Dibenzopyrimidoazepines

Abstract

The invention relates to dibenzopyrimidoazepines of the formula (I) ##STR1## and their acid addition and quaternary ammonium salts. In formula (I) R.sup.1 and R.sup.2 each represent hydrogen, lower alkyl, lower alkoxy, halogen or trifluoromethyl and X represents two hydrogen atoms, an oxo group, a protected oxo group or an oximino group. The compounds in which X represents two hydrogen atoms, an oxo group or an oximino group possess hypoglycaemic activity. The compound in which X represents a protected oxo group are intermediates for preparing the compounds in which X is an oxo group. The dibenzopyrimidoazepines may be prepared by cyclising or cyclodehydrating novel morphanthridine derivatives.

Dependencies are inferred from the claim text.