Disclosed are compounds of the formula ##STR1## wherein: R.sup.1 and R.sub.2 may be either the same or different and each is hydrogen or lower alkyl; and wherein R.sup.3 and R.sup.4 may be either the same or different and each is hydrogen, halogen, or lower alkyl, with the proviso that R.sup.3 and R.sup.4 cannot both be hydrogen. These compounds are useful as anticonvulsant or anxiolytic agents.
揭示的化合物的结构式为##STR1##其中:R.sup.1和R.sub.2可以相同也可以不同,每个都是氢或低碳烷基;R.sup.3和R.sup.4可以相同也可以不同,每个都是氢、卤素或低碳烷基,但R.sup.3和R.sup.4不能同时为氢。这些化合物可用作抗癫痫或
抗焦虑药物。