DEHALOGENATED COMPOUNDS, ANTIBACTERIAL AGENT AND THERAPEUTIC AGENT BASED ON THEREOF, METHOD FOR PREPARING ANTIBACTERIAL OR MEDICINAL AGENT, USING DEHALOGENATED COMPOUNDS FOR PREPARING ANTIBACTERIAL OR MEDICINAL AGENT

FIELD: organic chemistry, chemical technology, medicine, pharmacy. ^ SUBSTANCE: invention relates to a synthetic quinolone agent that is effective as medicinal agents, veterinary preparations, drugs used in fishing industry or as antibacterial preserving agents. Invention describes compound represented by the following general formula (I): as its separate isomers or their mixture, its salt and their hydrates wherein R1 represents cyclic alkyl group comprising 3-6 carbon atoms that can comprise a substitute chosen from halogen atom; R2 represents hydrogen atom; R3 represents hydrogen atom; R4 represents hydrogen atom, amino-group, hydroxyl group; A represents nitrogen atom or part of structure as given in the invention claim; each R5 and R6 represents independently alkyl group comprising 1-6 carbon atoms or hydrogen atom; n means a whole number 1 or 2. Also, invention describes antibacterial agent and therapeutic agent based on compounds of the formula (I) used in treatment of infectious disease, a method for preparing antibacterial agent, a method for preparing a medicinal agent used in treatment of infectious disease and using compound of the formula (I) for preparing an antibacterial agent and using compound of the formula (I) for preparing a medicinal agent used in treatment of infectious disease. Invention provides novel compounds possessing useful biological properties. ^ EFFECT: improved preparing method of agents, valuable medicinal properties of compounds and agents. ^ 35 cl, 2 tbl, 15 ex