To provide a new antibacterial agent of cephem compound expressing a wide antibacterial spectrum to various pathogenic bacteria.
The compound is expressed by formula (I), wherein Acyl expresses an acyl applicable to the β-lactam field; T expresses S, SO or O; the cyclic amine group expresses a heterocyclic group having a cationic N atom which may be substituted by a substituent except "-Y1-Ar1-Y2-R1" in the ring; Y1 and Y2 each independently express (1) a single bond, (2) a hetero-atom containing a group selected from the group comprising -NR2, -CO-, -O-, -S-, -SO- and the like; Ar1 expresses a carbon homocyclic group or a heterocyclic group; R1 expresses -COOH or an acid group biologically equivalent to the same; the waved line means cis, trans or the mixture of those.
YAMAWAKI KENJI
YOKOO KATSUMI
YONEZAWA SHIYUUJI
KII MAKOTO
Hiromitsu Takayama
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