| 摘要 |
The cephalosporin derivatives of the general formula <IMAGE> in which X is one of the groups <IMAGE> in which R<1> is lower alkyl or (together with the oxygen) a readily hydrolysable ether group, and readily hydrolysable esters of the compounds of the formula I in which X is the group (b) or (a) with R<1> = lower alkyl, and salts of these compounds and hydrates of the compounds of the formula I and of their esters and salts, are used in products for the treatment of diseases. |
