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

((S)-1-Benzyl-pyrrolidin-2-ylmethoxy)-acetic acid

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

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

(1-Methyl-pyrrolidin-3-ylmethoxy)-acetic acid

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

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

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

[4-(Toluene-4-sulfonyloxy)-piperidin-1-yl]-acetic acid

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