Balsamo, A New N-substituted 7-aminocephalosporanic acid derivatives as potential agents against Streptococcus pneumoniae. Synthesis and in vitro activity. [electronic resource] - Bioorganic & medicinal chemistry letters Apr 1999 - 1035-40 p. digital Publication Type: Journal Article ISSN: 0960-894X Standard No.: 10.1016/s0960-894x(99)00127-4 doi Subjects--Topical Terms: Anti-Bacterial Agents--chemical synthesisCephalosporins--chemical synthesisMicrobial Sensitivity TestsStaphylococcus aureus--drug effectsStreptococcus pneumoniae--drug effectsStreptococcus pyogenes--drug effectsStructure-Activity Relationship