[EN] PROCESS AND NEW INTERMEDIATES FOR THE PREPARATION OF 11-METHYLENE STEROIDS<br/>[FR] PROCÉDÉ ET NOUVEAUX INTERMÉDIAIRES POUR LA PRÉPARATION DE STÉROÏDES 11-MÉTHYLÈNE
申请人:BIONICE S L U
公开号:WO2017149091A1
公开(公告)日:2017-09-08
The invention relates to a process for the preparation of 11 -methylene steroids through selective olefination of the ketone at position 11. The resulting products are useful intermediates in the preparation of several pharmaceutically active agents, such as Etonogestrel and Desogestrel.
[EN] COMBINED SYNTHESIS ROUTE FOR ETONOGESTREL AND DESOGESTREL<br/>[FR] VOIE DE SYNTHÈSE COMBINÉE DE L'ÉTONOGESTREL ET DU DÉSOGESTREL
申请人:MSD OSS BV
公开号:WO2013135744A1
公开(公告)日:2013-09-19
The present invention relates to a synthesis route and to steroid derivatives of general formula VI and VII useful in the synthesis of desogestrel and etonogestrel.