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:
Jan. 31, 2017
Filed:
Apr. 12, 2013
Applicant:
Industriale Chimica S.r.l., Milan, IT;
Inventors:
Roberto Lenna, San Giorgio su Legnano, IT;
Francesco Barbieri, Masciago, IT;
Maria Giovanna Luoni, Cardano al Campo, IT;
Monica Noseda, Como, IT;
Assignee:
INDUSTRIALE CHIMICA S.R.L., , IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07J 53/00 (2006.01);
U.S. Cl.
CPC ...
C07J 53/008 (2013.01);
Abstract
A process is disclosed wherein, using either 17a-(3-hydroxypropyl)-6p,7p;15p,16p-dimethylene-5p-androstane-3p,5,17p-triol (II) or 3β,5^ïI^κ^-6β,7β;15β,16β-dimethylene-5β,17α-pregnane-21,17-carbolactone (III) as starting material, through a single-step reaction it is obtained drospirenone (I), a synthetic steroid with progestogenic, antimineralocorticoid and antiandrogenic activity, useful for preparing pharmaceutical compositions with contraceptive action.