Patent ID: 7259168

Claim:
Compound of the formula (I) where R 1 , R 2 are either identical or different and independently of one another are hydrogen or a linear or branched C1-C8-alkyl group, or together with the C atoms to which they are bonded, form a 5 to 7-membered monounsaturated cycloalkenyl ring, R 3 , R 4 are either identical or different and independently of one another are hydrogen, a hydroxyl group, a linear or branched C 1 -C 8 -alkyl group, a C 1 -C 8 -alkoxy group or halogen, or together with the C atoms to which they are bonded, form a 5- to 8-membered ring which besides carbon atoms can optionally contain one or more oxygen atoms, R 5 , R 6 can be identical or different and independently of one another are hydrogen, a linear or branched C 1 -C 8 -alkyl group which can be substituted by one or more hydroxyl, C 1 -C 8 -alkoxy, amine, mono(C 1 -C 8 -alkyl)amine, di(C 1 -C 8 -alkyl)amine, nitrilo, N-morpholino, phenyl, benzodioxole or pyridyl groups, or a C 4 -C 7 -cycloalkyl group, or together with the nitrogen atom to which they are bonded, form a saturated heterocyclic ring which optionally contains one or more further nitrogen and/or oxygen atoms and which is substituted by one or more C 1 -C 8 -alkyl, hydroxyl, C 1 -C 8 -alkoxy, C 1 -C 8 -alkylol, C 1 -C 6 -oligohydroxyalkyl, amino, mono(C 1 -C 8 -alkyl)amino, di(C 1 -C 8 -alkyl)amino, —SO 2 R 7 or —C(O)R 7 groups, R 7 is a C 1 -C 8 -alkyl group, C 1 -C 8 -fluoroalkyl group, a phenyl group which is optionally substituted by alkyl, halogen or nitrile groups or a benzodioxole group.