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

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

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

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

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

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

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

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

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

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

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