申请人:Meiji Seika Kaisha, Ltd.
公开号:US04839350A1
公开(公告)日:1989-06-13
A class of new caphalosporin compounds (syn-isomer) is now provided, which is useful as antibacterial agent and is represented by the general formula (I) ##STR1## wherein R.sup.1 is an amino group or a protected amino group; R.sup.2 is a lower alkyl group, a carboxymethyl group or a protected carboxymethyl group; R.sup.3 is a hydrogen atom, a salt-forming cation or a carboxyl-protecting group; A is an unsubstituted or substituted phenyl group, an unsubstituted or substituted furyl group, an unsubstituted or substituted thiazolyl group or an unsubstituted or substituted 3-lower-alkylthiazolio group, and a pharmaceutically acceptable salt or ester thereof.
提供了一类新的头孢菌素化合物(顺式异构体),其作为抗菌剂具有用途,并由通式(I)##STR1##表示,其中R1是氨基或保护的氨基;R2是低级烷基、羧甲基或保护的羧甲基;R3是氢原子、成盐阳离子或羧基保护基;A是未取代或取代的苯基、未取代或取代的呋喃基、未取代或取代的噻唑基或未取代或取代的3-低级烷基噻唑鎓基,以及其药学上可接受的盐或酯。