Patent ID: 7872142

Claim:
A compound of formula D: wherein, Ar is heteroaryl, or substituted heteroaryl; R 1 is hydrogen, hydroxy, C1 to C4 alkyl, phenyl, C1 to C2 haloalkyl, or halo; R 2 is hydrogen, C1 to C5 alkyl, phenyl or substituted phenyl, or wherein R 1 and R 2 together form an alkylene ring or a heteroalkylene ring; R 4 is hydrogen, C1 to C4 alkyl, C1 to C4 alkyl substituted with phenyl, heteroaryl, hydroxy, methoxy, or methylthio, C1 to C2 haloalkyl (other than chloroalkyl), benzyl, substituted phenyl methlyene, phenyl or substituted phenyl, or heteroaryl, wherein in any six membered heteroaryl, heteroatoms consist of one or two nitrogen atoms, and wherein in any five membered heteroaryl the heteroatoms consist of one to three of O, N, or S, and wherein substitution on phenyl or heteroaryl is with halo, phenyl, or C1 or C2 alkyl; R 5 is hydrogen, halo, or C1 to C3 alkoxy, or OCONR 1 R 2 ; R 6 is hydrogen, halo, hydroxy, C1 to C4 alkoxy, C1 to C4 alkyl, cyano, nitro, or formyl; and R 8 is hydrogen, halo, C1 to C4 alkyl, or formyl.