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

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

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

(1-Benzyl-piperidin-3-ylmethoxy)-acetic acid

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

(4-Oxo-cyclohexylamino)-acetic acid

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

(3-Bromomethyl-piperidin-1-yl)-acetic acid

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

(2-Methoxymethyl-pyrrolidin-1-yl)-acetic acid

(4-Methoxy-cyclohexylamino)-acetic acid