申请人:MEIJI SEIKA KAISHA LTD.
公开号:EP0315997A2
公开(公告)日:1989-05-17
This invention provides new cephalosporin compounds represented by the following general formula:
[wherein R¹ and R² are same or different hydrogen atom or a lower alkyl group of 1 to 5 carbon atoms; R³ is a lower alkyl group which may optionally be substituted with a halogen atom (or atoms), an alkenyl group, or a cycloalkylmethyl group of 3 to 6 carbon atoms; and A is hydrogen atom or residue of a nucleophilic compound] and pharmacologically acceptable salts thereof. These novel compounds have broad-spectrum antibacterial activity against Gram-positive and -negative bacteria including Pseudomonas aeruginosa, as well as against a great variety of β-lactamase-producing strains.
本发明提供了由以下通式表示的新的头孢菌素化合物:
[其中 R¹ 和 R² 是相同或不同的氢原子或 1 至 5 个碳原子的低级烷基;R³ 是低级烷基,可任选被卤原子(或原子)、烯基或 3 至 6 个碳原子的环烷基甲基取代;A 是氢原子或亲核化合物的残基]及其药理学上可接受的盐。这些新型化合物对包括铜绿假单胞菌在内的革兰氏阳性和阴性细菌以及各种产β-内酰胺酶的菌株具有广谱抗菌活性。