C - Chemistry – Metallurgy – 07 – J
Patent
C - Chemistry, Metallurgy
07
J
C07J 53/00 (2006.01) C07J 1/00 (2006.01)
Patent
CA 2585805
The invention relates to a process for the preparation of 17-hydroxy- 6.beta.,7.beta.;15.beta.,16.beta.- bismethylene-17.alpha.-pregn-4-ene-3-one-21- carboxylic acid .gamma.-lactone of formula (I) as well as to key- intermediates for this process.
La présente invention a pour objet un procédé de synthèse de la .gamma.-lactone de l~acide 17-hydroxy-6.beta.,7.beta.;15.beta.,16.beta.- bisméthylène-17.alpha.-pregn-4-ène-3-one-21-carboxylique de formule (I), ainsi que les intermédiaires-clé de ce procédé.
Balogh Gabor
Galik Gyorgy
Horvath Judit
Maho Sandor
Soros Bela
Fetherstonhaugh & Co.
Richter Gedeon Vegyeszeti Gyar Rt.
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