三氟乙酸 、
methyl (4S,5S)-5-methyl-4-[(4S)-2-oxopiperidin-4-yl]-2-phenyl-5H-1,3-oxazole-4-carboxylate 在
sodium sulfate 作用下,
以
四氢呋喃 为溶剂,
生成 (2S,3S)-3-(2-Amino-ethyl)-2-((S)-1-benzoyloxy-ethyl)-5-oxo-pyrrolidine-2-carboxylic acid methyl ester; compound with trifluoro-acetic acid