Studies toward the Synthesis of (+)-Palustrine: The First Asymmetric Synthesis of (−)-Methyl Palustramate
作者:Steven R. Angle、Robert M. Henry
DOI:10.1021/jo980749g
日期:1998.10.1
(+)-palustrine, is described. The key step of the synthesis is a conformationally restricted Claisenrearrangement to afford the highly functionalized 1-benzylpipecolic ester 10. In addition, a new procedure for debenzylation of 1-benzylpiperidines (Li, (NH(2)CH(2))(2), Et(3)N, THF) was used to remove the benzyl protecting group where traditional methods failed.