1,2,4-Oxadiazolin-5-one derivatives, process for their preparation and pharmaceutical compositions containing them
US4365064A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1980 |
| Grant date | Dec 21, 1982 |
| Priority date | — |
| Expiry date | Oct 14, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D413/06
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention concerns new compounds of the formula (I) ##STR1## wherein R.sup.1 is hydrogen, phenyl or phenyl substituted with at least one alkyl having 1 to 4 carbon atoms, halogen, alkoxy having 1 to 4 carbon atoms or nitro; PA1 R.sup.2 is alkyl having 1 to 4 carbon atoms, cycloalkyl having 5 to 7 carbon atoms, phenyl, or phenyl substituted with at least one alkyl having 1 to 4 carbon atoms, halogen, alkoxy having 1 to 4 carbon atoms or nitro; PA1 R.sup.3 is alkoxy having 1 to 4 carbon atoms or hydrogen, PA1 R.sup.4 is hydrogen, alkyl having 1 to 4 carbon atoms unsubstituted or substituted with alkoxy having 1 to 4 carbon atoms, benzyloxy or cyano, phenyl, or phenyl substituted with at least one alkyl having 1 to 4 carbon atoms, halogen, alkoxy having 1 to 4 carbon atoms or nitro, or phenyl-(C.sub.1-4 alkyl)-alkyl, in which the phenyl moiety may bear an alkoxy substituent having 1 to 4 carbon atoms or a halogen; m and n are each 0, 1 or 2 or a pharmaceutically acceptable acid addition or quaternary salt thereof. The compounds are potent vasodilators and exert a favorable influence on the extremital blood flow. They also show a heart function influencing activity. Methods for the…
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