title: Monocyclic beta-lactam antibiotics: synthesis and antibacterial activity of 4-(substituted ethyl)-2-azetidinone-1-sulfonic acid derivatives.
abstract: The synthesis and antibacterial activity of sodium (3S,4R)-3-[2-(2-aminothiazol-4-yl)-(Z)-2-(O-substituted oxyimino)acetamido]-2-azetidinone-1-sulfonates having various substituted ethyl groups at the C-4 position are described. Among various substituents explored, the (substituted isothiuronio)ethyl groups were found to have strong antibacterial activity against a variety of Gram-negative bacteria, and moreover, the ethylene isothiuronium derivative exhibited moderate antibacterial activity against Staphylococcus aureus.
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis*; D055598:Chemical Phenomena; D002621:Chemistry; D006090:Gram-Negative Bacteria / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D011550:Pseudomonas aeruginosa / Q000187:drug effects; D013211:Staphylococcus aureus / Q000187:drug effects; D013329:Structure-Activity Relationship; D013451:Sulfonic Acids; D047090:beta-Lactams
chemical_list: D000900:Anti-Bacterial Agents; D013451:Sulfonic Acids; D047090:beta-Lactams