1H-Quinazoline-2,4-Diones

A compound of the formula (I)

• wherein
• R1 represents CF3, CHF2, CH12F, CH3CHF—, CH3CF2—, ethyl or iso-propyl and
• R2 represents alkyl substituted by one or more substituents, the substituents being selected from the group consisting of halogen, nitro, cyano, acyl, hydroxy, oxo (═O), alkoxy, cycloalkoxy, acyloxy, alkoxycarbonyloxy, amino, alkylamino, dialkylamino, formyl, acylamino, alkoxycarbonylamino or
• R2 represents heterocyclylalkyl substituted by one or more substituents, the substituents being selected from the group consisting of halogen, nitro, cyano, hydroxy, alkoxy, alkylcarbonyloxy, alkoxycarbonyloxy, amino, alkylamino, dialkylamino, alkoxycarbonylamino,
• R2 represents phenyl substituted by one or more substituents, the substituents being selected from the group consisting of cyano, hydroxy, alkanediyl, alkenediyl, alkoxy, hydroxyalkyl, formyl, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy, alkoxycarbonyloxy, amino, alkylamino, dialkylamino, aminoalkyl, alkylaminoalkyl, dialkylaminoalkyl, alkoxycarbonylamino, or
• R2 represents heterocyclyl optionally substituted by one or more substituents, the substituents being selected from the group consisting of halogen, hydroxy, amino, nitro, cyano, alkyl, hydroxalkyl, alkoxyalkyl, aminoalkyl, alkylaminoalkyl, dialkylaminoalkyl, acyl, alkoxy, acyloxy, alkoxycarbonyloxy, amino, alkylamino, dialkylamino, acylamino, alkoxycarbonylamino and whereby the heterocycle is bound to the phenyl-ring by a carbon-atom
• and their salts.