Patent ID: 8426414

Claim:
A compound of formula (II) or a pharmaceutically acceptable salt thereof, wherein A is selected from pyrazinyl and pyridinyl; R 1 is selected from: wherein “ ” denotes the point of attachment to the parent molecular moiety; R 3 is selected from C 4 alkyl and C 1 alkoxy-C 2 alkyl; R 4 is hydrogen; or R 3 and R 4 , together with the carbon atom to which they are attached, form a carbonyl group, or form a ring selected from C 5 cycloalkyl and tetrahydropyranyl; R 6 is selected from hydrogen and halo; and R 7 is selected from C 5 alkynyl; C 3 cycloalkyl; C 4 cycloalkyl-C 1 alkoxy; and phenyl optionally substituted with one substituent selected from C 3 alkoxy, C 1 alkoxy-C 1 alkyl, C 3 alkyl, and C 2 alkynyl, provided that when the phenyl is substituted the substituent is in the para position on the phenyl ring; R 8 is selected from hydrogen; C 1 -C 3 alkyl; and halo; and R 9 is selected from hydrogen; C 1 -C 3 alkyl; and halo.