Patent ID: 8466201

Claim:
A compound of formula (I) or a pharmacologically acceptable salt or pro-drug thereof wherein: Ar 1 and Ar 2 are each phenyl; are the same or different and each is an aryl group or a heteroaryl group; a is an integer of from 0 to 5; R 1 is selected from the group consisting of alkyl groups, halogen atoms, haloalkyl groups, alkoxy groups, alkoxycarbonyl groups, carboxyl groups, hydroxyl groups, amino groups, monalkylamino groups, dialkylamino groups, acylamino groups, alkoxycarbonylamino groups, alkylsulphonyl groups, alkylsulphonylamino groups and cyano groups and, where a is greater than 1, each substituent R 1 may be the same or different; b is an integer of from 0 to 5; R 2 is selected from the group consisting of alkyl groups, halogen atoms, haloalkyl groups, alkoxy groups, alkoxycarbonyl groups, carboxyl groups, hydroxyl groups, amino groups, monalkylamino groups, dialkylamino groups, nitro groups, acylamino groups, alkoxycarbonylamino groups, alkylsulphonyl groups, alkylsulphonylamino groups and cyano groups and where b is greater than 1, each substituent R 2 may be the same or different; V is selected from the group consisting of (CR 3a R 3b ) p SO 2 N(R 3 b)X; W is NR 4a ; X is a substituent selected from the group consisting of hydroxyalkyl groups, and polyalkylene glycol residues; Y and Z are each a group of formula (CR 5a R 5b ) n1 , wherein each n1 is 0; and p is an integer of from 0 to 2, and wherein V is substituting said Ar 1 at an ortho position with respect to said Z or said W.