| abstract |
Ligand presenting one of both general structures I or II: ** Formula ** R1, R2, R3, R4, R5, R6, R7, R8 being selected respectively, independently from each other, starting from: -H, - (C1-C12) -alkyl, -O- (C1-C12) -alkyl, -O- (C6-C20) -aryl, - (C6-C20) -aryl, halogen, COO- (C1-C12) -alkyl , CONH- (C1-C12) -alkyl, - (C6-C20) - aryl-CON [(C1-C12) -alkyl] 2, -CO- (C1-C12) -alkyl, -CO- (C6-C20 ) -aryl, -COOH, -OH, -SO3H; -SO3Na, -NO2, -CN, -NH2; - N [(C1-C12) -alkyl] 2; X and Y being selected respectively, independently from each other, from: - (C1-C12) -alkyl, - (C6-C20) -aryl, - (C6-C20) -aryl- (C1-C12) - alkyl, - (C6-C20) -aryl-O- (C1-C12) -alkyl, - (C1-C12) -alkyl (C6-C20) -aryl, - (C6-C20) -aryl-COO- (C1 -C12) -alkyl, - (C6-C20) -aryl-CONH- (C1-C12) -alkyl, - (C6-C20) -aryl-CON [(C1-C12) - alkyl] 2, - (C4- C20) -heteroaryl, - (C4-C20) -heteroaryl- (C1-C12) -alkyl, - (C5-C8) -cycloalkyl, - (C4-C20) -aryl-CO- (C6-C20) - aryl, Z being selected from: - (C1-C12) -alkyl, - (C6-C20) -aryl, - (C6-C20) -aryl- (C1-C12) -alkyl, - (C1-C12) -alkyl (C6-C20) -aryl, - (C4-C20) -heteroaryl-, - (C6-C20) -aryl-CO- (C6-C20) -aryl, - (C6-C20) -aryl- (C6-C20 ) -aryl-; said alkyl, heteroalkyl, cycloalkyl, heterocycloalkyl, aryl- and heteroaryl groups may be substituted. |