NEW INTERMEDIATES FOR THE PREPARATION OF 11-METHYLENE STEROIDS

NEW INTERMEDIATES FOR THE PREPARATION OF 11-METHYLENE STEROIDS

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.

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Bibliographische Detailangaben
Hauptverfasser: SANDOVAL RODRÍGUEZ, Celso Miguel, HERRÁIZ SIERRA, Ignacio, MESSINA, Ivano, IGLESIAS RETUERTO, Jesús Miguel
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
STEROIDS
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Beschreibung
Zusammenfassung: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.