Patent ID: 8129396

Claim:
A compound of the formula, or a salt thereof, where: X is NH or S; m is 0, 1, 2, or 3; n is 0, 1, 2, 3, or 4; R 1 is alkyl, substituted alkyl, heteroalkyl, substituted heteroalkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, aralkyl, substituted aralkyl, heteroaralkyl, substituted heteroaralkyl, halo, nitro, or cyano, or is —OR, —SR, —C(O)R, —OC(O)R, —C(O)OR, —NR 2 , —SO 2 OR, —OSO 2 R, —SO 2 NR 2 , —NR 3 SO 2 R, —CONR 2 , —NR 3 COR, or —NR 3 C(O)OR, where each R independently is hydrogen, alkyl, substituted alkyl, heteroalkyl, substituted heteroalkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, aralkyl, substituted aralkyl, heteroaralkyl, or substituted heteroaralkyl, and R 3 is hydrogen or C 1 -C 3 alkyl; and R 2 is alkyl, substituted alkyl, heteroalkyl, substituted heteroalkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, aralkyl, substituted aralkyl, heteroaralkyl, substituted heteroaralkyl, halo, nitro, or cyano, or is —OR, —SR, —C(O)R, —OC(O)R, —C(O)OR, —NR 2 , —SO 2 OR, —OSO 2 R, —SO 2 NR 2 , —NR 3 SO 2 R, —CONR 2 , —NR 3 COR, or —NR 3 C(O)OR, where each R independently is hydrogen, alkyl, substituted alkyl, heteroalkyl, substituted heteroalkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, aralkyl, substituted aralkyl, heteroaralkyl, or substituted heteroaralkyl, and R 3 is hydrogen or C 1 -C 3 alkyl.