| 摘要 |
24205-735 Compounds having a 4,10-dioxo-3-oxa-7-thia-1-azatri-cyclo¢6,2,0,02'6!decane-2-carboxylic acid skeleton as the base structure, their esters and their salts, are useful antibacterial agents. Preferred among such components are those having the formula: wherein R1 is H, NH2 or an organic residue bonded via carbon or nitrogen, R2 is H, -OCH3 or -NHCHO, R3, R4 and R5 independently are H or organic residue. |
