Patent ID: 7709491

Claim:
A compound of the formula in which R 1 , R 2 and R 3 are independently of one another hydrogen, alkyl, alkoxy, carboxyl, alkylcarbonyl, alkoxycarbonyl, aminocarbonyl, trifluoromethyl, halogen, cyano, hydroxy or nitro, R 4 and R 5 are independently of one another hydrogen, alkyl, alkoxy, cyano, halogen, nitro, trifluoromethyl or trifluoromethoxy, R 6 is alkyl, cyano, halogen, nitro or trifluoromethyl, R 7 and R 8 are independently of one another hydrogen, halogen, alkyl or alkoxy, and R 9 is aryl or 1,3-benzodioxol-5-yl in which aryl and 1,3-benzodioxol-5-yl may be substituted by 1 to 3 substituents, where the substituents are selected independently of one another from the group consisting of alkyl, alkoxy, alkylthio, carboxyl, alkylcarbonyl, alkoxycarbonyl, aminocarbonyl, trifluoromethyl, halogen, carbamoyl, cyano, hydroxy, amino, alkylamino, nitro and optionally hydroxy-substituted alkyl, or a salt thereof.