Patent ID: 6884814

Claim:
A compound of formula I having the structure, wherein, R 1 is hydrogen, hydroxyl, F, Br, I, alkyl of 1-6 carbon atoms, cycloalkyl of 3-8 carbon atoms, alkoxy of 1-4 carbon atoms, alkenyl of 2-7 carbon atoms, trifluoroalkyl of 1-6 carbon atoms, trifluoroalkoxy of 1-6 carbon atoms, alkylthio of 1-6 carbon atoms, or aryl of 6-10 carbon atoms; wherein the alkyl or alkenyl moieties are optionally substituted with hydroxyl, —CN, halogen, trifluroalkyl of 1-6 carbon atoms, trifluoroalkoxy of 1-6 carbon atoms, —COR 4 , —CO 2 R 4 , —NO 2 , CONR 4 R 5 , NR 4 R 5 or N(R 4 )COR 5 . R 2 is hydrogen, hydroxyl, F, Cl, Br, I, alkyl of 1-6 carbon atoms, cycloalkyl of 3-8 carbon atoms, alkoxy of 1-4 carbon atoms, alkenyl of 2-7 carbon atoms, trifluoroalkyl of 1-6 carbon atoms, trifluoroalkoxy of 1-6 carbon atoms, alkylthio of 1-6 carbon atoms, or aryl of 6-10 carbon atoms; wherein the alkyl or alkenyl moieties are optionally substituted with hydroxyl, —CN, halogen, trifluroalkyl of 1-6 carbon atoms, trifluoroalkoxy of 1-6 carbon atoms, —COR 4 , —CO 2 R 4 , —NO 2 , CONR 4 R 5 , NR 4 R 5 or N(R 4 )COR 5 ; R 3 is hydrogen, hydroxyl, F, Cl, Br, I, alkyl of 1-6 carbon atoms, cycloalkyl of 3-8 carbon atoms, alkoxy of 1-4 carbon atoms, alkenyl of 2-7 carbon atoms, alkylthio of 1-6 carbon atoms, trifluoroalkyl of 1-6 carbon atoms, or trifluoroalkoxy of 1-6 carbon atoms, aryl of 6-10 carbon atoms, —NO 2 , —CN, NR 4 R 5 or N(R 4 )COR 5 , —CHFCN, —CF 2 CN, wherein the alkyl or alkenyl moieties are optionally substituted with hydroxyl, —CN, halogen, trifluroalkyl of 1-6 carbon atoms, trifluoroalkoxy of 1-6 carbon atoms, —COR 4 , —CO 2 R 4 , —NO 2 , CONR 4 R 5 , NR 4 R 5 or N(R 4 )COR 5 ; R 4 and R 5 are each, independently, hydrogen, alkyl of 1-6 carbon atoms, or aryl of 6-10 carbon atoms; X is O; or a pharmaceutically acceptable salt thereof.