Asymmetric approaches to 1,2-disubstituted mitosenes based on the intramolecular cyclization of diazoesters
作者:Sangku Lee、Hee-Jong Lim、Kobpurn Lulu Cha、Gary A. Sulikowski
DOI:10.1016/s0040-4020(97)01033-8
日期:1997.12
A strategy for the asymmetric synthesis of 1,2-disubstituted mitosenes is described. The key reaction is the decomposition of a meso diazoester in the presence of chiral copper(I) catalysts. Cyclization of diazoesters derived from (1R, 2S, 5R)-menthol and (R)-pantolactone provide optically pure 1,2-disubstituted mitosenes following oxidation and purification by flash chromatography. (C) 1997 Elsevier Science Ltd.