Quaternary heterocyclylamino .beta.-lactams: a generic alternative to the classical acylamino side chain
作者:John Hannah、Charles R. Johnson、Arthur F. Wagner、Edward Walton
DOI:10.1021/jm00346a024
日期:1982.4
beta-[(1-substituted-4-pyridinio)amino]ceph-3-em-4-carboxylates have been found to be interesting new classes of antibacterial beta-lactams, readily available by SN2 Ar coupling of fluoro-substituted quaternized pyridines and appropriate amino lactam carboxylic acids. Compared to penicillin G, the penam 12c exhibited a spectrum extended to Gram-negative species, such as Escherichia, Shigella, Klebsiella