(S)-2-Amino-1-[4-(isopropyl-methyl-amino)-piperidin-1-yl]-propan-1-one

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

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

(S)-2-Amino-1-{4-[(cyclopropyl-methyl-amino)-methyl]-piperidin-1-yl}-3-methyl-butan-1-one

(2-Dimethylaminomethyl-piperidin-1-yl)-acetic acid

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

[2-(Isopropyl-methyl-amino)-cyclohexylamino]-acetic acid

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

1-[4-(2-Hydroxy-ethyl)-2-methyl-piperazin-1-yl]-ethanone

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

1-(4-Acetyl-3-methyl-piperazin-1-yl)-2-chloro-ethanone