Patent ID: 7855218

Claim:
A compound of formula (I), or a pharmaceutically acceptable salt thereof wherein R 1 and R 2 are independently hydrogen, C 1-6 alkyl or C 3-6 cycloalkylC 1-6 alkyl; or such R 1 and R 2 , together with the nitrogen to which they are attached, form an unsubstituted 3-, 4-, 5- or 6-membered saturated ring; q is 1 or 2; R 3 and R 4 are hydrogen; or when q is 1, R 3 and R 4 , together with the interconnecting atoms, form a cyclopropane ring; or such R 3 and R 1 , together with the interconnecting atoms form a saturated or unsaturated 5- to 6-membered ring; X is carbon or nitrogen; n is 0, 1 or 2, wherein when present each R 5 is independently selected from C 1-3 alkyl, halogen, cyano, haloC 1-3 alkyl, hydroxy, C 1-3 alkoxy and C 1-3 haloalkoxy; either R 6 or R 7 is —O—R 8 , —OCHR 9 R 8 , NCH 2 R 8 or (CH 2 ) 2 R 8 and the other R 6 or R 7 is hydrogen or R 5 ; wherein R 8 is a phenyl ring optionally substituted by one or more groups independently selected from C 1-3 alkyl, halogen, cyano, haloC 1-3 alkyl, hydroxy, C 1-3 alkoxy and C 1-3 haloalkoxy; and R 9 is hydrogen or C 1-3 alkyl.