Patent ID: 7323447

Claim:
A compound of formula (I) or a pharmaceutically acceptable salt thereof, wherein L is absent or —C(O)—; R 1 is heteroaryl or heterocyclyl wherein the heteroaryl and heterocyclyl are optionally substituted with one, two, three, four, five, or six substituents independently selected from alkoxy, alkoxycarbonyl, alkoxycarbonyloxy, alkyl, alkylsulfanyl, aryl, arylalkoxy, carboxy, cyano, cycloalkyl, halo, haloalkoxy, haloalkyl, heteroaryloxy, heteroaryl, heteroarylcarbonyl, heterocyclyl, hydroxy, mercapto, —NR a R b , (NR a R b )alkyl, and (NR c R d )carbonyl; R 2 is selected from hydrogen, alkenyl, alkoxyalkyl, alkoxycarbonylalkyl, alkyl, alkylaminoalkyl, aminoalkyl, aryl, arylalkyl, cycloalkyl, (cycloalkyl)alkyl, dialkylaminoalkyl, haloalkoxyalkyl, haloalkyl, heteroaryl, heteroarylalkyl, heterocyclyl, and heterocyclylalkyl; R 3 is selected from hydrogen and R 5 —NH—C(O)—; R 4 is selected from hydrogen, alkenyl, alkyl, cycloalkyl, haloalkenyl, and haloalkyl; R 5 is selected from alkyl, aryl, arylalkyl, carboxyalkyl, cycloalkyl, (cycloalkyl)alkyl, haloalkoxyalkyl, haloalkyl, heteroaryl, heteroarylalkyl, heterocyclyl, and heterocyclylalkyl; one of R a and R b is selected from hydrogen, alkoxycarbonyl, alkyl, alkylcarbonyl, alkylsulfonyl, arylalkyl, arylcarbonyl, arylsulfonyl, cycloalkyl, formyl, and (NR c R d )carbonyl and the other is selected from hydrogen, alkyl, and cycloalkyl; R c and R d are each independently selected from hydrogen and alkyl; and W is selected from hydroxy and —NH—SO n —R 6 , wherein n is 1 or 2 and R 6 is selected from alkyl, aryl, cycloalkyl, (cycloalkyl)alkyl, heteroaryl, heterocyclyl, and —NR a R b .