Compounds of the general formula in which R 1a, R 1b independently of one another represent H, C 1 -C 5 -alkyl, C 2 -C 5 -alkenyl, C 2 -C 5 -alkynyl, C 3 -C 6 -cycloalkyl-(CH 2) m, C 3 -C 6 -heterocycloalkyl-(CH 2) n, C 1 -C 5 -alkoxy-C 1 -C 3 -alkyl, C 3 -C 6 -cycloalkoxy-C 1 -C 3 -alkyl, amino-C 1 -C 3 -alkyl, C 1 -C 5 -alkylamino-C 1 -C 3 -alkyl, C 1 -C 5 -dialkylamino-C 1 -C 3 -alkyl or cyano, where the optionally present heterocyclic unit is preferably selected from the group consisting of oxetane, tetrahydrofuran, tetrahydropyran, 1,4-dioxane, morpholine, azetidine, pyrrolidine, piperazine and piperidine and where optionally present alkyl, cycloalkyl or heterocycloalkyl radicals can be mono- or polysubstituted, identically or differently by halogen, C 1 -C 5 -alkyl, hydroxyl, carboxyl, carboxy-C 1 -C 5 -alkyl, C 1 -C 5 -alkoxycarbonyl-C 1 -C 5 -alkyl or C 1 -C 5 -alkylsulphonyl, R 4 represents H, F, Cl, C 1 -C 2 -alkyl, C 3 -C 5 -cycloalkyl, C 1 -C 2 -alkoxy or C 3 -C 4 -cycloalkylmethyl, where the corresponding alkyl or cycloalkyl unit can be mono- or polysubstituted, identically or differently by halogen or hydroxyl, A represents RO-CO(CH 2) p, where R represents H or C 1 -C 2 -alkyl, m is 0, 1, 2 or 3, n is 0, 1, 2 or 3, p is 0, and B is selected from the following structures, R 6, represents H, F, Cl, CH 3, CF 3 CH 3 O or CF 3 O, R 7, R 8 in each case independently of one another represent H, F, Cl, cyano, SF 5, C 1 -C 3 -alkyl, C 3 -C 5 -cycloalkyl, C 1 -C 2 -alkoxy or C 3 -C 4 -cycloalkylmethyl, where the corresponding alkyl or cycloalkyl unit can be mono- or polyhalogenated, and R 9 represents C 1 -C 5 -alkyl, C 2 -C 5 -alkenyl, C 2 -C 5 -alkynyl, C 3 -C 6 -cycloalkyl-(CH 2) n, C 3 -C 6 -heterocycloalkyl-(CH 2) n, or C 1 -C 7 -alkoxy-C 2 -C 5 -alkyl, where the optionally present heterocyclic unit is selected from the group consisting of oxetane, tetrahydrofuran, tetrahydropyran, morpholine, pyrrolidine and piperidine and where the optionally present alkyl, cycloalkyl or heterocycloalkyl units can be mono- or polysubstituted, identically or differently by halogen, C 1 -C 2 -alkyl, C 1 -C 2 -alkoxy or carboxyl, and their isomers, diastereomers, enantiomers, solvates and salts or cyclodextrin clathrates. R 1a, R 1b independently of one another represent H, C 1 -C 5 -alkyl, C 2 -C 5 -alkenyl, C 2 -C 5 -alkynyl, C 3 -C 6 -cycloalkyl-(CH 2) m, C 3 -C 6 -heterocycloalkyl-(CH 2) n, C 1 -C 5 -alkoxy-C 1 -C 3 -alkyl, C 3 -C 6 -cycloalkoxy-C 1 -C 3 -alkyl, amino-C 1 -C 3 -alkyl, C 1 -C 5 -alkylamino-C 1 -C 3 -alkyl, C 1 -C 5 -dialkylamino-C 1 -C 3 -alkyl or cyano, where the optionally present heterocyclic unit is preferably selected from the group consisting of oxetane, tetrahydrofuran, tetrahydropyran, 1,4-dioxane, morpholine, azetidine, pyrrolidine, piperazine and piperidine and where optionally present alkyl, cycloalkyl or heterocycloalkyl radicals can be mono- or polysubstituted, identically or differently by halogen, C 1 -C 5 -alkyl, hydroxyl, carboxyl, carboxy-C 1 -C 5 -alkyl, C 1 -C 5 -alkoxycarbonyl-C 1 -C 5 -alkyl or C 1 -C 5 -alkylsulphonyl, R 4 represents H, F, Cl, C 1 -C 2 -alkyl, C 3 -C 5 -cycloalkyl, C 1 -C 2 -alkoxy or C 3 -C 4 -cycloalkylmethyl, where the corresponding alkyl or cycloalkyl unit can be mono- or polysubstituted, identically or differently by halogen or hydroxyl, A represents RO-CO(CH 2) p, where R represents H or C 1 -C 2 -alkyl, m is 0, 1, 2 or 3, n is 0, 1, 2 or 3, p is 0, and B is selected from the following structures, R 6, represents H, F, Cl, CH 3, CF 3 CH 3 O or CF 3 O, R 7, R 8 in each case independently of one another represent H, F, Cl, cyano, SF 5, C 1 -C 3 -alkyl, C 3 -C 5 -cycloalkyl, C 1 -C 2 -alkoxy or C 3 -C 4 -cycloalkylmethyl, where the corresponding alkyl or cycloalkyl unit can be mono- or polyhalogenated, and R 9 represents C 1 -C 5 -alkyl, C 2 -C 5 -alkenyl, C 2 -C 5 -alkynyl, C 3 -C 6 -cycloalkyl-(CH 2) n, C 3 -C 6 -heterocycloalkyl-(CH 2) n, or C 1 -C 7 -alkoxy-C 2 -C 5 -alkyl, where the optionally present heterocyclic unit is selected from the group consisting of oxetane, tetrahydrofuran, tetrahydropyran, morpholine, pyrrolidine and piperidine and where the optionally present alkyl, cycloalkyl or heterocycloalkyl units can be mono- or polysubstituted, identically or differently by halogen, C 1 -C 2 -alkyl, C 1 -C 2 -alkoxy or carboxyl,