STUDIES OF 7β-[2-(AMINOARYL)ACETAMIDO]- CEPHALOSPORIN DERIVATIVES

III. SYNTHESIS AND STRUCTURE-ACTIVITY RELATIONSHIPS IN THE AMINOTHIADIAZOLE SERIES

Abstract

The synthesis and in vitro antibacterial activity of 7β-[2-(5-amino-1, 2, 4-thiadiazol-3-yl)-2-oxyiminoacetamido]cephalosporins with various substituents at the 3-position in the cephem nucleus are described. Aminothiadiazolyl cephalosporins having pyridiniomethyl groups at the 3-position exhibited excellent activity against all organisms, particularly against Pseudomonas aeruginosa.