Patent ID: 7960403

Claim:
A compound represented by formula (I): or a pharmaceutically acceptable salt thereof, Wherein: R 2 is optionally substituted C 1-10 alkyl, optionally substituted C 2-10 alkenyl, optionally substituted C 2-10 alkynyl, optionally substituted C 6-12 aryl or optionally substituted 3 to 10 membered heterocycle; R 3 is H, optionally substituted C 1-10 alkyl or optionally substituted C 6-12 aryl; R 4 , R 5 , R′ 5 , R″ 5 , R 6 and R′ 6 are each, independently, H, optionally substituted C 1-10 alkyl, optionally substituted C 2-10 alkenyl, optionally substituted C 2-10 alkynyl, optionally substituted C 6-12 aryl, optionally substituted 3 to 10 membered heterocycle, optionally substituted C 7-12 aralkyl or optionally substituted 4-16 member heteroaralkyl; R 7 and R″ 8 are each independently H, optionally substituted C 1-10 alkyl optionally substituted C 2-10 alkenyl or optionally substituted C 2-10 alkynyl; R 8 is H, optionally substituted C 1-10 alkyl, optionally substituted C 2-10 alkenyl, optionally substituted C 2-10 alkynyl, optionally substituted C 6-12 aryl, optionally substituted 3 to 10 membered heterocycle, optionally substituted or optionally substituted 4-16 member heteroaralkyl; or R″ 8 and R 8 can be taken together to form an optionally substituted 3 to 10 membered heterocycle; and R 9 is H or optionally substituted C 1-10 alkyl.