Synthesis and biological properties of some 3-((N-subtstituted-amino)pyridinium-4-thiomethyl)-7-((2-amino-thiazol-4-yl)-2-(Z)-(methoxyimino)acetamido)ceph-3-em-4-carboxylates.
Synthesis and biological properties of some 3-((N-subtstituted-amino)pyridinium-4-thiomethyl)-7-((2-amino-thiazol-4-yl)-2-(Z)-(methoxyimino)acetamido)ceph-3-em-4-carboxylates.
Synthesis and biological properties of some 3-((N-subtstituted-amino)pyridinium-4-thiomethyl)-7-((2-amino-thiazol-4-yl)-2-(Z)-(methoxyimino)acetamido)ceph-3-em-4-carboxylates.
作者:CLIVE L. BRANCH、RICHARD G. ADAMS、EDWARD G. BRAIN、ANGELA W. GUEST、FRANK P. HARRINGTON、SARAH J. KNOTT、MICHAEL J. PEARSON、ISKANDER I. ZOMAYA
DOI:10.7164/antibiotics.46.1289
日期:——
The synthesis and antibacterial activity of a series of β-lactamase stable, broad spectrum 7-[2-(2-amino-thiazol-4-yl)-2-(Z)-(methoxyimino)acetamido]-cephalosporins, characterised by a C-3-[N-(substituted-amino)pyridinium-4-thiomethyl] group, is described. Gram-positive and Gramnegative bacteria including extended spectrum β-lactamase-producing strains were most susceptible to the N-amino- and N-methylamino derivatives (3a) and (3b); with the exception of Pseudomonas aeruginosa, (3b) was more active in vitro and in vivo than cefpirome or ceftazidime.