申请人:Glaxo Laboratories Limited
公开号:US03994884A1
公开(公告)日:1976-11-30
The invention is concerned with .DELTA..sup.3 -4-carboxy cephalosporin antibiotics possessing a 3-vinyl group and having 2,2-disubstituted acetamido group at the 7-position.
这项发明涉及具有3-乙烯基和在7位具有2,2-二取代乙酰胺基团的.DELTA..sup.3-4-羧基头孢菌素抗生素。