3,4-dihydro-4-oxo-3-(2-propenyl)-1-phthalazineacetic acids and derivatives, their preparations and medicines containing them
US5489592A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1994 |
| Grant date | Feb 6, 1996 |
| Priority date | — |
| Expiry date | Jun 20, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D333/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel 3,4-dihydro-4-oxo-3(prop-2-enyl)-1-phtalazineacetic acids and derivatives of formula (I) ##STR1## in which R.sub.1 R.sub.2 and R.sub.3 are the same or different and stand for H, a halogen or a linear or branched aliphatic, saturated or unsaturated radical, substituted or not by at least one halogen or R.sub.4 residue such as defined below, except when R.sub.4 is H; R.sub.4 and R.sub.5 are the same or different and stand for H, a linear or branched aliphatic radical, saturated or unsaturated, an aryl or heteroaryl radical, said radicals being substituted or not by at least one grouping such as fluorine, chlorine, bromine, methyl or trifluoromethyl, where R.sub.4 and R.sub.5 do not simultaneously denote H; R.sub.6 stands for hydroxy or alkoxy radical; R.sub.7 stands for H, a halogen, a linear or branched aliphatic saturated or unsaturated radical, an alkoxy radical, said radicals being substituted or not by analiphatic or halogenated radical, a nitro group, a substituted or unsubstituted amino group, S(O)n R.sub.8 or a cyano group; n is equal to 0,1 or 2; R.sub.8 is an aliphatic, linear or branched radical, an aryl or heteroaryl radical, an amino radical, said radicals being su…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.