(3R,4S)-4-Allyloxycarbonylamino-1-(4-methoxy-benzenesulfonyl)-pyrrolidine-3-carboxylic acid ethyl ester 、
9-芴甲基-N-琥珀酰亚胺基碳酸酯 在
palladium diacetate lithium hydroxide 作用下,
生成 (3R,4S)-4-(9H-Fluoren-9-ylmethoxycarbonylamino)-1-(4-methoxy-benzenesulfonyl)-pyrrolidine-3-carboxylic acid