A process for preparation of 7-[D-α-amino-α-(4-hydroxyphenyl)acetamido]-3-(1-propen-1-yl)-3-cephem-4-carboxylic acid viz. Cefprozil of formula (I) igh purity, substantially free of impurities,
which comprises preparation of mixed acid anhydride by selecting the sequence and temperature of addition of the reagents and its subsequent condensation with a protected 7-APCA; followed by hydrolysis, isolation and purification to give Cefprozil of formula (I) in the form of a monohydrate.
一种制备高纯度、基本无杂质的7-[D-α-
氨基-α-(
4-羟基苯基)乙酰
氨基]-3-(
1-丙烯-1-基)-3-头孢烷-4-
羧酸(即Cefprozil)的方法,包括通过选择试剂的加入顺序和温度来制备混合酸酐,并将其与保护的
7-APCA缩合;随后进行
水解、分离和纯化,得到以单
水合物形式存在的化合物Cefprozil。