L-脯氨酸

[2S-[2R*[(R*),α(R*),β(S*)]]]-1-[(1,1-Dimethylethoxy)carbonyl]-β-methoxy-α-methyl-2-pyrrolidinepropanoic acid 2-hydroxy-1,2,2-triphenylethyl ester

tert-butyl 2-(2-(methoxycarbonyl)-1-hydroxyallyl)pyrrolidine-1-carboxylate

benzyl (2R,3R,2'S)-3-(N-tert-butoxycarbonyl-2'-pyrrolidinyl)-3-hydroxy-2-methylpropanoate