Process for preparation of .DELTA..sup.4,9(11),16 pregnatriene-3,20-diones
US5502223A · kind A · utility
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Key dates
| Filing date | Feb 21, 1995 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Feb 21, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/582
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of a compound of the formula ##STR1## wherein R.sub.1 is acyl of an organic carboxylic acid of 1 to 8 carbon atoms useful as intermediates for synthesis of therapeutically active steroids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.