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

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

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

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

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

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

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

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

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

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

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