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.