3-IMINOPYRIDAZINE DERIVATIVES, PROCESS FOR THEIR PREPARATION AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM

摘要

The invention relates to derivatives of 2,3-dihydro 3-imino-pyridazine responding to general formula: (I) in which: A represents an atom of oxygen or of sulfur; R1 represents a lower alkyl group, or an aromatic group selected from: the phenyl group; the phenyl groups mono- or poly-substituted by a halogen group, a lower alkyl group, a lower alkoxy group, a nitro group, a hydroxy or methylenedioxy group; the naphthyl group; the furyl group; the thienyl group or the pyridyl group; R2 and R3 each designate independently hydrogen or a lower alkyl group; a phenyl group, or R2 and R3, taken together, constitute, with the 2 atoms of the pyridazinic cycle to which they are bonded, a benzene ring, and their pharmaceutically acceptable salts. Application: antidepressants or psychotonics.