作者:Shoma Mizutani、Kenta Komori、Chiharu Kai、Kouji Kuramochi、Kazunori Tsubaki
DOI:10.1016/j.tet.2016.08.080
日期:2016.10
Previously, our group reported the first synthesis of (±)-berkeleyamide D, optical resolution of both enantiomers, and determination of their absolute configuration. The synthesis provided (±)-berkeleyamide D in a total of eight steps from commercially available materials. However, the synthesis included an inefficient acylation for the construction of the spirocyclic system, resulting in an overall
以前,我们的小组报道了(±)-伯来酰胺D的首次合成,两种对映异构体的旋光拆分及其绝对构型的确定。该合成从商购可得的材料以总共八步提供了(±)-伯来酰胺D。但是,合成过程中螺环系统的酰化效率低下,总收率仅为2.8%。本文报道了第二代(±)-伯来酰胺D的合成方法。本合成提供了(±)-伯来酰胺D,而没有问题的酰化步骤。该合成需要10个步骤,并从市售起始原料中以11%的总产率进行。