1-((S)-2-Amino-3-methyl-butyryl)-piperidin-3-one

(S)-2-Amino-1-(4-methoxymethyl-piperidin-1-yl)-propan-1-one

(R)-3-Carboxymethylsulfanyl-pyrrolidine-1-carboxylic acid tert-butyl ester

(4-tert-Butoxycarbonylamino-cyclohexylsulfanyl)-acetic acid

4-Carboxymethylsulfanyl-piperidine-1-carboxylic acid benzyl ester

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

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

[4-(2-Hydroxy-ethylsulfanyl)-cyclohexyl]-carbamic acid benzyl ester

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

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

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