Biliary acid derivatives, processes for the preparation thereof and pharmaceutical compositions containing them
US4921848A · kind A · utility
27Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Oct 19, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J17/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds of formula I ##STR1## wherein: R.sub.1 is hydrogen or hydroxy, and the methyl and hydroxy groups at 6- and 7-positions respectively can be either in .alpha. or .beta. configuration, are useful in human therapy. Compounds I are prepared by methylation of the corresponding appropriately protected 7-keto-derivatives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.