.delta..sup.1,4 -pregnadiene-3,20-diones
US5434258A · kind A · utility
15Cited by
2References
1Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 2, 1994 |
| Grant date | Jul 18, 1995 |
| Priority date | — |
| Expiry date | Feb 2, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J5/0092
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A compound of the formula ##STR1## wherein R is selected from the group consisting of hydrogen, acyl of an organic carboxylic acid of 1 to 8 carbon atoms, allyloxycarbonyl, alkoxycarbonyl and aralkoxycarbonyl of up to 8 carbon atoms and alkylsulfonyl and arylsulfonyl of up to 8 carbon atoms and their use to prepare substituted 16,17-methylenedioxy-steroids and novel intermediates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.