Novel 4-hydroxy-3-pyridine-carboxamides useful for treating inflammation and rheumatism
US4925859A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1988 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | Mar 31, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D417/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel pyridines of the formula ##STR1## wherein R is selected from the group consisting of (a) phenyl optionally substituted with at least one member of the group consisting of hydroxy, alkyl and alkoxy of 1 to 5 carbon atoms, halogen, --CF.sub.3 and --NO.sub.2 and (b) a 5 to 6 member hetercyclic optionally substituted with alkyl of 1 to 5 carbon atoms, R.sub.1 and R.sub.2 are individually selected from the group consisting of (a) alkyl of 1 to 5 carbon atoms, (b) 5 to 6 member heterocyclic optionally substituted with alkyl of 1 to 5 carbon atoms and (c) phenyl and naphthyl optionally substituted with at least one member of the group consisting of hydroxy, alkyl and alkoxy of 1 to 5 carbon atoms, halogen, --NO.sub.3 and --CF.sub.3, R.sub.3 is selected from the group consisting of hydrogen, alkyl of 1 to 5 carbon atoms, --(CF.sub.2).sub.n --CF.sub.3 and ##STR2## n is an integer from 0 to 4 and Alk is alkyl of 1 to 5 carbon atoms and their non-toxic, pharmaceutically acceptable salts with acids and bases having anti-inflammatory and anti-rheumatic properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.