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

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

((R)-1-Benzyl-pyrrolidin-3-yloxy)-acetic acid

2-Carboxymethoxymethyl-piperidine-1-carboxylic acid benzyl ester

((S)-1-Acetyl-pyrrolidin-3-yloxy)-acetic acid

((R)-1-Methyl-pyrrolidin-3-yloxy)-acetic acid

(3-Oxo-pyrrolidin-1-yl)-acetic acid

(4-Chloromethyl-piperidin-1-yl)-acetic acid

(4-Bromo-cyclohexylamino)-acetic acid

[3-(Toluene-4-sulfonyloxymethyl)-pyrrolidin-1-yl]-acetic acid