Patent ID: 7723385

Claim:
A compound of formula (I) or a salt thereof, wherein R 1 is -(Q 1 ) x -R 5 ; Q 1 is C 1 -C 6 alkylene; x is 0 or 1; R 5 is H or C 1 -C 6 alkyl; R 2 is -(Q 3 )-(Q 4 )-R 6 , or -(Q 3 )-CN; Q 3 is C 1 -C 6 alkylene; Q 4 is -C(O)-, -C(S)-, or -C(NR 7 )-, R 7 is H or alkyl; R 6 is C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, hydroxy, C 1 -C 6 alkoxy, phenoxy, benzyloxy, or -N(R 8 )(R 9 ) R 8 and R 9 each independently are H, hydroxy, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, -(Q 5 ) y -C 3 -C 6 cycloalkyl, -N(R 10 )(R 11 ); Q 5 is C 1 -C 6 alkylene; y is 0 or 1; R 10 and R 11 each independently are H or C 1 -C 6 alkyl; R 3 is -CN; and R 4 is C 1 -C 6 haloalkyl.