作者:Benoît Hartmann、Alice M. Kanazawa、Jean-Pierre Deprés、Andrew E. Greene
DOI:10.1016/s0040-4039(00)79251-3
日期:1993.6
(-)-Homogynolide-A, a spiro beta-methylene-gamma-butyrolactone sesquiterpene from Homogyne alpina, has been stereoselectively prepared in natural form from S-(+)-carvone.
First Comprehensive Bakkane Approach: Stereoselective and Efficient Dichloroketene-Based Total Syntheses of (±)- and (−)-9-Acetoxyfukinanolide, (±)- and (+)-Bakkenolide A, (−)-Bakkenolides III, B, C, H, L, V, and X, (±)- and (−)-Homogynolide A, (±)-Homogynolide B, and (±)-Palmosalide C
作者:Timothy J. Brocksom、Fernando Coelho、Jean-Pierre Deprés、Andrew E. Greene、Marco E. Freire de Lima、Olivier Hamelin、Benoît Hartmann、Alice M. Kanazawa、Yanyun Wang
DOI:10.1021/ja0208456
日期:2002.12.1
dichloroketene with dimethylcyclohexenes has been used as the key reaction in an efficient, general approach to the bakkanes. New methods and methodologies that have been developed in this work include spiro beta-methylene-gamma-butyrolactonizations, a vicinal dicarboxylation, an angelic esterpreparation, a transesterification, an epoxy ketone double reduction, and a retro aldol-aldol approach to low-energy aldol