Patent ID: 7056934

Claim:
A compound of formula (I): or a pharmaceutically acceptable salt or solvate thereof, wherein: R 1 and R 2 are each independently hydrogen, halo or (C 1 –C 3 )alkyl; and R 3 is a C-linked 5- or 6-membered heteroaryl incorporating one to three nitrogen atoms, said heteroaryl being substituted by hydroxy(C 1 –C 4 )alkyl and said heteroaryl optionally being further substituted independently by one to three hydroxy, halo, (C 1 –C 4 )alkyl or (C 1 –C 4 )alkoxy; or phenyl substituted by hydroxy(C 1 –C 4 )alkyl or hydroxy(C 2 –C 4 )alkoxy and said phenyl optionally being further substituted independently by one to three hydroxy, hydroxy(C 1 –C 3 )alkyl, (C 1 –C 4 )alkoxy, (C 1 –C 4 )alkyl or halo.