N-[(S)-1-((S)-2-Amino-3-methyl-butyryl)-pyrrolidin-2-ylmethyl]-N-isopropyl-acetamide

[3-(Acetylamino-methyl)-pyrrolidin-1-yl]-acetic acid

[3-(Acetylamino-methyl)-piperidin-1-yl]-acetic acid

[3-(Acetyl-methyl-amino)-piperidin-1-yl]-acetic acid

(1R,4R)-[4-(Acetyl-methyl-amino)-cyclohexylamino]-acetic acid

(1R,4R)-[4-(Acetyl-ethyl-amino)-cyclohexylamino]-acetic acid

[4-(Acetyl-ethyl-amino)-piperidin-1-yl]-acetic acid

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

[2-(Acetyl-isopropyl-amino)-cyclohexylamino]-acetic acid

{2-[(Acetyl-cyclopropyl-amino)-methyl]-pyrrolidin-1-yl}-acetic acid

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