Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Silvia Piuri0
Francesca Costantino0
Roberto Lenna0
Date of Patent
September 8, 2009
Patent Application Number
11067769
Date Filed
February 28, 2005
Patent Primary Examiner
Patent abstract
A process is described for preparing drospirenone, a synthetic steroid with progestogenic, antimineralocorticoid and antiandrogenic activity, useful for the preparation of pharmaceutical compositions with contraceptive action, starting from 5,6β-epoxy-7β-hydroxy-15β,16β-methylene-3β-pivaloyloxy-5β-androstan-17-one.
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