First asymmetric synthesis of both enantiomers of andirolactone
作者:Yi Li、Tao Zhang、Yu-Lin Li
DOI:10.1016/j.tetlet.2006.12.031
日期:2007.2
We have achieved the first asymmetric synthesis of (+)- and (-)-andirolactone. The key steps were separation of limonene oxide diastereomers, asymmetric oxidation induced by the chiral intermediate and ring-closing metathesis in the presence of catalytic amounts of Lewis acid to form the spirocyclic butenolides. (c) 2006 Published by Elsevier Ltd.