Substituted guanidine derivatives

Compounds of the formula (I)

• 84
• in which
• R1 represents a five- or six-membered heterocyclic grouping which contains 1, 2, 3 or 4 nitrogen atoms and or one or two oxygen or sulphur atoms as heteroatom ring members—where the number of heteroatoms is 1, 2, 3 or 4—and which is optionally substituted by halogen, cyano, nitro, alkyl, halogenoalkyl, alkenyl, halogenoalkenyl, alkinyl, alkoxy, halogenoalkoxy, alkenyloxy, halogenoalkenyloxy, alkinyloxy, alkylthio, halogenoalkylthio, alkenylthio, halogenoalkenylthio, alkinylthio, alkylsulphinyl, halogenoalkylsulphinyl, alkylsulphonyl, halogenoalkylsulphonyl, amino, alkylamino, dialkylamino, aryl, arylthio, arylamino, aralkyl, formylamino, alkylcarbonylamino, formyl, carbamoyl, alkylcarbonyl and or alkoxycarbonyl;
• R2 represents hydrogen or alkyl,
• R3 represents the groupings —OR4, —OCOR5, —OCOOR6, —OCONR7R8 and —OSO2R9, where
• R4, R5 and R6 independently of one another represent alkyl, alkoxyalkyl, halogenoalkyl, alkenyl, alkinyl, alkylaminoalkyl, dialkylaminoalkyl, optionally substituted cycloalkyl and in each case optionally substituted phenyl or benzyl,
• R7 and R8 independently of one another represent hydrogen, alkyl, alkenyl and in each case optionally substituted phenyl or benzyl and
• R9 represents alkyl or optionally substituted phenyl,
• A represents the groupings —CH2CH2—, (CH2)3 and —CH═CH— and
• Z represents cyano or nitro,
• with the proviso that, if Z represents NO2 and A represents —CH2CH2—, the radical R2 represents hydrogen:
• and the compound of the formula (I) in which
• 85
• R2 H.
• R3 OCH3,
• A —CH2CH2— and
• Z NO2
• is excluded.