(1S,4S)-N-Cbz-6-(R/S)-methoxy-5-oxa-2-aza-bicyclo[2.2.1]heptane

(1S,4S)-N-Cbz-6-(R/S)-hydroxy-5-oxa-2-aza-bicyclo[2.2.1]heptane

benzyl (2S,4S)-2-formyl-4-hydroxypyrrolidine-1-carboxylate

(2s,4s)-N-cbz-2-羟甲基-4-氧-吡咯烷

(4S)-4-羟基-L-脯氨酸甲酯