Patent ID: 7060823

Claim:
A compound of the formula (I) wherein R 1 and R 2 are either identical or different and each is, independently of one another, hydrogen or a C 1 –C 8 -alkyl group, R 3 and R 4 are either identical or different and each is, independently of one another, hydrogen, a hydroxyl group, a linear or branched C 1 –C 8 -alkyl group, a C 1 –C 8 -alkoxy group or halogen, or are together with the C atoms to which they are bonded a 5- to 8-membered ring which besides carbon atoms can optionally contain one or more oxygen atoms, R 5 and R 6 are either identical or different and each is, independently of one another, hydrogen, a linear or branched C 1 –C 8 -alkyl group which is optionally 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 are together with the nitrogen atom to which they are bonded a saturated heterocyclic ring which optionally contains one or more further nitrogen and/or oxygen atoms and which is optionally 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, and R 7 is a C 1 –C 8 -alkyl group, a C 1 –C 8 -fluoroalkyl group, or a phenyl group which is optionally substituted by an alkyl group, halogen, a nitrile group or a benzodioxole group, or a physiologically acceptable salt thereof.