Compound having the general structure II: where R 9, R 10, R 11, R 12, R 13, R 14, R 15, R 16, R 17, R 18 are selected from: - H, -C 1 -C 12)-alkyl, -O-(C 1 -C 12)-alkyl, -O-(C 6 -C 20)-aryl, -(C 6 -C 20)-aryl, -S-alkyl, -S-aryl, halogen, COO-(C 1 -C 12)-alkyl, -CONH-(C 1 -C 12)-alkyl, -CO-(C 1 -C 12)-alkyl, -CO-(C 6 -C 20)-aryl, -COOH, -OH, -SO 3 H, -NH 2, -N[(C 1 -C 12)-alkyl] 2; where the alkyl and aryl groups mentioned may be substituted as follows: substituted -(C 1 -C 12)-alkyl groups and substituted -(C 1 -C 12)-alkoxy groups may have one or more substituents, depending on their chain length; the substituents are each independently selected from -(C 3 -C 12)-cycloalkyl,-(C 3 -C 12) -heterocycloalkyl, - (C 6 -C 20) -aryl, fluorine, chlorine, cyano, formyl, acyl and alkoxycarbonyl; substituted - (C 6 -C 20) -aryl groups and -(C 6 -C 20)-aryl- (C 6 -C 20)-aryl groups may have one or more substituents, depending on the ring size; these substituents are each independently selected from -H, -(C 1 -C 12)-alkyl, -O-(C 1 -C 12)-alkyl, -O-(C 6 -C 20)-aryl, -(C 6 -C 20)-aryl, -halogen,-COO-(C 1 -C 12)-alkyl, -CONH-(C 1 -C 12)-alkyl, -(C 6 -C 20 -aryl-CON[(C1-C12)-alkyl] 2, -CO-(C 1 -C 12)-alkyl, -CO-(C 6 -C 20)-aryl, -COOH, -OH, -SO 3 H, -SO 3 Na, -NO 2, -CN, -NH 2, -N[(C 1 -C 12)-alkyl] 2. R 9, R 10, R 11, R 12, R 13, R 14, R 15, R 16, R 17, R 18 are selected from: - H, -C 1 -C 12)-alkyl, -O-(C 1 -C 12)-alkyl, -O-(C 6 -C 20)-aryl, -(C 6 -C 20)-aryl, -S-alkyl, -S-aryl, halogen, COO-(C 1 -C 12)-alkyl, -CONH-(C 1 -C 12)-alkyl, -CO-(C 1 -C 12)-alkyl, -CO-(C 6 -C 20)-aryl, -COOH, -OH, -SO 3 H, -NH 2, -N[(C 1 -C 12)-alkyl] 2; where the alkyl and aryl groups mentioned may be substituted as follows: substituted -(C 1 -C 12)-alkyl groups and substituted -(C 1 -C 12)-alkoxy groups may have one or more substituents, depending on their chain length; the substituents are each independently selected from -(C 3 -C 12)-cycloalkyl,-(C 3 -C 12) -heterocycloalkyl, - (C 6 -C 20) -aryl, fluorine, chlorine, cyano, formyl, acyl and alkoxycarbonyl; substituted - (C 6 -C 20) -aryl groups and -(C 6 -C 20)-aryl- (C 6 -C 20)-aryl groups may have one or more substituents, depending on the ring size; these substituents are each independently selected from -H, -(C 1 -C 12)-alkyl, -O-(C 1 -C 12)-alkyl, -O-(C 6 -C 20)-aryl, -(C 6 -C 20)-aryl, -halogen,-COO-(C 1 -C 12)-alkyl, -CONH-(C 1 -C 12)-alkyl, -(C 6 -C 20 -aryl-CON[(C1-C12)-alkyl] 2, -CO-(C 1 -C 12)-alkyl, -CO-(C 6 -C 20)-aryl, -COOH, -OH, -SO 3 H, -SO 3 Na, -NO 2, -CN, -NH 2, -N[(C 1 -C 12)-alkyl] 2. - H, -C 1 -C 12)-alkyl, -O-(C 1 -C 12)-alkyl, -O-(C 6 -C 20)-aryl, -(C 6 -C 20)-aryl, -S-alkyl, -S-aryl, halogen, COO-(C 1 -C 12)-alkyl, -CONH-(C 1 -C 12)-alkyl, -CO-(C 1 -C 12)-alkyl, -CO-(C 6 -C 20)-aryl, -COOH, -OH, -SO 3 H, -NH 2, -N[(C 1 -C 12)-alkyl] 2; where the alkyl and aryl groups mentioned may be substituted as follows: substituted -(C 1 -C 12)-alkyl groups and substituted -(C 1 -C 12)-alkoxy groups may have one or more substituents, depending on their chain length; the substituents are each independently selected from -(C 3 -C 12)-cycloalkyl,-(C 3 -C 12) -heterocycloalkyl, - (C 6 -C 20) -aryl, fluorine, chlorine, cyano, formyl, acyl and alkoxycarbonyl; substituted - (C 6 -C 20) -aryl groups and -(C 6 -C 20)-aryl- (C 6 -C 20)-aryl groups may have one or more substituents, depending on the ring size; these substituents are each independently selected from -H, -(C 1 -C 12)-alkyl, -O-(C 1 -C 12)-alkyl, -O-(C 6 -C 20)-aryl, -(C 6 -C 20)-aryl, -halogen,-COO-(C 1 -C 12)-alkyl, -CONH-(C 1 -C 12)-alkyl, -(C 6 -C 20 -aryl-CON[(C1-C12)-alkyl] 2, -CO-(C 1 -C 12)-alkyl, -CO-(C 6 -C 20)-aryl, -COOH, -OH, -SO 3 H, -SO 3 Na, -NO 2, -CN, -NH 2, -N[(C 1 -C 12)-alkyl] 2. substituted -(C 1 -C 12)-alkyl groups and substituted -(C 1 -C 12)-alkoxy groups may have one or more substituents, depending on their chain length; the substituents are each independently selected from -(C 3 -C 12)-cycloalkyl,-(C 3 -C 12) -heterocycloalkyl, - (C 6 -C 20) -aryl, fluorine, chlorine, cyano, formyl, acyl and alkoxycarbonyl; substituted - (C 6 -C 20) -aryl groups and -(C 6 -C 20)-aryl- (C 6 -C 20)-aryl groups may have one or more substituents, depending on the ring size; these substituents are each independently selected from -H, -(C 1 -C 12)-alkyl, -O-(C 1 -C 12)-alkyl, -O-(C 6 -C 20)-aryl, -(C 6 -C 20)-aryl, -halogen,-COO-(C 1 -C 12)-alkyl, -CONH-(C 1 -C 12)-alkyl, -(C 6 -C 20 -aryl-CON[(C1-C12)-alkyl] 2, -CO-(C 1 -C 12)-alkyl, -CO-(C 6 -C 20)-aryl, -COOH, -OH, -SO 3 H, -SO 3 Na, -NO 2, -CN, -NH 2, -N[(C 1 -C 12)-alkyl] 2.