| 摘要 |
Compounds of the formula <IMAGE> in which R1 denotes hydroxyl or protected hydroxyl, R2 is carboxyl or functionally modified carboxyl, R3 represents a monocyclic heteroaryl radical having 1 to 4 ring nitrogen atoms and bonded via a ring nitrogen atom and m denotes an integer from 3 to 12, and salts thereof have antibacterial activity. The compounds of the formula I are prepared by processes known per se. |
