Patent ID: 6884907

Claim:
A compound of formula I or a pharmaceutically acceptable equivalent of said compound, wherein: X is —(CO)NHOH; Y is a divalent linking group having from 1 to 9 carbon atom(s); Z is —CR 1 R 2 —, —NR 1 —, —O— or —S—; A 1 , A 2 , A 3 , A 4 and A 5 are independently hydrogen, C 1 -C 9 alkyl, C 2 -C 9 alkenyl, C 2 -C 9 alkynyl, aryl, carbocycle, C 1 -C 9 alkoxy, C 2 -C 9 alkenyloxy, phenoxy, benzyloxy, hydroxy, halo, nitro, cyano, isocyano, —COOR 3 , —COR 3 , —NR 3 R 4 , —SR 3 , —SOR 3 , —SO 2 R 3 , —SO 2 (OR 3 ), —(CO)NR 3 R 4 , —(CO)NR 3 (CH 2 ) n COOH, —NR 3 (CO)R 4 or —(CH 2 ) n COOH, or any adjacent two of A 1 , A 2 , A 3 and A 4 form with the benzene ring a fused ring that is saturated or unsaturated, aromatic or non-aromatic, and carbocyclic wherein at least one of A 1 , A 2 , A 3 , A 4 and A 5 is a —COOH group or contains a —COOH group; n is 1-3; R 1 , R 2 , R 3 and R 4 are independently hydrogen, C 1 -C 9 alkyl, C 2 -C 9 alkenyl, C 2 -C 9 alkynyl, aryl, or carbocycle; and said alkyl, alkenyl, alkynyl, aryl, carbocycle, alkoxy, alkenyloxy, phenoxy, benzyloxy, and fused ring are independently unsubstituted or substituted with one or more substituent(s).