申请人:Yamanouchi Pharmaceutical Co., Ltd.
公开号:US04474779A1
公开(公告)日:1984-10-02
Cephalosporin compounds represented by the general formula ##STR1## wherein R represents a group shown by formula ##STR2## wherein R.sup.1 represents a hydrogen atom or a lower alkyl group of 1-3 carbon atoms and R.sup.2 represents a hydrogen atom, a lower alkyl group of 1-3 carbon atoms, a phenyl group which may be substituted by an amino or hydroxy group, a cyano group, a carboxy group, or a carboxymethyl group; said R.sup.1 and R.sup.2 may form a cycloalkylidene group of 4-6 carbon atoms together with the carbon atom to which they are bonded) or a group shown by formula --CH.sub.2 --R.sup.3 (wherein R.sup.3 represents a hydrogen atom, a halogenomethyl group, a carbamoyl group, a carboxymethyl group, .alpha.4-carboxy-3-hydroxyisothiazol-5-yl-thiomethyl group, or .alpha.2-carboxyphenylthiomethyl group); R' represents a group shown by formula ##STR3## (wherein R.sub.a represents a carboxy group, a cyano group, or a carbamoyl group which may be substituted by a lower alkyl group of 1-3 carbon atoms and R.sub.b represents a hydrogen atom or an amino group) or a group shown by formula ##STR4## (wherein R.sub.a and R.sub.b have the same significance as above); and the waveline .about. shows an anti-form or syn-form bond and the salts thereof. They possess excellent antibacterial activities against gram positive bacteria and gram negative bacteria, in particular, pseudomonas aeruginosa and are useful as anti-bacterial agents.
该专利描述了头孢菌素类化合物的通用公式,其中R表示由公式所示的基团,其中R1表示氢原子或1-3个碳原子的较低烷基基团,R2表示氢原子、1-3个碳原子的较低烷基基团、苯基,该苯基可能被氨基或羟基取代、氰基、羧基或羧甲基基团;其中R1和R2可以与它们所连接的碳原子一起形成4-6个碳原子的环烷基亚基基团,或者是由公式—CH2—R3所示的基团(其中R3表示氢原子、卤代甲基基团、氨基甲酰基团、羧甲基基团、α-4-羧基-3-羟基异噻唑-5-基硫甲基基团或α-2-羧基苯基硫甲基基团);R'表示由公式所示的基团,其中Ra表示羧基、氰基或者可以被1-3个碳原子的较低烷基基团取代的氨基甲酰基团,Rb表示氢原子或氨基基团;或者是由公式所示的基团(其中Ra和Rb具有与上述相同的意义);波浪线表示反式键或顺式键,以及它们的盐。这些化合物对革兰氏阳性菌和革兰氏阴性菌,尤其是铜绿假单胞菌具有出色的抗菌活性,并可用作抗菌剂。