1-[3-(2-Amino-ethoxymethyl)-piperidin-1-yl]-ethanone

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

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

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

[4-(2-Amino-acetylamino)-cyclohexyl]-carbamic acid tert-butyl ester

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

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

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

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

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