Preparation of .DELTA..sup.9(11) steroid
US5399727A · kind A · utility
2Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Jun 2, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J41/0094
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of a compound of the formula ##STR1## comprising reacting a compound of the formula ##STR2## with chlorosulfonic in an organic solvent wherein the reaction is effected at -20.degree. C. to -10.degree. C. and the temperature is then allowed to rise to 0.degree. C. to 5.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.