Process and new intermediates for the preparation of 11-methylene steroids

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United States of America Patent

PATENT NO 11034716
APP PUB NO 20190092807A1
SERIAL NO

16081835

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Abstract

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A process for the preparation of 11-methylene steroids from di-keto steroids involves selective olefination of the ketone at position 11 of the di-keto steroids. The resulting 11-methylene steroid products can be used as intermediates in the preparation of the synthetic steroids, Etonogestrel and Desogestrel, as well as other pharmaceutically active agents.

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Patent Owner(s)

Patent OwnerAddress
CRYSTAL PHARMA SAPARQUE TECNOLÓGICO DE BOECILLO P 113 BOECILLO - VALLADOLID E-47151

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Herráiz, Sierra Ignacio Boecillo-Valladolid, ES 3 0
Iglesias, Retuerto Jesús Miguel Boecillo-Valladolid, ES 9 16
Messina, Ivano Boecillo-Valladolid, ES 4 0
Sandoval, Rodríguez Celso Miguel Boecillo-Valladolid, ES 3 2

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