Chiral derivatives of Garcinia acid bearing lactone ring moiety and process for preparing the same

摘要

The present invention relates to a novel chiral derivative of Garcinia acid bearing lactone ring moiety of formula I,wherein:R1=R3=alkali salt of carboxyl acid, or acid chloride or lower esters or part of N-substituted cyclic imides.R2=hydroxyl or protected hydroxyl group and a process for preparing the same.