6-SUBSTITUTED-S-TRIAZOLE[3,4-A]PHTHALAZINE DERIVATIVES

摘要

The present invention refers to new s-triazolo¢3,4-a! phthalazine derivatives, to the process for their preparation and to the pharmaceutical compositions containing them. The new derivatives have the general formula I < IMG > (I) An example of a compound of the invention is 3-(4-methoxy-phenyl)-6-(di(2-methoxyethyl)amine)-1,2,4-triazolo-¢3,4-a!phthalazine which is a compound of formula I above in which R is 4-methoxy-phenyl, R1 is di (2-methoxyethyl) amino and R2 and R3 are hydrogen. The compounds are useful as antianxiety agents.