A compound according to formula: or a pharmacologically acceptable salt, solvate, or hydrate thereof, wherein A is a C 1 -C 10 alkyl; B 1 is represented by and B 2 is represented by wherein R 3 and R 4 are independently selected from a hydrogen atom, a halogen atom, a hydroxy, a nitro, a cyano, an amino, a mercapto, a C 1 -C 6 alkyl, a C 2 -C 6 alkenyl, a C 2 -C 6 alkynyl, a heteroalkyl, or a heteroalkylcycloalkyl group, wherein the alkyl, alkenyl, alkynyl, heteroalkyl, or heteroalkylcycloalkyl group can be substituted with from 1 to 3 substituents which substituents are each independently selected from halogen atom, hydroxy, nitro, amino, alkoxy, carboxyl, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, aryl, sulfonyl, and phosphoryl, wherein the heteroalkyl group is an alkyl, alkenyl or alkynyl group, in which one or more carbon atoms have been replaced each independently of the others by an oxygen, sulphur or nitrogen atom; and the heteroalkylcycloalkyl group is an alkylcycloalkyl group in which one or more carbon atoms have been replaced each independently of the others by an oxygen, nitrogen, silicon, selenium, phosphorus or sulphur atom, wherein an alkylcycloalkyl group is a group containing both cycloalkyl and an alkyl, alkenyl or alkynyl group wherein the cyclic groups are optionally substituted and wherein the expression alkylcycloalkyl also encompasses cycloalkylalkyl groups, wherein a cycloalkyl is a saturated or partially unsaturated cyclic group that contains one or more rings; wherein the expressions alkenyl and alkynyl refer to at least partially unsaturated, straight-chain or branched hydrocarbon groups that contain from 2 to 20 carbon atoms. A is a C 1 -C 10 alkyl; B 1 is represented by and B 2 is represented by wherein R 3 and R 4 are independently selected from a hydrogen atom, a halogen atom, a hydroxy, a nitro, a cyano, an amino, a mercapto, a C 1 -C 6 alkyl, a C 2 -C 6 alkenyl, a C 2 -C 6 alkynyl, a heteroalkyl, or a heteroalkylcycloalkyl group, wherein the alkyl, alkenyl, alkynyl, heteroalkyl, or heteroalkylcycloalkyl group can be substituted with from 1 to 3 substituents which substituents are each independently selected from halogen atom, hydroxy, nitro, amino, alkoxy, carboxyl, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, aryl, sulfonyl, and phosphoryl, wherein the heteroalkyl group is an alkyl, alkenyl or alkynyl group, in which one or more carbon atoms have been replaced each independently of the others by an oxygen, sulphur or nitrogen atom; and the heteroalkylcycloalkyl group is an alkylcycloalkyl group in which one or more carbon atoms have been replaced each independently of the others by an oxygen, nitrogen, silicon, selenium, phosphorus or sulphur atom, wherein an alkylcycloalkyl group is a group containing both cycloalkyl and an alkyl, alkenyl or alkynyl group wherein the cyclic groups are optionally substituted and wherein the expression alkylcycloalkyl also encompasses cycloalkylalkyl groups, wherein a cycloalkyl is a saturated or partially unsaturated cyclic group that contains one or more rings; wherein the expressions alkenyl and alkynyl refer to at least partially unsaturated, straight-chain or branched hydrocarbon groups that contain from 2 to 20 carbon atoms.