Asymmetric synthesis of 3,5-disubstituted indolizidines by intermolecular addition of an allylsilane on an N-acyliminium ion
作者:Elisabeth Conchon、Yvonne Gelas-Mialhe、Roland Remuson
DOI:10.1016/j.tetasy.2006.04.027
日期:2006.4
A diastereoselective synthesis of 3,5-disubstituted indolizidines based on an intermolecular addition of an allylsilane on an acyliminium ion derived from (S)-pyroglutamic acid is described. The synthetic potential of this methodology is demonstrated by the enantioselective synthesis of (-)-indolizidine 195B, (-)-indolizidine 223AB, (+)-monomorine and (-)-3-butyl-5-propyl indolizidine. (c) 2006 Elsevier Ltd. All rights reserved.