[EN] PROCESS FOR PREPARING 11 -METHYLENE-18-METHYL-ESTR-4-EN-3, 17- DIONE, USEFUL AS INTERMEDIATE COMPOUND FOR THE SYNTHESIS OF MOLECULES HAVING A PHARMACOLOGICAL ACTIVITY<br/>[FR] PROCÉDÉ DE PRÉPARATION DE LA 11-MÉTHYLÈNE-18-MÉTHYL-ESTR-4-ÈNE-3,17-DIONE, UTILE COMME COMPOSÉ INTERMÉDIAIRE POUR LA SYNTHÈSE DE MOLÉCULES AYANT UNE ACTIVITÉ PHARMACOLOGIQUE
申请人:IND CHIMICA SRL
公开号:WO2014037873A1
公开(公告)日:2014-03-13
There is described a process for the industrial synthesis of 11-methylene-18- methyl-estr-4-en-3, 17-dione, a compound having the structure formula (I) depicted below: (Formula I) (I) useful as intermediate compound in the synthesis of the progestin compounds Desogestrel and Etonogestrel.