| abstract |
The invention relates to the pyridazine derivatives of the formula: ##STR1## in which R 1 is H, a substituted or unsubstituted phenyl group, a naphthyl group, a cyclohexyl group, a thien-2-yl group, a thien-3-yl group or an indol-3-yl group, R 2 is H or an alkyl or phenyl group, R 3 is H, an alkyl, or phenyl group in formula Ib and a cyano group in formula Ia, and Alk is (CH 2 ) n where n is 2, 3 or 4, or --CH 2 --C≡C--, and X - is halide, a process for the preparation of the said products and their application as medicaments. |