Patent ID: 8507499

Claim:
A compound, or a pharmaceutically acceptable salt of the compound, wherein the compound has the structure of Formula I: wherein: W and X are independently selected from the group consisting of CH and N; R 1 is selected from the group consisting of cycloalkyl, aryl, heterocyclyl and heteroaryl; wherein the heterocyclyl and heteroaryl substituents may be optionally substituted with one or more substituents independently selected from the group consisting of cyano and alkyl; and wherein the cycloalkyl and aryl substituents may be optionally substituted with one or more substituents independently selected from the group consisting of halo, cyano, alkyl and alkoxy; R 2 is selected from the group consisting of hydrogen, alkyl, alkoxy and halo; R 3 and R 4 are independently selected from the group consisting of hydrogen and alkyl; R 5 is selected from the group consisting of alkyl and hydroxy; and R 6 is selected from the group consisting of hydrogen and alkyl.