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

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

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

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

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

4-(2-Hydroxy-ethyl)-piperazine-1,2-dicarboxylic acid 1-benzyl ester 2-methyl ester

2-(2,4-Dimethyl-piperazin-1-yl)-ethanol

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

4-(2-Chloro-acetyl)-3-methyl-piperazine-1-carboxylic acid tert-butyl ester

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

4-(2-Chloro-acetyl)-2-methyl-piperazine-1-carboxylic acid benzyl ester