The invention provides 7-trichloroacetamido-3-desacetoxy-cephalosporanic acid derivatives of the formula: ##SPC1## Wherein R is a group which protects the carboxylic acid radical, which can be converted into 7-amino-3-desacetoxycephalosporanic acid by replacing the R-- and Cl.sub.3 C--CO-- radicals by hydrogen atoms.
该发明提供了式为:##
SPC1## 的7-三
氯乙酰胺基-3-去乙酰氧头孢烷酸衍
生物,其中R是保护羧基的基团,该基团可以通过用氢原子替换R-和Cl3C-CO-基团来转化为7-
氨基-3-去乙酰氧头孢烷酸。