Intramolecular Pyridine Activation−Dearomatization Reaction: Highly Stereoselective Synthesis of Polysubstituted Indolizidines and Quinolizidines
作者:Guillaume Barbe、Guillaume Pelletier、André B. Charette
DOI:10.1021/ol901264f
日期:2009.8.6
An unprecedented intramolecular pyridine activation−asymmetric dearomatization reaction is described. This process produces 5-substituted indolizidines and 6-substituted quinolizidines in excellent yields and in a highly regio- and diastereoselective fashion. Formal syntheses of trans-indolizidine alkaloids are presented along with some preliminary results in the formation of C-5 quaternary centers