The subject invention includes 1-oxa-1-dethia- cephalosporin compounds represented by the general formula:
wherein R' is a group of the formula:
where R4 is loweralkyl (1-6 carbons) including a methyl group or an ethyl group, or R' is a group of the formula:
where R5 is a hydrogen atom, a 4-ethyl-2,3-dioxopiperazin-1-yl group or a 5- or 6-membered heterocyclic ring having 2 nitrogen atoms as the sole hetero substituent in the ring and having at least one hetero group on the carbon adjacent to the ring nitrogens, and the carbon atom to which the asterisk is attached shows (R)-configuration or (S)-configuration or a mixture of these configurations; both of R2 and R3 are each a hydrogen atom and the other a methyl group, and a pharmaceutically acceptable hydrate, salt of ester thereof.
These compounds are useful as antibacterial agents.
本发明包括由通式表示的 1-氧杂-1-二
硫代-
头孢菌素化合物:
其中R'是式中的基团:
其中 R4 是低级烷基(1-6 个碳原子),包括甲基或乙基,或 R' 是式中的基团:
其中 R5 是氢原子、4-乙基-2,3-二氧代
哌嗪-1-基团或 5-或 6-元杂环,环中有 2 个氮原子作为唯一的杂取代基,且与环上氮原子相邻的碳上至少有一个杂基,星号所连接的碳原子呈(R)-构型或(S)-构型或这些构型的混合物;R2 和 R3 分别为氢原子和甲基,以及其药学上可接受的
水合物、盐或酯。
这些化合物可用作抗菌剂。