Substituted pyridazinones
US5151420A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1990 |
| Grant date | Sep 29, 1992 |
| Priority date | — |
| Expiry date | Mar 8, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D403/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Substituted benzylideneiminophyenylpyridazinones or dihydropyridazinones of formula I ##STR1## in which R.sub.1 and R.sub.8 independently mean hydrogen or lower alkyl, R2 is hydrogen, lower alkyl, trifluoromethyl, hydroxy alkyl, halogen alkyl, alkoxy alkyl, pyridyl, furyl, thienyl or cycloalkyl or one of optionally substituted groups; aryl, aralkyl, aralkenyl or nitrogen containing heterocyclic ring joining through an alkyl or alkenyl group and R.sub.3, R.sub.4 and R.sub.5 independently mean hydrogen, lower alkyl, hydroxy alkyl, halogen, hydroxy, alkoxy, acyloxy, aroyloxy, formyl, acyl, cyano, amino, carboxy or trifluoromethyl, R.sub.6 and R.sub.7 independently mean hydrogen, amino, lower alkyl, hydroxy, nitro or cyano or R.sub.2 and R.sub.7 together form a --CH.sub.2 --NH-- or --CH.dbd.N-- group and A means phenyl, naphtyl or a nitrogen containing heterocyclic ring. The compounds may be used in the treatment of congestive heart failure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.