申请人:Takeda Chemical Industries, Ltd.
公开号:US06174877B1
公开(公告)日:2001-01-16
A cephem compound of the formula:
wherein R1 stands for an optionally substituted lower alkyl group, R2 stands for H or a lower alkyl group, R3 stands for H, an optionally substituted hydrocarbon group, cyano group, a lower alkyloxy group or a lower alkylthio group, and the ring A stands for an optionally substituted non-quaternarized nitrogen-containing heterocyclic ring, provided that, when A is unsubstituted 2-pyridyl group, R3 stands for a group other than hydrogen, or their esters or salts, has excellent antibacterial activities, oral absorbability and stability, and is useful as an antibacterial agent.
一种头孢菌素类化合物,其化学式如下:其中R1代表可选择地取代的较低烷基基团,R2代表H或较低烷基基团,R3代表H、可选择地取代的碳氢基团、氰基、较低烷氧基或较低烷硫基团,环A代表可选择地取代的非季铵化氮杂环,但当A为未取代的2-吡啶基团时,R3代表除氢之外的基团,或它们的酯或盐,具有优异的抗菌活性、口服吸收性和稳定性,并且可用作抗菌剂。