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

2-Amino-1-(3-bromo-piperidin-1-yl)-ethanone

3-(2-Amino-acetylamino)-pyrrolidine-1-carboxylic acid tert-butyl ester

4-[(2-Amino-acetylamino)-methyl]-piperidine-1-carboxylic acid tert-butyl ester

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

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

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

(1R,4R)-{4-[(2-Amino-acetyl)-ethyl-amino]-cyclohexyl}-carbamic acid tert-butylester

4-[(Carboxymethyl-methyl-amino)-methyl]-piperidine-1-carboxylic acid benzyl ester

(S)-2-[(Carboxymethyl-methyl-amino)-methyl]-pyrrolidine-1-carboxylic acid benzyl ester

(1R,4R)-{4-[Cyclopropyl-(2-hydroxy-ethyl)-amino]-cyclohexyl}-carbamic acid benzyl ester