Patent ID: 7300955

Claim:
A compound of formula II: wherein: m is 0 or 1; n is 0 or 1; p is an integer in the range 1-6; L is a bivalent linking group comprising up to 20 skeletal atoms selected from carbon and oxygen; R 1b represents H, C 1-4 alkyl or OH; R 1c represents H or C 1-4 alkyl; Ar 1 and Ar 2 independently represent phenyl or heteroaryl, either of which bears 0-3 substituents independently selected from halogen, CN, NO 2 , CF 3 , CHF 2 , OH, OCF 3 , CHO, CH═NOH, C 1-4 alkoxy, C 1-4 alkoxycarbonyl, C 2-6 acyl, C 2-6 alkenyl and C 1-4 alkyl which optionally bears a substituent selected from halogen, CN, NO 2 , CF 3 , OH and C 1-4 alkoxy; or a pharmaceutically acceptable salt thereof.