Cephalosporin analogues and processes for the preparation thereof
申请人:——
公开号:US04264597A1
公开(公告)日:1981-04-28
Compounds of the formula ##STR1## wherein X is --O--or --S--; R.sup.1 is amino or a substituted amino group; R.sup.2 is carboxy or a protected carboxy group; and the heavy solid line means single or double bond; the compounds are useful in the treatment of infectious diseases particularly fungal infection, in human beings and animals.
A novel tricyclic β-lactam exhibiting potent antibacterial activities against carbapenem-resistant Enterobacterales: Synthesis and structure-activity-relationships
evaluated for in vitro antibacterial activities against carbapenem-resistant Enterobacterales (CREs). Starting from a reported tricyclic β-lactam that combined the cephalosporin skeleton having a γ-lactone ring with a carboxylic acid group, which was reported as a unique partial structure of Lactivicin, we identified the compound which shows potent antibacterial activities against all tested CREs by introducing
Tricyclic penam compounds, their production and their use
申请人:Takeda Chemical Industries, Ltd.
公开号:EP0249909A1
公开(公告)日:1987-12-23
The compounds, having a 4,10-dioxo-3-oxa-7-thia-1- azatricyclo[6,2,0,02,6]decane-2-carboxylic acid skeleton as the base structure,
their esters and their salts, are useful antibacterial agents.