Patent ID: 7410985

Claim:
A 3-hydroxypyridin-4-one compound of formula I: wherein: R 1 is X with the proviso that R 2 is Y; or R 1 is T with the proviso that R 2 is W; X is C 3 -C 6 cycloalkyl; Y is selected from the group consisting of C 3 -C 6 cycloalkyl, C 1 to C 6 alkyl and C 1 to C 6 alkyl monosubstituted with a C 3 -C 6 cycloalkyl; T is C 1 to C 6 alkyl; W is C 3 -C 6 cycloalkyl; R 3 is selected from the group consisting of hydrogen and C 1 to C 6 alkyl; R 4 is selected from the group consisting of hydrogen and C 1 to C 6 alkyl; R 5 is selected from the group consisting of hydrogen and C 1 to C 6 alkyl; and/or a pharmaceutically acceptable salt thereof.