Cephem compounds, pharmaceutically acceptable salts thereof, and methods of using same, wherein the compound has a bicyclic nitrogen-containing aromatic heterocyclic ring as the quaternary ammoniomethyl group at the 3-position and one or both of a terminal amidine residue (substituted or unsubstituted) attached to an aryl or a 5- or 6- membered heteroaryl group (substituted or unsubstituted) which is further attached through a spacer to the free N-atom of the quaternary nitrogen-containing bicyclic ring at the 3-side chain, or a terminal guanidine residue attached to an aryl or a 5- or 6- membered heteroaryl group (substituted or unsubstituted) which is further attached through a spacer to the free N-atom of the quaternary nitrogen-containing bicyclic ring at the 3-side chain.
头孢菌素化合物,其药用可接受的盐,以及使用方法,其中该化合物在3位具有一个含氮的芳香杂环环作为季
铵甲基基团,并且一个或两个末端酰胺基团(取代或未取代)连接到芳基或5-或6-成员杂环基团(取代或未取代),后者通过一个间隔连接到季
铵含氮的双环环的自由N原子的3侧链,或者连接到芳基或5-或6-成员杂环基团(取代或未取代)的末端
胍基残基,后者通过一个间隔连接到季
铵含氮的双环环的自由N原子的3侧链。