Patent ID: 7045544

Claim:
A compound of the formula (I) in which R 1 represents (C 5 –C 15 )-alkyl, (C 5 –C 15 )-alkenyl or (CH 2 ) n G, in which G represents cycloalkyl or represents a 5- or 6-membered heterocycle having one or two oxygen atoms, n represents 0 to 4 and alkyl, alkenyl and G are optionally substituted by 1 to 3 substituents, independently of one another selected from the group consisting of halogen, hydroxyl, trifluoromethyl, trifluoromethyl, cyano, nitro, alkyl, alkoxy, alkylthio, carboxyl, alkoxycarbonyl, amino, alkylamino, alkylcarbonylamino and alkylaminocarbonyl, R 2 represents (C 1 –C 8 )-alkyl, (CH 2 ) m cycloalkyl, (CH 2 ) m heterocyclyl, (CH 2 ) m aryl or (CH 2 ) m heteroaryl, in which m represents 0 to 4 and alkyl, cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally substituted by 1 to 3 substituents, independently of one another selected from the group consisting of halogen, hydroxyl, trifluoromethyl, trifluoromethyl, cyano, nitro, alkyl, alkoxy, alkylthio, alkoxycarbonyl, amino, alkylamino, alkylcarbonylamino, alkylaminocarbonyl, alkylaminosulphonyl and alkylsulphonylamino, R 3 represents (CH 2 ) o cycloalkyl, (CH 2 ) o heterocyclyl, (CH 2 ) o aryl or (CH 2 ) o heteroaryl, in which o represents 0 to 4 and cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally substituted by 1 to 3 substituents, independently of one another selected from the group consisting of halogen, hydroxyl, trifluoromethyl, trifluoromethyl, cyano, nitro, alkyl, alkoxy, alkylthio, hydroxycarbonyl, alkoxycarbonyl, amino, alkylamino, alkylcarbonylamino, alkylaminocarbonyl, alkylaminosulphonyl and alkylsulphonylamino, R 4 represents hydrogen, (C 1 –C 4 )-alkyl, (CH 2 ) p cycloalkyl, (CH 2 ) p heterocyclyl, (CH 2 ) p aryl or (CH 2 ) p heteroaryl, in which p represents 0 to 4 and alkyl, cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally substituted by 1 to 3 substituents, independently of one another selected from the group consisting of halogen, hydroxyl, trifluoromethyl, trifluoromethyl, cyano, nitro, alkyl, alkoxy, alkylthio, hydroxycarbonyl, alkoxycarbonyl, amino, alkylamino, alkylcarbonylamino, alkylaminocarbonyl, alkylaminosulphonyl and alkylsulphonylamino, or a salt, hydrate, hydrate of a salt or solvate thereof.