NOVEL NITROGENATED HETEROCYCLIC COMPOUND AND SALT THEREOF

摘要

A nitrogenated heterocyclic compound represented by the general formula: wherein the broken line represents a single bond or a double bond; R¹, R², R³, R⁴ and R⁵ independently represent a hydrogen or halogen atom, a lower alkyl, aryl, lower alkoxy or monocyclic heterocyclic group which may be substituted or the like; R⁶ represents a lower alkyl, aryl, monocyclic heterocyclic, dicyclic heterocyclic or tricyclic heterocyclic group which may be substituted; X¹ represents a lower alkylene group or the like; X² represents a lower alkylene, lower alkenylene or lower alkynilene group which may be substituted; X³ represents an oxygen or sulfur atom, a sulfiny or sulfonyl group or the like; Y¹ represents a cyclic group containing a bivalent nitrogen which may be substituted or the like; and Z¹ represents a nitrogen atom, a carbon atom which may be substituted or the like, or a salt thereof. The compound or salt has a potent antibacterial activity and a high safety, and is therefore useful as an excellent antibacterial agent.