(6
R)-7
t-[(
R)-6-benzhydryloxycarbonyl-6-(2,2,2-trichloro-ethoxycarbonylamino)-hexanoylamino]-3-(4-hydroxy-benzyl)-7
c-methoxy-8-oxo-(6
rH)-5-thia-1-aza-bicyclo[4.2.0]oct-3-ene-2ξ-carboxylic acid benzhydryl ester                                                                                                                                                                                                                                                                                                          生成                                                 
(6R)-7t-((Ξ)-5-amino-5-carboxy-pentanoylamino)-3-(4-hydroxy-benzyl)-8-oxo-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid