Compounds selected from the group No. Name "A1" 4-benzoxazol-2-yl-N-methyl-N-[(1R,3S)-3-(5-propyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide "A2" biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5-propyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide "A3" 4-(4-fluoro-phenylethynyl)-N-methyl-N-[(1R,3S)-3-(5-propyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide "A4" 4'-cyano-biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5-propyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide "A5" 4-benzoxazol-2-yl-N-[(1R,3S)-3-(5-ethyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-N-methyl-benzamide "A6" 4'-cyano-biphenyl-4-carboxylic acid [(1R,3S)-3-(5-ethyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-methyl-amide "A7" 4-(1H-benzimidazol-2-yl)-N-[(1R,3S)-3-(5-ethyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-N-methyl-benzamide "A8" N-[(1R,3S)-3-(5-ethyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-N-methyl-4-pyridin-4-yl-benzamide "A9" 4-benzoxazol-2-yl-N-[(1R,3S)-3-(5-isopropyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-N-methyl-benzamide "A10" 4'-cyano-biphenyl-4-carboxylic acid [(1R,3S)-3-(5-isopropyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-methyl-amide "A11" 4-(1H-benzimidazol-2-yl)-N-[(1R,3S)-3-(5-isopropyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-N-methyl-benzamide "A12" N-[(1R,3S)-3-(5-isopropyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-N-methyl-4-pyridin-4-yl-benzamide "A13" 4-benzoxazol-2-yl-N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide "A14" 4-benzothiazol-2-yl-N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide "A15" N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-4-pyridin-4-yl-benzamide "A16" 4'-chloro-biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide "A17" 4-(1H-benzimidazol-2-yl)-N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide "A18" 4-benzoxazol-2-yl-3-methoxy-N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide "A19" 4-(5-chloro-benzoxazol-2-yl)-N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide "A20" 4-imidazo[1,2-a]pyrimidin-2-yl-N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide "A21" 4-(4-chloro-phenylethynyl)-N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-benzamide "A22" N-methyl-N-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-4-pyridin-4-ylethynyl-benzamide "A23" 5-benzoxazol-2-yl-pyridine-2-carboxylic acid methyl-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide "A24" biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide "A25" 4'-cyano-biphenyl-4-carboxylic acid methyl-[(1R,3S)-3-(5-methyl-[1,3,4]oxadiazol-2-yl)-cyclopentyl]-amide "A26" 4-benzoxazol-2-yl-N-methyl-N-[(1R,3S)-3-(5-methyl-oxazol-2-yl)-cyclopentyl]-benzamide "A27" 4-benzoxazol-2-yl-N-methyl-N-[(1R,3S)-3-(4-methyl-oxazol-2-yl)-cyclopentyl]-benzamide "A28" 4-benzoxazol-2-yl-N-methyl-N-[(1R,3S)-3-(3-methyl-[1,2,4]oxadiazol-5-yl)-cyclopentyl]-benzamide "A29" (rac)-cis-biphenyl-4-carboxylic acid [-3-(4-cyclopropyl-[1,2,3]triazol-1-yl)-cyclopentyl]-methyl-amide "A30" (rac)-cis-biphenyl-4-carboxylic acid methyl-[3-(4-propyl-[1,2,3]triazol-1-yl)-cyclopentyl]-amide "A31" biphenyl-4-carboxylic acid {(1R,3S)-3-[4-( -1-hydroxy-ethyl)-[1,2,3]triazol-1-yl]-cyclopentyl}-methyl-amide and pharmaceutically acceptable salts, tautomers and stereoisomers thereof, including mixtures thereof in all ratios.