1,1-dimethylethyl 7-[2-(2-tritylaminothiazol-4-yl)-2-methoxyimino-acetamido]-3 [[2-(1,1-dimethylethoxy)-2-oxoethyl]-thio]-8-oxo-4-thia-1-azabicyclo[4,2,0]oct-2-ene-2-carboxylate 在
甲醇 、
乙腈 、
甲烷 、
乙醚 作用下,
以
甲酸 为溶剂,
反应 4.0h,
以to obtain 53 mg of racemic 7-[2-(2-aminothiazol-4-yl)-2-methoxyimino-acetamido]-3-(carboxymethylthio)-8-oxo-4-thia-1-azabicyclo[4,2,0]oct-2-ene-2-carboxylic acid melting at 190° to 200° C. (with decomposition)的产率得到Racemic 7-[2-(2-aminothiazol-4-yl)-2-methoxyimino-acetamido]-3-(carboxymethylthio)-8-oxo-4-thia-1-azabicyclo[4,2,0]oct-2-ene-2-carboxylic acid