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Title:
A PROCESS FOR INTRODUCING A DOUBLE BOND INTO POSITION 15,16 OF A STEROID
Document Type and Number:
WIPO Patent Application WO/2011/098439
Kind Code:
A3
Abstract:
The invention relates to a process for the preparation of a compound of formula (I): wherein R1 and R2 are as defined in the description, by reaction of a compound of formula (II) with a base. Compound (I) is an intermediate useful in the preparation of gestodene.

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Inventors:
MOUTOU JEAN-LUC (FR)
MOUTON FLORENT (FR)
PELLEGRINO GILLES (FR)
DILLENSCHNEIDER JEAN-MARC (FR)
LAFAY JEAN (FR)
Application Number:
PCT/EP2011/051783
Publication Date:
October 27, 2011
Filing Date:
February 08, 2011
Export Citation:
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Assignee:
THERAMEX (MC)
MOUTOU JEAN-LUC (FR)
MOUTON FLORENT (FR)
PELLEGRINO GILLES (FR)
DILLENSCHNEIDER JEAN-MARC (FR)
LAFAY JEAN (FR)
International Classes:
C07J1/00
Foreign References:
EP0201452A21986-11-12
EP0092174A11983-10-26
EP0051762A11982-05-19
Other References:
HOFMEISTER H ET AL: "[Synthesis of gestodene]", ARZNEIMITTEL-FORSCHUNG MAY 1986 LNKD- PUBMED:3730011, vol. 36, no. 5, May 1986 (1986-05-01), pages 781 - 783, XP002589775, ISSN: 0004-4172
Attorney, Agent or Firm:
NEVANT, Marc et al. (158 rue de l'Université, Paris Cedex 07, FR)
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