| abstract |
(57) [Summary] (Modified) [Objective] To provide cephalosporins containing a substituted benzyloxyimino group in the side chain at the 7-position, a process for producing them, and a drug. 【Constitution】 Cephalosporin represented by. As a concrete example, [6R- [3 (E), 6α, 7β (Z)]]-1- [3 -[7-[[(2-Amino-4-thiazolyl) [[carboxy- (2,3-difluoro-4,5-dihydroxyphenyl) methoxy] imino] acetyl] amino] -2 -Carboxy-8-oxo-5-thia-1-azabicyclo [4.2.0] -2-octen-3-yl] -2-propenyl] imidazo [1,2-a] pyridinium inner salt . |