(R)-3-(2-Hydroxy-ethylsulfanyl)-piperidine-1-carboxylic acid benzyl ester

3-(Carboxymethyl-amino)-piperidine-1-carboxylic acid tert-butyl ester

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

3-[(Carboxymethyl-methyl-amino)-methyl]-piperidine-1-carboxylic acid tert-butyl ester

[(4-tert-Butoxycarbonylamino-cyclohexyl)-methyl-amino]-acetic acid

3-[(Carboxymethyl-ethyl-amino)-methyl]-pyrrolidine-1-carboxylic acid tert-butyl ester

(S)-2-[(Carboxymethyl-isopropyl-amino)-methyl]-pyrrolidine-1-carboxylic acid tert-butyl ester

2-[(Carboxymethyl-isopropyl-amino)-methyl]-pyrrolidine-1-carboxylic acid tert-butyl ester

4-[(Carboxymethyl-isopropyl-amino)-methyl]-piperidine-1-carboxylic acid tert-butyl este

3-(Carboxymethyl-cyclopropyl-amino)-piperidine-1-carboxylic acid tert-butyl ester

2-(((1R,4R)-4-((tert-butoxycarbonyl)amino)cyclohexyl)-(cyclopropyl)amino)acetic acid