benzhydryl 3-(hydroxymethyl)-8-oxo-7-[(2-phenoxyacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 、
4-fluoro-5-methylisoxazol-3-ol 生成 benzhydryl 3-[(4-fluoro-5-methyl-1,2-oxazol-3-yl)oxymethyl]-8-oxo-7-[(2-phenoxyacetyl)amino]-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate