发明授权
US5480879A Quinolonecarboxylic acids 失效
喹诺酮羧酸

Quinolonecarboxylic acids
摘要:
The invention relates to novel derivatives of quinolonecarboxylic acid and naphthyridonecarboxylic acid which are linked to a .beta.-lactam antibiotic, to their salts, to processes for their preparation and to antibacterial agents containing these derivatives.
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