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1. (WO2017149091) PROCESS AND NEW INTERMEDIATES FOR THE PREPARATION OF 11-METHYLENE STEROIDS

Pub. No.:    WO/2017/149091    International Application No.:    PCT/EP2017/054952
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Fri Mar 03 00:59:59 CET 2017
IPC: C07J 1/00
C07J 11/00
C07J 21/00
C07J 33/00
C07J 43/00
C07J 51/00
Applicants: BIONICE, S.L.U
Inventors: SANDOVAL RODRÍGUEZ, Celso Miguel
HERRÁIZ SIERRA, Ignacio
MESSINA, Ivano
IGLESIAS RETUERTO, Jesús Miguel
Title: PROCESS AND NEW INTERMEDIATES FOR THE PREPARATION OF 11-METHYLENE STEROIDS
Abstract:
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.