Derivatives of 1,3,4-thiadiazole, a method of obtaining them and pharmaceutical compositions containing them
US5086053A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1989 |
| Grant date | Feb 4, 1992 |
| Priority date | — |
| Expiry date | Aug 16, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D417/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to thiadiazole derivatives having the formula: ##STR1## in which: R.sub.1 represents a phenyl group, non-substituted or substitued 1 to 3 times by a halogen atom, preferably chlorine or fluorine, or by a C.sub.1 -C.sub.4 alkyl group, preferably the methyl group, or by a C.sub.1 -C.sub.4 alkoxy group, preferably the methoxy group, or by a hydroxy group or by a trifluoromethyl group or a phenyl group substituted simultaneously by 1 to 3 halogen atoms and by 1 or 2 methyl groupings; PA1 R.sub.2 represents hydrogen or a C.sub.1 -C.sub.4 alkyl group, PA1 R.sub.3 represents an alkylamino group or a heterocyclic group, Application: Drugs for treatment of notably senile dementia.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.