Use of a compound according to the general formula (I) ** Formula ** wherein the substituents R1, R2, R3, R4 have the following meaning: R1 and R2 can independently mean: (i) hydrogen (ii) hydroxyl (iii) halogen (iv) alkyl, wherein the alkyl radical is saturated and may be composed of 1 to 8 C atoms, (v) unsubstituted or substituted aryl, wherein the aryl radical may be mono- or polysubstituted in the same or different manner with F, Cl, Br, I, CF3, CN, NH2, NH-alkyl, NH-cycloalkyl, NH-heterocyclyl, NH-aryl, NH-heteroaryl, NH-alkyl-cycloalkyl, NH- alkyl-heterocyclyl, NH-alkyl-aryl, NH-alkyl-heteroaryl, NH-alkyl-NH2, NH-alkyl-OH, N (alkyl) 2, NHC (O) -alkyl, NHC (O) -cycloalkyl, NHC ( O) -heterocyclyl, NHC (O) -aryl, NHC (O) -heteroaryl, NHC (O) -alkyl-aryl, NHC (O) -alkyl-heteroaryl, NHSO2-alkyl, NHSO2-cycloalkyl, NHSO2-heterocyclyl, NHSO2 -aryl, NHSO2-heteroaryl, NHSO2-alkyl-aryl, NHSO2-alkyl-heteroaryl, NO2 , SH, S-alkyl, S-aryl, S-heteroaryl, OH, OCF3, O-alkyl, O-cycloalkyl, O-heterocyclyl, O-aryl, O-heteroaryl, O-alkyl-cycloalkyl, O-alkyl-heterocyclyl , O-alkyl-aryl, O-alkyl-heteroaryl, O-alkyl-OH, O- (CH2) nO, OC (O) -alkyl, OC (O) -cycloalkyl, OC (O) -heterocyclyl, OC (O ) -aryl, OC (O) -heteroaryl, OC (O) -alkyl-aryl, OC (O) -alkyl-heteroaryl, OSO3H, OSO2-alkyl, OSO2-cycloalkyl, OSO2-heterocyclyl, OSO2-aryl, OSO2-heteroaryl , OSO2-alkyl-aryl, OSO2-alkyl-heteroaryl, OP (O) (OH) 2, C (O) -alkyl, C (O) -aryl, C (O) -heteroaryl, CO2H, CO2-alkyl, CO2 -cycloalkyl, CO2-heterocyclyl, CO2-aryl, CO2-heteroaryl, CO2- alkyl-cycloalkyl, CO2-alkyl-heterocyclyl, CO2-alkyl-aryl, CO2-alkyl-heteroaryl, C (O) -NH2, C (O) NH-alkyl, C (O) NH-cycloalkyl, C (O) NH-heterocyclyl, C (O) NH-aryl, C (O) NH-heteroaryl, C (O) NH-alkyl-cycloalkyl, C (O) NH-alkyl-heterocyclyl, C (O) NH-alkyl-aryl, C (O) NH-alkyl-heteroaryl, C (O) N (alkyl) 2, C (O) N (cycloalkyl) 2, C (O) N (aryl) 2, C (O) N (heteroaryl) 2, SO-alkyl, SO-aryl, SO2-alkyl, SO2-aryl, SO2NH2, SO2NH-alkyl, SO2NH-aryl, SO2NH-heter
