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(2007/10/03)tert-butyl (2S,5R/S)-1-(tert-butyloxycarbonyl)-5-[(ethoxycarbonyl)-methyl]prolinate
tert-butyl (2S)-trans-1-(tert-butyloxycarbonyl)-5-(2-hydroxyethyl)-prolinate
tert-butyl (2S)-trans-1-(tert-butyloxycarbonyl)-5-(formylmethyl)prolinate
tert-butyl (2S)-(1-tert-butoxycarbonyl)-5-hydroxypyrrolidine-2-carboxylate
N-(benzyloxycarbonyl)phosphonoglycine trimethyl ester