Diaminocyclobutene-3,4-diones
US5530025A · kind A · utility
3Cited by
3References
21Claims
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Inventors
Key dates
| Filing date | Jun 2, 1995 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Jun 2, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2602/42
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The compounds of formula I: ##STR1## wherein R.sub.1 and R.sub.2 are hydrogen, alkyl or cyclic or bicyclic alkyl; R.sub.3 is formyl, alkanoyl, alkenoyl, alkylsulfonyl, aroyl, arylalkenoyl, arylsulfonyl arylalkanoyl or arylalkylsulfonyl; A is a substituted phenyl group of the following formula: ##STR2## wherein R.sub.5 is cyano and R.sub.6 is alkyl, chloro, bromo, fluoro or iodo and pharmaceutically acceptable salts thereof, are smooth muscle relaxants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.