Antiallergic 5-alkyl-1-phenyl-2-piperazinoalkylpyrazolin-3-one compounds
US4672063A · kind A · utility
10Cited by
5References
19Claims
0Family size
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Key dates
| Filing date | Nov 21, 1985 |
| Grant date | Jun 9, 1987 |
| Priority date | — |
| Expiry date | Nov 21, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D405/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
5-alkyl-1-phenyl-2-piperazinoalkylpyrazolin-3-one compounds of the Formula ##STR1## in which R.sub.1 is a straight-chain, branched or cyclic alkyl group with up to 6 carbon atoms, Z is an alkylene chain with 2 to 4 carbon atoms, and 1-phenyl substituent is an optionally substituted phenyl ring, and R.sub.4 is a phenyl or pyridyl group which is optionally substituted and their preparation are described. The compounds have pharmacological, particularly antiallergic, properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.