(S)-2-Amino-1-(4-methoxymethyl-piperidin-1-yl)-3-methyl-butan-1-one

2-(2-Hydroxy-ethylsulfanylmethyl)-piperidine-1-carboxylic acid benzyl ester

2-(2-Amino-ethylsulfanylmethyl)-piperidine-1-carboxylic acid tert-butyl ester

(S)-3-(2-Amino-ethylsulfanyl)-pyrrolidine-1-carboxylic acid benzyl ester

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

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

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

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

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

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

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