Enantioselective Synthesis of Caprolactam and Enone Precursors to the Heterocyclic DEFG Ring System of Zoanthenol
作者:Jeffrey T. Bagdanoff、Douglas C. Behenna、Jennifer L. Stockdill、Brian M. Stoltz
DOI:10.1002/ejoc.201600223
日期:2016.4
The enantioselective synthesis of both caprolactam and enone synthons for the DEFG ring system of zoanthenol are described. The evolution of this synthetic approach proceeds first through a synthesis using the chiral pool as a starting point. Challenges in protecting group strategy led to the modification of this approach beginning with (±)-glycidol. Ultimately, an efficient approach was developed
描述了动物醇 DEFG 环系统的己内酰胺和烯酮合成子的对映选择性合成。这种合成方法的演变首先通过使用手性池作为起点进行合成。保护基团策略的挑战导致从(±)-缩水甘油开始对该方法进行修改。最终,通过采用不对称杂狄尔斯-阿尔德反应开发了一种有效的方法。己内酰胺结构单元可以通过有趣的选择性格氏加成反应转化为相应的烯酮合成子。添加模型炔烃为在己内酰胺结构单元中后期添加受阻炔烃提供了支持。