| abstract |
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 2 to 5; with the proviso that m + n is 4 to 10; R4 and R5 are independently selected from hydrogen and C1-4 alkyl with the proviso that the total number of carbon atoms in R4 and R5 is not more than 4; R6 and R7 are independently selected from hydrogen and C1-4alkyl with the proviso that the total number of carbon atoms in R6 and R7 is not more than 4, and Ar1 is a group selected from (a), (b), (c) and (d). |