benzhydryl 3-(hydroxymethyl)-8-oxo-7-[(2-phenoxyacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 、
methyl 3-hydroxy-5-isoxazoleacetate 生成 benzhydryl 3-[[5-(2-methoxy-2-oxoethyl)-1,2-oxazol-3-yl]oxymethyl]-8-oxo-7-[(2-phenoxyacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate