Total synthesis of (−)-dictyostatin, a microtubule-stabilising anticancer macrolide of marine sponge origin
作者:Ian Paterson、Robert Britton、Oscar Delgado、Nicola M. Gardner、Arndt Meyer、Guy J. Naylor、Karine G. Poullennec
DOI:10.1016/j.tet.2010.01.083
日期:2010.8
An efficient convergent synthesis of the anticancer marine macrolide (−)-dictyostatin is described that proceeds in 4.6% yield over 27 steps. Most of the stereocentres were configured using substrate control, making use of a common building block to install the C12–C14 and C20–C22 stereotriads, with a lactate boron aldol reaction employed to construct a C4–C10 β-ketophosphonate as utilised in the pivotal
描述了抗癌海洋大环内酯(-)-dictyostatin的有效收敛合成,在27个步骤中以4.6%的产率进行。大多数立体中心使用底物控制进行配置,利用一个通用构件安装C12–C14和C20–C22立体三元组,并通过乳酸硼醛醇醛反应来构建C4–C10β-酮膦酸酯,如在枢轴中使用的那样。 Still–Gennari HWE与完全精制的C11–C26醛的偶联步骤。引入(2 Z,4 E)-二烯二酸酯后,经过修饰的Yamaguchi大内酯化和脱保护基提供了必要的22元大环内酯。