作者:H. Marlon Zhong、Jeong-Hun Sohn、Viresh H. Rawal
DOI:10.1021/jo0615145
日期:2007.1.1
Described herein is the asymmetric synthesis of a functionalized, trioxadecalin unit that comprises the right-hand part of the mycalamides and related natural products. The synthetic route involves a 16-step sequence that accomplishes the formation of two heterocyclic rings and the generation of five stereocenters. The synthesis commenced with a C2-symmetric starting material, diethyl d-tartrate, and
本文描述的是官能化的三氧杂tri呤单元的不对称合成,该单元包含mycalamides和相关天然产物的右手部分。合成路线涉及一个16个步骤的序列,该序列完成了两个杂环的形成以及五个立体中心的生成。合成具有C 2 -对称的起始材料开始,二乙d -酒石酸盐,和非对映选择性了反应的中继来扩展这个四碳链和引入新的手性中心的优点。随后的亲电试剂介导的环化作用提供了所需的吡喃环,然后将其转化为所需的功能化的三氧杂环丁烷骨架。