2,4-双(羟基甲基)吡咯烷-1-羧酸-(2S,4r)-叔丁酯

1-O-tert-butyl 2-O,4-O-dimethyl (2S,4R)-pyrrolidine-1,2,4-tricarboxylate

(2R,4R)-3-Benzenesulfonyl-2,4-bis-hydroxymethyl-pyrrolidine-1-carboxylic acid tert-butyl ester

tert-butyl (2R,3S,4R)-2,4-bis(hydroxymethyl)-3-(phenylsulfonyl)pyrrolidine-1-carboxylate

dimethyl (2S,4R)-pyrrolidine-2,4-dicarboxylate