(S)-N-[2-(Acetyl-isopropyl-amino)-cyclohexyl]-2-amino-propionamide

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

N-[1-((S)-2-Amino-3-methyl-butyryl)-piperidin-2-ylmethyl]-N-ethyl-acetamide

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

N-[1-((S)-2-Amino-3-methyl-butyryl)-pyrrolidin-3-yl]-N-cyclopropyl-acetamide

(1R,4R)-(S)-N-[4-(Acetyl-cyclopropyl-amino)-cyclohexyl]-2-amino-3-methyl-butyramide

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

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

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

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

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