Patent ID: 8470773

Claim:
A compound or pharmaceutically acceptable salt thereof, having the general structure shown in Formula (VI): wherein R 1 , R 2 , R 3 , R 5 , s, and Z are selected independently of each other and wherein: R 1 is selected from the group consisting of: phenyl and naphthyl, wherein said phenyl and said naphthyl are substituted with from 1 to 3 groups each independently selected from: halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, and cycloalkyl; R 2 is selected from the group consisting of: phenyl and naphthyl, wherein said phenyl and said naphthyl are substituted with from 1 to 3 groups each independently selected from: halogen, alkyl, haloalkyl, alkoxy, haloalkoxy, and cycloalkyl; R 3 is selected from the group consisting of H and lower alkyl; R 5 is selected from H and alkyl; s is 1-3; and Z is selected from the group consisting of —(CH 2 )—(CH(CH 3 ))—C(O)OH, —(CH 2 )—(CH 2 )—(CH 2 )—C(O)OH, —(CH 2 )—C(CH 3 ) 2 —C(O)OH, —(CH 2 )—C(CH 3 )(OH)—C(O)OH, —CH 2 —CH 2 —C(O)OH, —CH 2 —CH(OH)—C(O)OH, —CH(CH 3 )—CH 2 —C(O)OH, —CH 2 —CH(F)—C(O)OH, —CH 2 —CF 2 —C(O)OH, —CH(CH 3 )—CF 2 —C(O)OH, —CH 2 —CH 2 —CF 2 —C(O)OH,