D-Prolin
(2R,4'S)-N-Benzyloxycarbonyl-2-(2',2'-dimethyl-1',3'-dioxolan-4'-yl)pyrrolidine
(R)-1-benzyloxycarbonyl-2-[(S)-1,2-dihydroxyethyl]pyrrolidine
(2R)-(+)-phenylmethyl 2-formylpyrrolidine-1-carboxylate
(2R)-(+)-phenylmethyl 2-(hydroxymethyl)pyrrolidine-1-carboxylate