The compound represented by the formula:
where R' stands for amino or an organic residue bonded through nitrogen; R2 stands for carooxyl ora group derivable therefrom; R3, R4, R5, R6, R7 and R8 independently stand for hydrogen or an organic residue, including the case where R5 or R6 forms a chemical bond or a ring with R7 or R8: X stands for hvdrogen, methoxy or formylamino; or a salt thereof, pro- duceaole by the present method. exnibits excellent antimicrobial activity, and is utilized as antimicrobial agents.
Tricyclic cepham compounds, their production and use
申请人:Takeda Chemical Industries, Ltd.
公开号:EP0253337A2
公开(公告)日:1988-01-20
The compounds having a 4,11-dioxo-3-oxa8(or 7)-thia-1- azatricyclo[7,2,0,02,6]undecane-2-carboxylic acid skeleton as the base structure, their esters and their salts are useful antibacterial agents.