3-(1-methyl-1H-tetrazol-5-yl)thiomethyl-7-[2-formyloxy-2-(2-tert-pentyloxycarbonylamino-1,3-thiazol-4-yl)acetamido]-3-cephem-4-carboxylic acid 在
乙酸乙酯 、
水 、
magnesium sulfate 、
乙醚 作用下,
以
碳酸氢钠 为溶剂,
反应 22.0h,
以to give pale brown powder of 3-(1-methyl-1H-tetrazol-5-yl)thiomethyl-7-[2-hydroxy-2-(2-tert-pentyloxycarbonylamino-1,3-thiazol-4-yl)acetamido]-3-cephem-4-carboxylic acid, which的产率得到3-(1-methyl-1H-tetrazol-5-yl)thiomethyl-7-[2-hydroxy-2-(2-tert-pentyloxycarbonylamino-1,3-thiazol-4-yl)acetamido]-3-cephem-4-carboxylic acid