Heterocyclic compounds containing nitrogen and sulfur, pharmaceutical
申请人:Richter Gedeon Vegyeszeti Gyar Rt.
公开号:US05096902A1
公开(公告)日:1992-03-17
The invention relates to novel nitrogen- and sulfur-containing heterocyclic compounds of the formula (I), acid addition salts thereof, pharmaceutical compositions containing them and a process for their preparation. In the formula (I) ##STR1## Ar stands for an optionally mono- or polysubstituted aryl or heteroaryl group; R.sup.1 means a carbonyl or (C.sub.2-6 alkenyl)carbonyl group; R.sup.2 stands for hydrogen C.sub.1-6 alkyl, phenyl or phenyl (C.sub.1-4 alkyl) group; R.sup.3 means hydrogen or (C.sub.1-6 alkoxy)carbonyl group; R.sup.4 and R.sup.5 stand, independently from each other, for hydrogen or C.sub.1-6 alkyl group; R.sub.6 ogen, C.sub.1-6 alkyl group or halophenyl group; m is 0 or 1; and n is 1 or 2, with the proviso that R.sup.2 means hydrogen when m is 0. The compounds of formula (I) show a significant cerebral antihypoxic action and thus, they can be used for the treatment of diseases caused by hypoxic brain damages such as e.g. the senile dementia, Alzheimer's disease or disturbances of the cognitive function.