Patent ID: 7589197

Claim:
A compound of formula (I): wherein X is —N(R a )— is C 1 -C 10 alkylene or —C(O)— L 2 is deleted or C 1 -C 10 alkylene; L 3 is C 3 -C 20 cycloalkyl; each of R 1 , R 2 , and R 3 , independently, is H, C 1 -C 10 alkyl, C 3 -C 20 cycloalkyl, C 3 -C 20 heterocycloalkyl, aryl, heteroaryl, halo, CN, OR c , COOR c , OC(O)R c , C(O)R c , C(O)NR c R d , or NR c R d ; R 4 is H; and R 5 is C 3 -C 20 cycloalkyl, C 3 -C 20 heterocycloalkyl, aryl, heteroaryl, or C 1 -C 10 alkyl substituted with C 3 -C 20 cycloalkyl, C 3 -C 20 heterocycloalkyl, or N(R e R f ); in which each of R a , R b , R c , R d , R e , and R f , independently, is H, C 1 -C 10 alkyl, C 3 -C 20 cycloalkyl, C 3 -C 20 heterocycloalkyl, aryl, heteroaryl, or —C(O)R; R being H, C 1 -C 10 alkyl, C 3 -C 20 cycloalkyl, C 3 -C 20 heterocycloalkyl, aryl, or heteroaryl; or a salt thereof.