NOVEL OPTICALLY ACTIVE, HETEROAROMATIC ß-HYDROXY ESTERS AND PROCESSES FOR THEIR PREPARATION FROM ß-KETO ESTERS AND PROCESSES FOR THE PREPARATION OF THESE ß-KETO ESTERS

摘要

The present invention relates to new optically active heteroaromatic ß-hydroxy esters useful in the synthesis of epothilone derivatives, to certain compounds used to produce these intermediates, as well as to processes for their production.