申请人:Kyorin Pharmaceutical Co., Ltd.
公开号:US05244892A1
公开(公告)日:1993-09-14
Novel cephem compounds represented by a formula [I] and pharmacologically admissible salts or capable of physiologically hydrolyzable nontoxic esters thereof are disclosed. ##STR1## [wherein R.sup.1 indicates a straight-chain or branched lower alkyl group, which may be substituted by carboxyl group which may be protected, trityl group, hydrogen atom or fluorine-substituted lower alkyl group, R.sup.2 indicates a hydrogen atom, metal atom, protective group for carboxyl group or ester residue producible hydrolyzable ester in vivo, R.sup.3, R.sup.4, R.sup.5 and R.sup.6, which may be identical or different, indicate hydrogen atoms, halogen atoms, straight-chain or branched lower alkyl groups, which may be substituted, mercapto groups, which may be substituted, lower alkylamino groups, hydroxyl groups, which may be protected, lower alkoxy groups, lower alkanoyl groups, lower alkoxycarbonyl groups, or lower alkylenedioxy groups, which may be substituted, being maybe formed with R.sup.3 and R.sup.4, R.sup.7 indicates a hydrogen atom, cyano group, halogen atom or COOR.sup.8 (R.sup.8 is hydrogen or lower alkyl group), R.sup.9 indicates an amino group, which may be protected, Z indicates N or CH, and n indicates 0 or 1]. Preparation processes for them and antibacterial agents containing them as effective ingredients are also claimed.
本发明揭示了由公式[I]表示的新型头孢菌素化合物及其药理学上可接受的盐或能够生理水解的无毒酯。其中,R1表示直链或支链低级烷基,其可以被羧基保护,三苯甲基基团,氢原子或氟代低级烷基取代;R2表示氢原子,金属原子,羧基保护基或能够在体内产生可水解酯基的酯残基;R3,R4,R5和R6可以相同也可以不同,表示氢原子,卤原子,直链或支链低级烷基,其可以被取代,可取代的巯基,低级烷基氨基,羟基,其可以被保护的低级烷氧基,低级烷酰基,低级烷氧羰基,或可取代的低级烷二氧基基团,可以与R3和R4一起形成;R7表示氢原子,氰基,卤原子或COOR8(R8为氢或低级烷基);R9表示氨基,其可以被保护;Z表示N或CH;n表示0或1。本发明还声明了其制备过程以及含有其作为有效成分的抗菌剂。