Patent ID: 7622490

Claim:
A compound having the formula an N-oxide, salt, stereoisomeric form, racemic mixture, prodrug, or ester thereof, wherein R 1 is hydrogen, C 1-6 alkyl, C 2-6 alkenyl, arylC 1-6 alkyl, C 3-7 cycloalkyl, C 3-7 cycloalkylC 1-6 alkyl, aryl, Het 1 , or Het 1 C 1-6 alkyl; R 2 is hydrogen or C 1-6 alkyl; L is —C(═O)—, —O—C(═O)—, NR 8 —C(═O)—, or —O—C 1-6 alkanediyl-C(═O)—; R 3 is C 1-6 alkyl, aryl, C 3-7 cycloalkyl, C 3-7 cycloalkylC 1-4 alkyl, or arylC 1-4 alkyl; R 4 is C 1-6 alkyl optionally substituted with pyridinyl; R 5 is hydrogen or C 1-6 alkyl; R 6 is hydrogen or C 1-6 alkyl; R 8 is hydrogen or C 1-6 alkyl; and wherein Het 1 is a saturated, or partially saturated, monocyclic, bicyclic or tricyclic heterocycle having 3 to 14 ring members, which contains 1 or more heteroatom ring members each independently selected from nitrogen, oxygen or sulfur, and which is optionally substituted on 1 or more carbon atoms by methyl, bromo, hydroxy, nitro, or cyano.