申请人:RANBAXY LABORATORIES, LTD.
公开号:EP0806424A1
公开(公告)日:1997-11-12
A process for preparing certain cephalosporin antibiotics, namely, cefotaxime, cefetemet, and ceftriaxone sodium comprising acylation of 7-amino-3-cephem-4-carboxylic acid derivatives with 2-mercapto-5-methyl-1,3,4-thiadiazolyl-(Z)-2-(2-aminothiazol-4-yl)-2-methoxyiminoacetate having the formula:
一种制备某些头孢菌素类抗生素,即头孢噻肟、头孢替美和头孢曲松钠的工艺,包括 7-氨基-3-头孢-4-羧酸衍生物与 2-巯基-5-甲基-1,3,4-噻二唑基-(Z)-2-(2-氨基噻唑-4-基)-2-甲氧基亚胺乙酸酯的酰化反应,其式如下: 2-巯基-5-甲基-1,3,4-噻二唑基-(Z)-2-(2-氨基噻唑-4-基)-2-甲氧基亚胺乙酸酯: