Synthesis of (+)-coniceine via reductive photocyclization of dienamides: an entry to indolizidines
作者:Thomas Hjelmgaard、Daniel Gardette、David Tanner、David J. Aitken
DOI:10.1016/j.tetasy.2007.03.004
日期:2007.3
This paper describes the establishment of a new synthetic route to the hydrobromide salt of (+)-coniceine 1 with high enantiopurity in five steps and 8% overall yield. The key step is the reductive photocyclization of an acyclic chiral dienamide, for which a convenient one-pot synthesis is described. (c) 2007 Published by Elsevier Ltd.