FIELD: pharmacology.SUBSTANCE: invention refers to derivatives if cyclic amine of formula (I), where A is a group, represented by the general formula (IIa), (IIb) or (IIc), where A is a group, provided by the general formula (IIa) or (IIb), R1 represents an alkyl group containing 1 or 2 carbon atoms and optionally substituted by a hydroxyl group, amine group or carboxyl group, R2 represents a hydrogen atom, R3 is a hydrigen atom or alkyl group containing 1 or 2 carbon atoms, R4 is a hydrogen atom or an alkylcarbonyl group, containing 2 carbon atoms, or an alkyl group, containing 1 or 2 carbon atoms and optionally substituted by alkylcarbonylamine group, containing 2 carbon atoms, and n is 1 or 2, in which, when R3 and R4, each independently represent an alkyl group, containing 1 or 2 carbon atoms, R1 represents an alkyl group containing 1 or 2 carbon atoms and substituted by a hydroxyl group, amine group or carboxyl group； and when A is a group, represented by the general formula (IIc), R1 represents an alkyl group, containing 1 carbon atom and substituted by a carboxyl group, R2 represents a hydrogen atom and X represents CH2, O or -NR5 and R5 is an alkyl group, containing 1 carbon atom. Also, the invention relates to a prodrug of the compound of formula (I), pharmaceutical, analgetic agent and therapeutic agent based on compounds of formula (I), or its prodrug.EFFECT: new derivatives of imidazol, useful in the treatment of pain, have been obtained.11 cl, 24 dwg, 5 tbl, 73 exИзобретение относится к области органической химии, а именно к производным циклического амина формулы (I), где A представляет собой группу, представленную общей формулой (IIa), (IIb) или (IIc), где, когда A представляет собой группу, представленную общей формулой (IIa) или (IIb), R1 представляет собой алкильную группу, содержащую 1 или 2 атома углерода и необязательно замещенную гидроксильной группой, аминогруппой или карбоксильной группой, R2 представляет собой атом водорода, R3 представляет с
