作者:Francisco Sarabia、Francisca Martín-Gálvez、Samy Chammaa、Laura Martín-Ortiz、Antonio Sánchez-Ruiz
DOI:10.1021/jo100696w
日期:2010.8.20
laboratories has been employed for the stereoselective synthesis of bengamide E (16) and analogues at the terminal olefinic position. In the event, the chiral sulfonium salt 30 was transformed into its corresponding sulfur ylide and reacted with aldehydes 21 and 44 to efficiently provide epoxy amides 31 and 45, respectively. To access the bengamides from these epoxy amides, we combined a synthetic strategy
在我们实验室中开发的一种新的不对称环氧化合成方法已经用于在末端烯烃位置上的苯甲酰胺E(16)和类似物的立体选择性合成。在这种情况下,手性sulf盐30被转化为其相应的硫叶立德,并与醛21和44反应以分别有效地提供环氧酰胺31和45。为了从这些环氧酰胺中获得苯甲酰胺,我们结合了我们先前报道的合成策略,使用烯烃交叉复分解反应在酰胺33的末端烯烃位置引入各种烷基取代基,与酰胺49的钯(Negishi或Suzuki偶联)介导的反应有关。后一种引入烷基的途径被证明比复分解方法更有效,并且允许获得各种各样的新的苯甲酰胺类似物。