Process for production drospirenone and intermediate products of the process
US6121465A · kind A · utility
14Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1999 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Feb 11, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J53/008
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for the production of drospirenone (6.beta., 7.beta.; 15.beta., 16.beta.-dimethylene-3-oxo-17.alpha.-pregn-4-ene-21, 17-carbolactone, DRSP) (1) and 7.alpha.-(3-hydroxy-1-propyl)-6.beta., 7.beta.; 15.beta., 16.beta.-dimethylene-5.beta.-androstane-3.beta., 5, 17.beta.-triol (ZK 92836) and 6.beta., 7.beta.; 15.beta., 16.beta.-dimethylene-5.beta.-hydroxy-3-oxo-17.alpha.-androstane-21, 17-carbolactone (ZK 90965) as intermediate products of the process. ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.