Patent ID: 8431580

Claim:
A compound of formula (I): or a pharmaceutically acceptable salt thereof, wherein: R 1 is selected from: (1) C 1-8 alkyl; (2) C 3-8 cycloalkyl-C 0-6 alkyl; (3) aryl-C 1-6 alkyl; wherein in groups (1) to (3) any alkyl group may be optionally substituted with one or more halogen groups and the C 3-8 cycloalkyl group may be optionally substituted with one or more substituents selected from C 1-4 alkyl, halogen and aryl; (4) a group of formula (i) (5) a group of formula (ii) R 2 and R 3 form, together with the N atom to which they are bound, a saturated heterocyclic group that can be 4- to 7-membered monocyclic, 7- to 8-membered bridged bicyclic, or 8- to 12-membered fused bicyclic, wherein said heterocyclic group can contain up to two N atoms and does not contain any other heteroatoms, and can be optionally substituted with one or more substituents independently selected from C 1-4 alkyl and NR a R b , provided that the heterocyclic group either contains 2 N atoms and is not substituted with an NR a R b group, or contains 1 N atom and is substituted with one NR a R b group; or R 2 is selected from H and C 1-4 alkyl, and R 3 is selected from azetidinyl, pyrrolidinyl, piperidinyl and azepanyl, each of which may be optionally substituted with one or more C 1-4 alkyl groups; R a is selected from H and C 1-4 alkyl; R b is selected from H and C 1-4 alkyl; or R a and R b form, together with the N atom to which they are bound, an azetidinyl, pyrrolidinyl, piperidinyl or azepanyl group, that may be optionally substituted with one or more C 1-4 alkyl groups; R 4 and R 5 are each independently selected from H and C 1-4 alkyl, and additionally one of the R 4 or R 5 groups may be selected from aryl or C 3-6 cycloalkyl-C 0-6 alkyl, and additionally two R 4 and R 5 groups on a same C atom may be bound together forming with said C atom a C 3-8 cycloalkyl group; R 6 is a group selected from C 1-8 alkyl, C 3-8 cycloalkyl-C 0-6 alkyl and aryl-C 0-4 alkyl, wherein any of said alkyl groups may be optionally substituted with one or more halogen groups and said C 3-8 cycloalkyl group may be optionally substituted with one or more substituents independently selected from C 1-4 alkyl, halogen and aryl; R 7 is a saturated monocyclic 4- to 7-membered heterocyclic ring containing one O atom and not containing any other additional heteroatoms, wherein said ring may be bound to the rest of the molecule through any available C atom, and wherein R 7 may be optionally substituted with one or more groups independently selected from C 1-4 alkyl and halogen; n is 1, 2 or 3; p is 0, 1 or 2; and aryl is a phenyl group optionally substituted with one or more groups independently selected from C 1-4 alkyl, halogen, C 1-4 alkoxy, C 1-4 haloalkyl, C 1-4 haloalkoxy, cyano and amino.