(6R,7S)-3-Acetoxymethyl-7-(5-tert-butoxycarbonylamino-5-carboxy-pentanoylamino)-8-oxo-5-oxa-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 在
苯甲醚 、
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
生成 (6R,7S)-3-Acetoxymethyl-7-(5-amino-5-carboxy-pentanoylamino)-8-oxo-5-oxa-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester; compound with trifluoro-acetic acid