Patent ID: 8217060

Claim:
A compound of formula (I) wherein R 1 is selected from the group consisting of hydrogen, halogen, lower alkyl and halogenated lower alkyl; is selected from the group consisting of phenyl, pyridyl and thienyl; wherein the phenyl, pyridyl or thienyl is optionally substituted with one or more substituents independently selected from the group consisting of halogen, hydroxy, lower alkyl, hydroxy substituted lower alkyl, halogenated lower alkyl, lower alkoxy, halogenated lower alkoxy, cyano, —C(O)-(lower alkyl) and 2-(2-methyl-[1,3]dioxolanyl); R 2 is selected from the group consisting of hydrogen and methyl; R 3 is selected from the group consisting of hydrogen and methyl; is a ring structure selected from the group consisting of wherein X is selected from the group consisting of CR 5 R 6 , O and S; and wherein R 5 and R 6 are each independently selected from the group consisting of hydrogen, halogen and lower alkyl; wherein R 7 is selected from the group consisting of hydrogen, halogen and lower alkyl; wherein R 8 is selected from the group consisting of hydrogen, halogen and lower alkyl; and or a tautomer or pharmaceutically acceptable salt thereof.