Patent ID: 7579353

Claim:
A compound represented by the following Formula I: or a pharmaceutically acceptable salt thereof, wherein: Het represents a 6-membered monocyclic heteroaromatic ring containing at least one nitrogen atom, wherein Het is substituted through a carbon atom with one group Z, wherein Z represents: i) a phenyl or methylenedioxyphenyl group, either of which is optionally substituted with one or more R X groups; ii) a —OC 1-6 alkylphenyl group, wherein the phenyl portion is optionally substituted with one or more R X groups; iii) a C 1-10 alkyl, an Oaryl, a —C 1-6 alkylaryl, a —C 2-6 alkenylaryl or a —C 2-6 alkynylaryl group, wherein any aryl portion is optionally substituted with one or more R X group; R X represents halogen, cyano, —NR A R B , C 1-6 alkyl, C 1-6 alkoxy or C 1-6 alkylS(O) m —; m represents 0-2; R 1 represents halogen, hydrogen, or cyano; R 2 resents hydrogen, hydroxy, —C(O)R Y , —C(O)OH or C 1-6 alkyl optionally substituted by halogen, hydroxy, —C(O)OH, —C(O)R Y or —NR A R B ; R A and R B independently represent hydrogen or C 1-6 alkyl; R Y represents C 1-6 alkoxy or C 1-6 alkyl; and R 3 and R 4 are independently C 1-6 alkyl.