(S)-2-Amino-1-{3-[(benzyl-ethyl-amino)-methyl]-piperidin-1-yl}-3-methyl-butan-1-one

[4-(Benzyl-ethyl-amino)-cyclohexylamino]-acetic acid

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

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

(1R,4R)-[4-(Benzyl-cyclopropyl-amino)-cyclohexylamino]-acetic acid

N-[1-(2-Hydroxy-ethyl)-piperidin-3-ylmethyl]-acetamide

N-[1-(2-Hydroxy-ethyl)-piperidin-3-yl]-N-methyl-acetamide

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

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

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

N-Cyclopropyl-N-[1-(2-hydroxy-ethyl)-pyrrolidin-3-ylmethyl]-acetamide