Process and new intermediates for the preparation of steroids with a progestogen activity
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 23, 2010
Grant Date -
Oct 20, 2005
app pub date -
Jul 31, 2003
filing date -
Aug 2, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
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).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully