Patent ID: 7408065

Claim:
A compound of formula (III) or a pharmaceutically acceptable salt thereof, wherein R 1 is selected from halogen or C 1-6 alkyl, X is C(O)NH or NHC(O); n is 1; each R 5 and each R 6 are independently selected from hydrogen or C 1-3 alkyl, or R 5 and R 6 together with the carbon atom to which they are both attached forms a C 3-6 cycloalkcyl ring, R 2 is an optionally substituted cycloalkyl group containing 5 to 7 carbon atoms; and R 3 is hydrogen, or a group R 7 , OR 7 , SR 7 , NR 7 R 8 , where R 7 and R 8 are independently selected from hydrogen, optionally substituted C 1-10 alkyl, an optionally substituted cycloalkyl or an optionally substituted heterocyclic group, or R 7 and R 8 together with the nitrogen to which they are attached form an optionally substituted heterocyclic ring which may contain additional heteroatoms, and may further comprise bridging groups.