(S)-2-Amino-1-(4-dimethylamino-piperidin-1-yl)-propan-1-one

(S)-2-Amino-1-(4-dimethylamino-piperidin-1-yl)-3-methyl-butan-1-one

(S)-2-Amino-1-[(R)-3-(isopropyl-methyl-amino)-piperidin-1-yl]-3-methyl-butan-1-one

(S)-2-Amino-N-[2-(isopropyl-methyl-amino)-cyclohexyl]-3-methyl-butyramide

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

((S)-3-Dimethylamino-piperidin-1-yl)-acetic acid

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

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

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

1-Acetyl-4-(2-hydroxy-ethyl)-piperazine-2-carboxylic acid methyl ester

4-(2-Amino-ethyl)-3-methyl-piperazine-1-carboxylic acid benzyl ester