Process for preparing 21 acyloxy-.DELTA.4,9(11),16 pregnatrienes 3-20-dione
US5401864A · kind A · utility
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Key dates
| Filing date | Oct 29, 1993 |
| Grant date | Mar 28, 1995 |
| Priority date | — |
| Expiry date | Oct 29, 2013 |
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 1 to 8 carbon atoms, by reducing an intermediary to form an alcohol, oxidizing the alcohol to form an aidehyde, which is subjected to the action of an acyloxylation agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.