HETEROCYCLIC COMPOUNDS AND THEIR PREPARATION AND USE

摘要

Heterocyclic dihydroxyquinoxaline compounds having the formula wherein -A- together with the two carbon atoms denoted as 1 and 2 is selected from R<1>, R<2> and R<3> are independently H, halogen, CN, NH2, NO2, SO3H, SO2NH2, or CONH2 The invention also relates to a method of preparing the compounds, pharmaceutical compositions thereof, and their use. The compounds are useful in the treatment of indications caused by hyperactivity of the excitatory neurotransmitters.