Isomerisation of 6&bgr;-fluorosteroids into the corresponding 6&agr;-fluoro derivatives
US6369218B1 · kind B1 · utility
0Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 2001 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | May 16, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J71/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Described herein is the isomerisation process of 6&bgr;-fluorosteroids into the corresponding pharmacologically active 6&agr;-fluoro derivatives, comprising the reaction of 6&bgr;-fluorosteroids, or 6&agr;/6&bgr; isomeric mixtures, with an organic base containing a diazoimino group in a suitable organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.