Process for preparing 9.alpha.-OH BN acid methyl ester
US4223092A · kind A · utility
1Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1979 |
| Grant date | Sep 16, 1980 |
| Priority date | — |
| Expiry date | Apr 23, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P33/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Valuable steroid intermediates, 9.alpha.-hydroxyandrost-4-ene-17.beta.-ol-3-one (9.alpha.-OH testosterone), 9.alpha.-hydroxy-3-ketobisnorchol-4-en-22-ol (9.alpha.-OH BN alcohol) and 9.alpha.-hydroxy-3-ketobisnorchol-4-en-22-oic methyl ester (9.alpha.-OH BN acid methyl ester), prepared by microbiological conversion of steroids having 17-alkyl side chains of 8 to 10 carbons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.