A compound according to formula II or a pharmaceutically acceptable salt thereof, wherein Het is: wherein R 4, R 5, R 6, and R 7 are independently selected from the group consisting of hydrogen, halogen, CN, NO 2, optionally halogenated C 1-8 alkyl, hydroxy, or C 1-8 alkoxy, provided that R 4, R 5, R 6, and R 7 are not all hydrogen; wherein A is sulfur and B is oxygen; wherein R 1 is phenyl substituted with one or more substituents selected from the group consisting of halo, alkyl, haloalkyl, alkoxy, haloalkoxy, alkenyl, trifluoromethyl, trifluoromethoxy, alkynyl, cycloalkyl, cycloalkylalkyl, cycloheteroalkyl, cycloheteroalkylalkyl, aryl, heteroaryl, arylalkyl, aryloxy, aryloxyalkyl, arylalkoxy, alkoxycarbonyl, arylcarbonyl, arylalkenyl, aminocarbonylaryl, arylthio, arylsulfinyl, arylazo, heteroarylalkyl, heteroarylalkenyl, heteroarylheteroaryl, heteroaryloxy, hydroxy, nitro, cyano, amino, substituted amino, carbamoyl, alkyl carbamoyl, amidified carboxy, amidified carboxyalkyl, alkyl amidified carboxyalkyl, thiol, alyklthio, arylthio, heteroarylthio, arylthioalkyl, alkoxyarylthio, alkylcarbonyl, arylcarbonyl, alkylaminocarbonyl, arylaminocarbonyl, alkoxycarbonyl, aminocarbonyl, alkylcarbonyloxy, arylcarbonyloxy, alkylcarbonylamino, arylcarbonylamino, arylsulfinyl, arylsulfinylalkyl, arylsulfonylamino, and arylsulfonaminocarbonyl; and wherein R 2 and R 3, together with the carbon to which they are linked, form a cycle which is C 3-10 cycloalkyl or substituted C 3-10 cycloalkyl, wherein each substituted cycloalkyl is independently substituted with one or more groups selected from alkyl, alkoxy, hydroxy, aryl, aryloxy, arylalkyl, cycloalkyl, alkylamido, alkanoylamino, oxo, acyl, arylcarbonylamino, amino, nitro, cyano, thiol, alkylthio, bromo, fluoro, chloro, iodo, heterocyclyl, heteroaryl, carboxyl, carbalkoyl, alkenyl, and amido groups. wherein R 4, R 5, R 6, and R 7 are independently selected from the group consisting of hydrogen, halogen, CN, NO 2, optionally halogenated C 1-8 alkyl, hydroxy, or C 1-8 alkoxy, provided that R 4, R 5, R 6, and R 7 are not all hydrogen; wherein A is sulfur and B is oxygen; wherein R 1 is phenyl substituted with one or more substituents selected from the group consisting of halo, alkyl, haloalkyl, alkoxy, haloalkoxy, alkenyl, trifluoromethyl, trifluoromethoxy, alkynyl, cycloalkyl, cycloalkylalkyl, cycloheteroalkyl, cycloheteroalkylalkyl, aryl, heteroaryl, arylalkyl, aryloxy, aryloxyalkyl, arylalkoxy, alkoxycarbonyl, arylcarbonyl, arylalkenyl, aminocarbonylaryl, arylthio, arylsulfinyl, arylazo, heteroarylalkyl, heteroarylalkenyl, heteroarylheteroaryl, heteroaryloxy, hydroxy, nitro, cyano, amino, substituted amino, carbamoyl, alkyl carbamoyl, amidified carboxy, amidified carboxyalkyl, alkyl amidified carboxyalkyl, thiol, alyklthio, arylthio, heteroarylthio, arylthioalkyl, alkoxyarylthio, alkylcarbonyl, arylcarbonyl, alkylaminocarbonyl, arylaminocarbonyl, alkoxycarbonyl, aminocarbonyl, alkylcarbonyloxy, arylcarbonyloxy, alkylcarbonylamino, arylcarbonylamino, arylsulfinyl, arylsulfinylalkyl, arylsulfonylamino, and arylsulfonaminocarbonyl; and wherein R 2 and R 3, together with the carbon to which they are linked, form a cycle which is C 3-10 cycloalkyl or substituted C 3-10 cycloalkyl, wherein each substituted cycloalkyl is independently substituted with one or more groups selected from alkyl, alkoxy, hydroxy, aryl, aryloxy, arylalkyl, cycloalkyl, alkylamido, alkanoylamino, oxo, acyl, arylcarbonylamino, amino, nitro, cyano, thiol, alkylthio, bromo, fluoro, chloro, iodo, heterocyclyl, heteroaryl, carboxyl, carbalkoyl, alkenyl, and amido groups.