Patent ID: 8106068

Claim:
A compound of Formula (2): or a pharmaceutically acceptable salt thereof, wherein: L is NRC(O)NR; R 1 , R 2 and R 3 are methyl; R 4 is (CR 2 ) k R 6 or C 1-6 alkyl; R 6 is C 3-7 cycloalkyl, aryl, heterocyclic ring or heteroaryl, each of which is optionally substituted with halo, cyano, nitro, NR 7 R 8 , NRCOR 7 , (CR 2 ) p OR 9′ , (CR 2 ) p R 10 , or a C 1-6 alkyl optionally substituted with halo, hydroxyl, C 1-6 alkoxy or cyano; R 9′ is H, an optionally halogenated C 1-6 alkyl or (CR 2 ) p R 10 ; R 10 is C 3-7 cycloalkyl, aryl, 5-7 membered heterocyclic ring, or heteroaryl, each of which is optionally substituted with halo, cyano, nitro, NR 7 R 8 , NRCOR 7 , NRC(O)(CR 2 ) p NR 7 R 8 , NRCONR(CR 2 ) p NR 7 R 8 , OR 9 , or C 1-6 alkyl optionally substituted with hydroxyl; R 7 , R 8 and R 9 are independently H or C 1-6 alkyl; or R 7 and R 8 together with N in each NR 7 R 8 may form a 5-7 membered heterocyclic ring; R is H or C 1-6 alkyl; k is 0-6; and n is 0-1.