Abstract: A method for treating diabetes comprising administering a therapeutically effective amount of a 2-(2,2-disubstituted)ethylimidazoline of the general formula (I) ##STR1## wherein R is a phenyl group or a 2-pyridyl group or the pharmaceutically acceptable acid addition salts thereof, to a patient having diabetes.

Abstract: 2-SUBSTITUTED-1,3-DIAZACYCLIC COMPOUNDS OF THE FORMULA: ##STR1## wherein R.sub.1 represents a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group; R.sub.2 represents a hydrogen atom, a lower alkoxycarbonyl group, an aliphatic acyl group or an aromatic acyl group, the aromatic ring of which may have one or more substituents selected from a halogen atom, a lower alkyl group, a lower alkoxy group, an acyl group and an acyloxy group; R.sub.3 represents a hydrogen atom, a lower alkyl group, a lower hydroxyalkyl group or an aralkyl group; R.sub.4 represents a hydrogen atom, a lower alkyl group or an aryl group; R.sub.6 represents a cyclohexyl group, a pyridyl group or a phenyl group which may have a substituent selected from a halogen atom, a lower alkyl group and a lower alkoxy group; A represents -N.dbd.