Imidazo[4,5-b]pyridin-2-one derivatives
US4806560A · kind A · utility
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Key dates
| Filing date | Oct 7, 1987 |
| Grant date | Feb 21, 1989 |
| Priority date | — |
| Expiry date | Oct 7, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P37/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Imidazo[4,5-b]pyridin-2-one derivatives of the formula (I) ##STR1## in which n is 2, 3 or 4, x is .dbd.CH-- or .dbd.N--, R.sub.1 and R.sub.2, which may be the same or different, each represent hydrogen, halogen or (C.sub.1-4) alkoxy and either R.sub.3 is H or OH and R.sub.4 is H, or R.sub.3 and R.sub.4 together form a direct bond, their enantiomers and their addition salts with pharmaceutically acceptable acids are pharmacologically active, for example as antagonists to histamine and serotonin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.