Patent ID: 8754124

Claim:
A compound of formula (I or II): wherein: R 1 , R 2 and R 3 are each independently H, C 1 -C 10 alkyl, C 1 -C 10 alkenyl, C 1 -C 10 alkynyl, C 1 -C 15 optionally substituted arylalkyl, —(CH 2 ) n —COOR, —(CH 2 ) n —CONRR′, —(CH 2 ) n —NRR′, —(CH 2 ) n —NH(C═NH)NRR′, —(CH 2 ) n —NRCOR′, —(CH 2 ) n —NRCOOR′, —(CH 2 ) n —OR, —(CH 2 ) n —SR, —(CH 2 ) n —SO m R, —(CH 2 ) n —PO m R, wherein n and m may be any number between 0 and 6 and R and R′ may be a H, C 1 -C 10 alkyl, C 1 -C 10 alkenyl, C 1 -C 10 alkynyl, or C 1 -C 15 optionally substituted arylalkyl group or wherein R is independently a H, C 1-10 alkyl, C 1-10 alkenyl, C 1-10 alkynyl, C 1-15 optionally substituted arylalkyl, hydroxyl, C 1-10 alkoxy, amino, C 1-10 monoalkylamino, C 1-10 dialkylamino, guanidine, nitro, carboxylic acid, C 1-10 alkylcarbonyl, C 1-15 arylcarbonyl, halogen, sulfhydryl, C 1-10 alkylsulfenyl, C 1-10 alkylsulfinyl, C 1-10 alkylsulfonyl, sulfonic acid, sulfate, phosphenyl, phosphinyl, phosphonic acid, phosphate group; X is Y is —(CH 2 ) n COOR 4 , —(CH 2 ) n CONR 4 R 5 , —(CH 2 ) n NR 4 R 5 , —(CH 2 ) n —NR 4 R 5 , —(CH 2 ) n —NH(C═NH)NR 4 R 5 , —(CH 2 ) n —NR 4 COR 5 , —(CH 2 ) n —NR 4 COOR 5 ,—(CH 2 )—NR 4 CONR 5 , —(CH 2 ) n —OR 4 , —(CH 2 ) n —SR 4 , —(CH 2 ) n —SO m R 4 , —(CH 2 ) n —PO m R 4 , wherein n and m may be any number between 0 and 6, R 4 and R 5 are independently selected from —H, C 1 -C 10 alkyl, C 1 -C 10 alkenyl,C 1 -C 10 alkynyl, or C 1 -C 15 optionally substituted arylalkyl group; and A, A′ and A″ are independently —O—, —S—, —NR—, —(CH 2 ) n —, —CO— wherein n may be any number between 1-6.