Benzhydryl 3-(acetyloxymethyl)-7-(dibromomethylideneamino)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 、
α-Amino-aceton-trans-oxim 生成 3-Acetoxymethyl-7-(1-hydroxy-5-methyl-1H-imidazol-2-ylamino)-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester