There are described compounds of formula (I) ##STR1## wherein R, R.sub.1 and R.sub.2 which may be the same or different, each represents a hydrogen atom or a C.sub.1-4 alkyl group and R.sub.3 represents a C.sub.1-4 alkyl group with the proviso that, when both R.sub.1 and R.sub.2 represent hydrogen atoms, R.sub.3 represents other than a methyl group. These cefuroxime esters are valuable as providing orally administrable forms of the antibiotic cefuroxime. Methods of preparing cefuroxime esters, pharmaceutical compositions containing the esters and methods for their use in medicine are also described. Novel intermediates for use in the preparation of the cefuroxime esters are also described.
描述了式(I)的化合物##STR1##其中R、R.sub.1和R.sub.2可以相同也可以不同,分别代表氢原子或C.sub.1-4烷基团,而R.sub.3代表C.sub.1-4烷基团,但当R.sub.1和R.sub.2都代表氢原子时,R.sub.3代表除了甲基基团之外的其他基团。这些头孢噻
肟酯作为提供头孢噻
肟抗生素口服可用形式具有价值。还描述了制备头孢噻
肟酯的方法、含有这些酯的药物组合物以及在医学中使用它们的方法。还描述了用于制备头孢噻
肟酯的新中间体。