An antibacterial 7-protected amino-3-oxyiminomethyl-3-cephem-4-carboxylic acid is prepared by the reaction of a 7-protected amino-3-formyl-3-cephem-4-carboxylic acid or its reactive derivatives with a hydroxylamine compound or its reactive derivatives, the process being more suitable for large scale production when coupled with fermentative production of a 3-hydroxymethyl-3-cephem-4-carboxylic acid followed by its direct oxidation.
一种抗菌的7-保护
氨基-3-氧
肟甲基-3-头孢基-4-
羧酸是通过7-保护
氨基-3-甲酰基-3-头孢基-4-
羧酸或其反应衍
生物与羟
肟化合物或其反应衍
生物反应制备而成。当与3-羟甲基-3-头孢基-4-
羧酸的发酵生产相结合,然后直接氧化,该过程更适合大规模生产。