Intermediates for the preparation of 6.alpha., 9.alpha.-difluoro steroids
US5556965A · kind A · utility
5Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 1995 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | May 15, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J3/005
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A compound of the formula ##STR1## wherein R is hydrogen or an ester remainder, X is hydrogen or fluorine and Y combined with the doted lines represents ##STR2## or X is hydrogen and and Y combined with the dotted lines is ##STR3## and R.sub.1 is the remainder of an enol ether or ester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.