7-[D,L-α-tert. butoxycarbonylamino-(1,3-dithiin-5-yl)-acetamido]-2-carboxy-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene 在
三氟乙酸 作用下,
以
苯甲醚 为溶剂,
生成 7-[D,L-α-amino-(1,3-dithiin-5-yl)-acetamido]-2-carboxy-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene trifluoroacetate