申请人:Yamanouchi Pharmaceutical Co., Ltd.
公开号:US03939150A1
公开(公告)日:1976-02-17
The penicillin derivatives represented by the formula ##SPC1## Wherein ring A represents a 5- or 6-membered single or fused ring which may contain one or more nitrogen atoms, an oxygen atom, or a sulfur atom; R.sup.1, R.sup.2, and R.sup.3, which may be the same or different, each represents a hydrogen atom, a hydroxy group, a lower alkyl group, a nitro group, a halogen atom, or an oxo group; and B represents a p-hydroxyphenyl group or a 1,4-cyclohexadien -1-yl group, and their nontoxic pharmaceutically acceptable salts. The compounds are antibiotics having excellent antibacterial activity in particular with respect to the Pseudomonas genus.
公式为##SPC1##的青霉素衍生物,其中环A表示一个5-或6-成员的单环或融合环,可能包含一个或多个氮原子、一个氧原子或一个硫原子;R.sup.1、R.sup.2和R.sup.3可以相同也可以不同,每个代表一个氢原子、一个羟基、一个较低的烷基、一个硝基、一个卤素原子或一个氧基;B表示一个p-羟基苯基或一个1,4-环己二烯-1-基基团,以及它们的无毒药学上可接受的盐。这些化合物是抗生素,特别是对假单胞菌属具有优异的抗菌活性。