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

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

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

((R)-3-Dimethylamino-pyrrolidin-1-yl)-acetic acid

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

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

[(S)-3-(Cyclopropyl-methyl-amino)-pyrrolidin-1-yl]-acetic acid

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

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

1-[4-(2-Hydroxy-ethyl)-3-methyl-piperazin-1-yl]-ethanone

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

4-(2-Chloro-acetyl)-[1,4]diazepane-1-carboxylic acid tert-butyl ester

2-Chloro-1-(3,4-dimethyl-piperazin-1-yl)-ethanone

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

4-Carboxymethyl-piperazine-1-carboxylic acid benzyl ester