Cephalosporin derivatives, processes for their manufacture, pharmaceutical compositions containing them and intermediates therefor
申请人:ICI PHARMA
公开号:EP0031708B1
公开(公告)日:1984-06-13
US4463173A
申请人:——
公开号:US4463173A
公开(公告)日:1984-07-31
US4492692A
申请人:——
公开号:US4492692A
公开(公告)日:1985-01-08
Cephalosporin derivatives
申请人:Imperial Chemical Industries PLC
公开号:US04492692A1
公开(公告)日:1985-01-08
A cephalosporin derivative of the formula: ##STR1## in which R.sup.0 is a hydrogen atom or a methyl radical, R.sup.1 is any one of the C-3 substituents from antibacterially-active cephalosporins known in the art; R.sup.2 is any one of the C-4 substituents from antibacterially-active cephalosporins known in the art; R.sup.3 is a hydrogen atom or a 1-6C alkoxy or 1-6C alkylthio radical; X.sup.1 is a sulphur or oxygen atom, a CH.sub.2 radical or a radical of the formula NR.sup.7 in which R.sup.7 is a hydrogen atom, a 1-6C alkyl, formyl or benzyl radical; X.sup.2 is a nitrogen atom or a radical of the formula N.sup..sym. -R.sup.7 ; R.sup.4 and R.sup.7, and R.sup.5 and R.sup.6 are a variety of substituents which are described in the specification; and the pharmaceutically-acceptable acid- or base-addition salts thereof. Pharmaceutical compositions, manufacturing processes and intermediates are also described.