(1R,4R)-(S)-2-Amino-N-[4-(benzyl-ethyl-amino)-cyclohexyl]-3-methyl-butyramide

[(R)-3-(Benzyl-ethyl-amino)-piperidin-1-yl]-acetic acid

{(S)-2-[(Benzyl-isopropyl-amino)-methyl]-pyrrolidin-1-yl}-acetic acid

[4-(Benzyl-isopropyl-amino)-piperidin-1-yl]-acetic acid

{4-[(Benzyl-isopropyl-amino)-methyl]-piperidin-1-yl}-acetic acid

[3-(Benzyl-cyclopropyl-amino)-piperidin-1-yl]-acetic acid

{4-[(Benzyl-cyclopropyl-amino)-methyl]-piperidin-1-yl}-acetic acid

N-[(R)-1-(2-Hydroxy-ethyl)-pyrrolidin-3-yl]-acetamide

N-[1-(2-Hydroxy-ethyl)-piperidin-2-ylmethyl]-acetamide

N-[1-(2-Hydroxy-ethyl)-pyrrolidin-2-ylmethyl]-N-methyl-acetamide

N-Ethyl-N-[(R)-1-(2-hydroxy-ethyl)-pyrrolidin-3-yl]-acetamide