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

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

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

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

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

1-(4-Acetyl-[1,4]diazepan-1-yl)-2-chloro-ethanone

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

(S)-1-(4-Acetyl-piperazin-1-yl)-2-amino-3-methyl-butan-1-one

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

(4-Acetyl-2-methyl-piperazin-1-yl)-acetic acid

2-[(3,4-Dichloro-benzyl)-methyl-amino]-ethanol