Antibiotic C-3 catechol-substituted cephalosporin compounds, compositions and use thereof
申请人:Bristol-Myers Squibb Company
公开号:EP0474049A1
公开(公告)日:1992-03-11
This invention relates to novel cephalosporin derivatives of the formula
wherein
R¹ is hydrogen, a straight, branched, or cyclic lower alkyl group having up to six carbon atoms or a radical of the formula
in which R³ and R⁴ are each independently hydrogen, methyl or ethyl, or R³ and R⁴, taken together with the carbon atom to which they are attached, may be a cycloalkylidene ring containing from 3 to 5 carbon atoms;
R² is a radical selected from the group consisting of
wherein R⁵ is hydrogen or acetyl; R⁶, R⁷ and R⁸ each are independently C₁₋₅ alkyl; n is 1 or 2; and y is 1 to 5.
In another aspect, this invention relates to compounds of formula I and their nontoxic pharmaeutically acceptable salts, physiologically hydrolyzable esters or solvates.
Representative compounds of this invention were selected for testing and were shown to display potent antibacterial activity.
本发明涉及式如下的新型头孢菌素衍生物
式中
R¹为氢、具有最多六个碳原子的直链、支链或环状低级烷基或式中的一个基团
其中 R³ 和 R⁴ 各自独立地为氢、甲基或乙基,或 R³ 和 R⁴ 连同其所连接的碳原子可为含有 3 至 5 个碳原子的亚环烷基环;
R² 是选自以下组成的基团
其中 R⁵ 是氢或乙酰基;R⁶、R⁷ 和 R⁸ 各自独立地是 C₁₋₅ 烷基;n 是 1 或 2;以及 y 是 1 至 5。
在另一方面,本发明涉及式 I 化合物及其无毒的药物学上可接受的盐、生理上可水解的酯或溶液。
本发明选择了具有代表性的化合物进行测试,结果表明这些化合物具有很强的抗菌活性。