2-Chloro-1-(3-methoxy-piperidin-1-yl)-ethanone

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

(4-Benzyloxycarbonylamino-cyclohexylsulfanyl)-acetic acid

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

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

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

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

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

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

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

(S)-3-(Carboxymethyl-ethyl-amino)-pyrrolidine-1-carboxylic acid tert-butyl ester