(2S,3S)-N-tert-butyloxycarbonyl-3-(tert-butyldimethylsilyloxy)-2-pyrrolidinecarboxylic acid methyl ester
tert-butyl (2S,3S)-3-{[tert-butyl(dimethyl)silyl]oxy}-2-formylpyrrolidine-1-carboxylate
(2S,3S)-1-tert-butyl-2-methyl 3-hydroxypyrrolidine-1,2-dicarboxylate
(2S,3S)-1-(tert-butoxycarbonyl)-3-hydroxypyrrolidine-2-carboxylic acid
tert-butyl (2R,3S)-3-{[tert-butyl(dimethyl)silyl]oxy}-2-(hydroxymethyl)pyrrolidine-1-carboxylate