(S)-2-(1-(benzyloxy)pent-4-en-2-yl)isoindoline-1,3-dione

(2S,4R)-tert-butyl 4-(benzoyloxy)-2-((benzyloxy)methyl)pyrrolidine-1-carboxylate

(4R)-4-羟基-L-脯氨酸乙酯

反式-4-羟基-L-脯氨酸甲酯