Patent ID: 6987119

Claim:
A compound of formula (I): wherein X is O, CH 2 , S or NH, or the moiety X—R 1 is hydrogen; V is CH or N; R 1 is hydrogen, C 1-6 alkyl, C 3-7 cycloalkyl, aryl, arylC 1-6 alkyl, heterocyclyl, heterocyclylC 1-6 alkyl, heteroaryl or heteroarylC 1-6 alkyl any of which except hydrogen may be optionally substituted; R 2 and R 3 independently represent hydrogen, C 1-6 alkyl, C 3-7 cycloalkyl, aryl, arylC 1-6 alkyl, heteroaryl, heteroarylC 1-6 alkyl, heterocyclyl, or heterocyclylC 1-6 alkyl any one of which except hydrogen may be optionally substituted, or R 2 and R 3 together with the nitrogen atom to which they are attached form a 4- to 10-membered optionally substituted monocyclic or bicyclic ring; Ar is an aryl or heteroaryl ring either of which may be optionally substituted; one of X 1 and X 2 is N and the other is NR 4 , wherein R 4 is hydrogen, C 1-6 alkyl, or arylC 1-6 alkyl; or a pharmaceutically acceptable salt thereof.