Patent ID: 8227502

Claim:
A compound of general formula (I) and tautomers, diastereomers, enantiomers, and mixtures thereof, wherein R 1 is selected from in which @ denotes the position where R 1 is attached to the nitrogen atom; Z is a saturated or unsaturated, straight or branched chain acyclic hydrocarbon group having 1, 2, 3, 4 or 5 carbon atoms; R 2 is selected from an amino, alkylamino, dialkylamino, or a guanidine group; R 3 , R 4 and R 5 are the same or different and are independently selected from hydrogen, halogen, trihaloalkyl, alkyl having 1, 2, 3, 4 or 5 carbon atoms, electron donor groups selected from alkoxy having 1, 2, 3, 4 or 5 carbon atoms, trihaloalkoxy, hydroxy or amino, electron acceptor groups selected from cyano, sulphonic, nitro, or amide; R 6 , R 7 and R 8 , which may be the same or different, are selected from hydrogen, halogen, trihaloalkyl, alkyl having 1, 2, 3, 4 or 5 carbon atoms, electron donor groups selected from alkoxy having 1, 2, 3, 4 or 5 carbon atoms, trihaloalkoxy, hydroxy or amino, electron acceptor groups selected from cyano, sulphonic, nitro, or amide; and R 9 , R 10 and R 11 , which may be the same or different, are selected from hydrogen, halogen, trihaloalkyl, alkyl having 1, 2, 3, 4 or 5 carbon atoms, electron donor groups selected from alkoxy having 1, 2, 3, 4 or 5 carbon atoms, trihaloalkoxy, hydroxy or amino, electron acceptor groups selected from cyano, sulphonic, nitro, or amide; and salts thereof.