| abstract |
PROBLEM TO BE SOLVED: To provide a cephem compound having excellent antibacterial activity against various gram-positive pathogenic bacteria, high water solubility, and low toxicity. SOLUTION: The cephem compound of the present invention has a general formula: Wherein R 1 is a carboxyl group or the like, R 2 is a 5- to 6-membered aromatic ring group, and R is Is shown. Here, R 3 represents a lower alkyl group or the like, and B − represents an anion. f represents 0 or 1. The ring represented by C represents a 5-membered heterocyclic ring having 4 or less nitrogen atoms. ]. |