Imidazoquinoxaline compounds and their preparation and use

Abstract From the Canadian patent

New imidazoquinoxaline compounds having the general formula (I), wherein, R3 is , or CO2R', wherein R' is C3-7-cycloalkyl;, R5 is methyl, which is substituted with hydrogen alkoxycar-, bonyl, heteroaryl, morpholino C3-7-cycloalkyl, C1-6-alkenyl, arylacyl alkylacyl, alkoxyalkyl, alkoxy, phthalimidophenyl aralkyl or aryl, all of which are substituted with hydrogen halogen, C1-6-alkyl, amino, azido, or C1-6-alkoxy; and R6 is H, C1-6-alkyl, halogen, or CF3. The compounds are useful in psychopharmaceutical preparations as anticonvulsants, anxiolytics, hypnotics and in, improving the cognitive function of the brain of mammals.