[EN] NOVEL AMORPHOUS HYDRATE OF A CEPHALOSPORIN ANTIBIOTIC<br/>[FR] NOUVEL HYDRATE AMORPHE D'UNE CEPHALOSPORINE
申请人:ORCHID CHEMICALS & PHARM LTD
公开号:WO2004046154A1
公开(公告)日:2004-06-03
A process for the preparation of cefdinir of the formula (I) the said process comprising the steps of :i) condensing 7-amino-3-cephem-4-carboxylic acid of the formula (XII) wherein R1 is as defined above with compound of the formula (XIII) in the presence of a tertiary amine and an organic solvent, followed by treatment with a base to produce a salt of compound formula (XIV), wherein M+ is a counter ion and ii) hydrolyzing the compound of the formula (XIV) using an acid in the presence of a solvent to produce cefdinir of formula (I).
一种制备Cefdinir(I)的方法,该方法包括以下步骤:i)在三级胺和有机溶剂的存在下,将式(XII)的7-氨基-3-头孢菌素-4-羧酸(其中R1如上所定义)与式(XIII)的化合物缩合,随后用碱处理以产生化合物式(XIV)的盐,其中M +是一个反离子;ii)在溶剂的存在下,使用酸水解式(XIV)的化合物以产生式(I)的Cefdinir。