Industrial process for the preparation of...

Details Industrial process for the preparation of... Industrial process for the preparation of...

C - Chemistry, Metallurgy

07

J

C07J 53/00 (2006.01)

Patent

CA 2585802

The invention relates to an industrial process for the preparation of 17- hydroxy- 6.beta.,7.beta.;15.beta.,16.beta.-bismethylene-3-oxo-17.alpha.-pregn- 4-ene-21-carboxylic acid .gamma.-lactone of formula (I) , and to the key- intermediates for this process.

La présente invention a pour objet un procédé industriel de synthèse de la .gamma.-lactone de l~acide 17-hydroxy- 6.beta.,7.beta.;15.beta.,16.beta.-bisméthylène-3-oxo-17.alpha.-pregn-4-ène-21-carboxylique de formule (I), ainsi que les intermédiaires-clés de ce procédé.

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