PROCESS FOR THE SYNTHESIS OF (11 BETA,17ALPHA)-17-ACETOXY-11 -METHYL-19-NORPREGN-4-EN-3,20-DIONE

摘要

The invention relates to a process for the synthesis of (11β,17α)-17-acetoxy-11 - methyl-19-norpregn-4-en-3,20-dione of formula (I) using the compound of formula (II) as starting material as well as the intermediates of the process.