The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 2010
Filed:
Jul. 31, 2003
Applicants:
Paride Grisenti, Milan, IT;
Fabio Pecora, Milan, IT;
Elisa Verza, Milan, IT;
Massimo Leoni, Milan, IT;
Laura Bossi, Milan, IT;
Inventors:
Paride Grisenti, Milan, IT;
Fabio Pecora, Milan, IT;
Elisa Verza, Milan, IT;
Massimo Leoni, Milan, IT;
Laura Bossi, Milan, IT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07J 1/00 (2006.01); C07J 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a new process of synthesis and to some new intermediates for the preparation of steroids with progestogen activity, more particularly, for the preparation of Desogestrel of formula (I). Said process is characterized by the regioselective reduction of the compound of formula (II) to give the intermediate of formula (III).