Enzymatic process for obtaining 17 alpha-monoesters of cortexolone and/or its 9,11-dehydroderivatives
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United States of America Patent
Stats
-
Jan 1, 2019
Grant Date -
Nov 10, 2016
app pub date -
Jul 15, 2016
filing date -
Aug 3, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention refers to a new enzymatic process for obtaining 17α-monoesters of cortexolone and/or its 9,11-dehydroderivatives starting from the corresponding 17α,21-diesters which comprises an enzymatic alcoholysis reaction. Furthermore, the present invention refers to new crystalline forms of cortexolone-17α-propionate and 9,11-dehydro-cortexolone 17α-butanoate.
First Claim
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International Classification(s)
- 2016 Application Filing Year
- A61K Class
- 19101 Applications Filed
- 13019 Patents Issued To-Date
- 68.16 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 5 Citation Count
- A61K Class
- 58.87 % this patent is cited more than
- 6 Age
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| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jul 1, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 1, 2030 |
