(S)-3-Carboxymethylsulfanyl-pyrrolidine-1-carboxylic acid benzyl ester

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

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

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

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

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

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

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

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

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

3-(2-Chloro-acetylamino)-pyrrolidine-1-carboxylic acid tert-butyl ester