(2s,4r)-1,2-二苄氧羰基-4-羟基吡咯烷

苯甲氧羰酰琥珀酰亚胺

(4S)-4-hydroxy-L-proline benzyl ester p-toluenesulfonyl salt

(2S,4S)-4-(formyloxy)-1,2-pyrrolidinedicarboxylic acid 1,2-bis(phenylmethyl ester)

氯甲酸苄酯