Patent ID: 8410093

Claim:
A compound according to structural formula (I): or an active salt or N-oxide thereof, wherein: R 2 is an optionally substituted, heteroaryl, or heteroarylalkyl group; R 4 is a saturated or unsaturated, bridged or unbridged cycloalkyl ring including an R 7 substituent, with the proviso that when the cycloalkyl ring is a saturated bridged cycloalkyl, or an unsaturated bridged or unbridged cycloalkyl, this R 7 substituent is optional; R 5 is selected from hydrogen, an optionally substituted lower alkyl and a group selected from the group consisting of —CN, —NC, —NO 2 , halo, (C1-C3) haloalkyl, (C1-C3) perhaloalkyl, (C1-C3) fluoroalkyl, (C1-C3) perfluoroalkyl, —CF3, (C1-C3) haloalkoxy, (C1-C3) perhaloalkoxy, (C1-C3) fluoroalkoxy, (C1-C3) perfluoroalkoxy, —OCF 3 , OC(O)R a , —C(O)OR a , —C(O)CF 3 , and —C(O)CF 3 ; R 7 is an amide or an ester group, wherein each R a is independently selected from hydrogen, lower alkyl, lower cycloalkyl, (C6-C14) aryl, phenyl, naphthyl, (C7-C20) arylalkyl and benzyl.