Patent ID: 7538138

Claim:
A compound of formula (I) or a pharmaceutically acceptable salt thereof, wherein A is a covalent bond; D is O; L is selected from the group consisting of lower alkylene, fluoroalkylene, and hydroxyalkylene; P and Q taken together form a covalent bond or are both hydrogen; R 1 and R 2 taken together with the nitrogen atom to which they are attached, together form a heterocycle; R 3 is selected from the group consisting of hydrogen, alkoxy, alkoxycarbonyl, alkyl, alkylcarbonyl, alkylcarbonyloxy, alkylsulfinyl, alkylsulfonyl, alkylthio, aryl, carboxy, carboxyalkyl, cyano, cyanoalkyl, formyl, halogen, haloalkoxy, haloalkyl, heterocycle, hydroxy, hydroxyalkyl, mercapto, nitro, —NR A R B , (NR A R B )alkyl, (NR A R B )carbonyl, and (NR A R B )sulfonyl; R 4 , R 5 , R 6 and R 7 are each independently selected from the group consisting of hydrogen, alkoxy, alkoxycarbonyl, alkyl, alkylcarbonyl, alkylcarbonyloxy, alkylsulfinyl, alkylsulfonyl, alkylthio, aryl, carboxy, carboxyalkyl, cyano, cyanoalkyl, cycloalkyl, formyl, halogen, haloalkoxy, haloalkyl, heterocycle, hydroxy, hydroxyalkyl, mercapto, nitro, —NR A R B , (NR A R B )alkyl, (NR A R B )carbonyl, (NR A R B )sulfonyl, -L 2 R 20 , and —R 20 L 3 R 22 ; L 2 is selected from the group consisting of S(O), S(O) 2 , and C═(NOR 21 ); L 3 is selected from the group consisting of a covalent bond, alkylene, alkenylene, O, S, C(═O), N(═OR 21 ), and N(R A ); R 20 is selected from the group consisting of aryl, heterocycle, and cycloalkyl; R 21 is selected from the group consisting of hydrogen and alkyl; R 22 is selected from the group consisting of aryl, heterocycle, and cycloalkyl; R A and R B are each independently selected from the group consisting of hydrogen, alkyl, alkylcarbonyl and formyl; provided that at least one of R 4 , R 5 , R 6 , or R 7 is heterocycle.