| 摘要 |
The novel compounds of the formula I, in which the substituents have the meaning given in Claim 1, are obtained by treating a suspension of an amphoteric cephalosporin of the formula II, or a solvate thereof, with an aldehyde of the formula R<2>-CHO. The condensation products which are obtained represent novel synthetic cephalosporins which can be used as anti-bacterial agents and also as feed additives for animals. <IMAGE> |
