PROCESS FOR THE PRODUCTION OF 3-OXO-PREGN-4-ENE-21,17-CARBOLACTONES BY THE METAL-FREE OXIDATION OF 17-(3-HYDROXYPROPYL)-3,17-DIHYDROXYANDROSTANES

This invention relates to processes for the production of 3-oxo-pregnane-21,17-carbolactones of formula II as well as 3-oxo-pregn-4-ene-21,17-carbolactones of formula III by the metal-free oxidation of 17-(3-hydroxypropyl)-3,17-dihydroxyandrostanes of formula I In addition, the invention relates to...

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Bibliographic Details
Main Authors SEBA, HARTMUT, SEILZ, CARSTEN
Format Patent
LanguageEnglish
French
German
Published 27.04.2016
Subjects
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
STEROIDS
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Summary:This invention relates to processes for the production of 3-oxo-pregnane-21,17-carbolactones of formula II as well as 3-oxo-pregn-4-ene-21,17-carbolactones of formula III by the metal-free oxidation of 17-(3-hydroxypropyl)-3,17-dihydroxyandrostanes of formula I In addition, the invention relates to the dichloromethane hemisolvate of 6²,7²;15²,16²-dimethylene-3-oxo-17±-pregnan-5²-ol-21,17-carbolactone (IV) as such as well as to a process for the production of drospirenone.
Bibliography:Application Number: EP20060762786