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

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

4-(2-Hydroxy-ethyl)-[1,4]diazepane-1-carboxylic acid benzyl ester

1-[4-(2-Hydroxy-ethyl)-[1,4]diazepan-1-yl]-ethanone

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

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

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

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

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

4-Carboxymethyl-piperazine-1,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester

4-Carboxymethyl-[1,4]diazepane-1-carboxylic acid benzyl ester