1-(2-Chloro-acetyl)-pyrrolidin-3-one

2-Amino-1-(4-chloro-piperidin-1-yl)-ethanone

3-{[(2-Amino-acetyl)-methyl-amino]-methyl}-pyrrolidine-1-carboxylic acid tert-butyl ester

(S)-3-[(2-Amino-acetyl)-methyl-amino]-piperidine-1-carboxylic acid tert-butyl ester

3-[(2-Amino-acetyl)-ethyl-amino]-piperidine-1-carboxylic acid tert-butyl ester

3-[(2-Amino-acetyl)-isopropyl-amino]-pyrrolidine-1-carboxylic acid tert-butyl ester

(S)-3-(Carboxymethyl-methyl-amino)-pyrrolidine-1-carboxylic acid benzyl ester

2-{[Cyclopropyl-(2-hydroxy-ethyl)-amino]-methyl}-piperidine-1-carboxylic acid benzyl ester

3-[(2-Amino-ethyl)-methyl-amino]-piperidine-1-carboxylic acid benzyl ester

(S)-2-Amino-N-((S)-1-benzyl-pyrrolidin-2-ylmethyl)-N-ethyl-3-methyl-butyramide

[(R)-1-(2-Chloro-acetyl)-piperidin-3-yl]-isopropyl-carbamic acid tert-butyl ester