4-substituerede catechol-derivater, fremgangsmåde til deres fremstilling, deres anvendelse til fremstilling af farmaceutiske præparater og farmaceutiske præparater indeholdende sådanne derivater

摘要

This invention relates to bicyclic catechol derivatives having the general formulae I and II IMAGE I IMAGE II wherein R1, R2, R3 and Z represent various substituents, to a preparation process of the same comprising reacting a compound of formula III IMAGE III wherein R1 and R2 have the meanings given above with an appropriately substituted propionic or butyric acid (or an ester or a salt of the same) of formula IV IMAGE IV wherein R3 has the meaning given above, and to therapeutical compositions wherein the active ingredient is one of these compounds.