基类似物,总产率为2.1%。我们的策略的特点是添加噻唑阴离子,以在C(10)-C(11)键处组装微管缬氨酸残基,以及在N5,N14和N17处进行酰化反应。这种迭代偶联方法,以及在N14处去除不稳定的N,O-乙缩醛,使得能够合成类似物,以详细研究该有效的微管蛋白破坏剂家族中的结构活性关系。