Cephalosporin antibiotics having a 3-position substituent of the formula: ##STR1## are described, wherein X is --CO--, --SO.sub.2 -- or --COCH.sub.2 --; Y is --CO--, --SO.sub.2 -- or --CH.sub.2 --; Q is a benzene, pyridine or naphthalene ring, R.sup.1 and R.sup.2 are ortho with respect to each other and are independently hydroxy or of the formula O--M wherein M is a moiety and the O--M bond is cleavable in vivo and ring Q may be further substituted by a variety of atoms and groups. Processes for their preparation and use are described.
Cephalosporins, processes for their preparation, pharmaceutical compositions containing them and intermediates therefor
申请人:ZENECA LIMITED
公开号:EP0412763B1
公开(公告)日:1996-07-10
US5219848A
申请人:——
公开号:US5219848A
公开(公告)日:1993-06-15
Synthesis and biological activity of C-3' ortho dihydroxyphthalimido cephalosporins.
作者:MARIE-GENEVIÉVE BAUDART、LAURENT F. HENNEQUIN
DOI:10.7164/antibiotics.46.1458
日期:——
A series of C-3' ortho dihydroxyphthalimido cephalosporins 3-7 has been prepared by reaction of C-3' aminomethyl cephalosporin 411). with the corresponding N-carboethoxyphthalimides 23-25, 37, 38. These new caphalosporins exhibit excellent in vitro Gram-negative activities, including Pseudomonas aeruginosa, excellent β-lactamases stability and pharmacokinetics equivalent or better than ceftriaxone.