Patent ID: 7294650

Claim:
A compound of formula (I) or a salt, solvate, or physiologically functional derivative thereof, wherein: m is an integer of from 2 to 8; n is an integer of from 3 to 11; with the proviso that m+n is 5 to 19; x is zero and y is an integer of 2 or 3 or y is zero and x is an integer of 2 or 3; z is zero or an integer of 1 or 2; R a and R b are independently selected from hydrogen and C 1-4 alkyl; R 1 and R 2 are independently selected from hydrogen, C 1-6 alkyl, C 1-6 alkoxy, halo, phenyl, and C 1-6 haloalkyl; R 3 and R 4 are independently selected from hydrogen and C 1-4 alkyl with the proviso that the total number of carbon atoms in R 3 and R 4 is not more than 4; Ar is a group selected from wherein R 6 represents hydrogen, halogen, —(CH 2 ) q OR 9 , —NR 9 C(O)R 10 , —NR 9 SO 2 R 10 , —SO 2 NR 9 R 10 , —NR 9 R 10 , —OC(O)R 11 or —OC(O)NR 9 R 10 , and R 5 represents hydrogen, halogen or C 1-4 alkyl; or R 6 represents —NHR 12 and R 5 and —NHR 12 together form a 5- or 6-membered heterocyclic ring; R 7 represents hydrogen, halogen, —OR 9 or —NR 9 R 10 ; R 8 represents hydrogen, halogen, haloC 1-4 alkyl, —OR 9 , —NR 9 R 10 , —OC(O)R 11 or —OC(O)NR 9 R 10 ; R 9 and R 10 independently represent hydrogen or C 1-4 alkyl or R 9 and R 10 together with the nitrogen atom to which they are attached form a 5-, 6- or 7-membered nitrogen-containing ring, R 11 represents an aryl (eg phenyl or naphthyl) group which may be unsubstituted or substituted by one or more substituents selected from halogen, C 1-4 alkyl, hydroxy, C 1-4 alkoxy or halo C 1-4 alkyl; and q is zero or an integer from 1 to 4.