(6R,7R)-3-Acetoxymethyl-7-{3-[5-chloro-2-hydroxy-3-(2-hydroxy-benzoyl)-benzoyl]-2-hydroxy-benzoylamino}-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid tert-butyl ester                                                                                                                                                              在
                                                                                                                                                                                 
三氟乙酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 13.0h,
                                                                                                                以80%的产率得到(6R,7R)-3-Acetoxymethyl-7-{3-[5-chloro-2-hydroxy-3-(2-hydroxy-benzoyl)-benzoyl]-2-hydroxy-benzoylamino}-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid