FIELD: chemistry.
SUBSTANCE: described is a compound of general formula: 
[1], where R1 denotes an optionally substituted C2-C12 alkyl, aryl or heterocyclic group which can be a mono- or bicyclic 5-11-member radical, where the heteroatoms can be nitrogen, oxygen or sulphur; X1 denotes C2-C4 an alkylene group; X2 denotes a bond; X3 denotes a group of general formula NR3 or CR4R5NR3 (where R3 denotes a hydrogen atom, optionally substituted lower alkyl group or imino-protective group) and R4 and R5 are identical or different, and each denotes a hydrogen atom or a lower alkyl group or bond; X4 denotes a lower alkylene or lower alkenylene or lower alkynylene group, which can be substituted with one or more oxo groups or a bond; X5 denotes a sulphur atom or bond; Y1 denotes an optionally substituted divalent 4-, 5- or 6-member alicyclic hydrocarbon residue or an optionally subsituted divalent 5- or 6-member alicyclic amine residue, where the heteroatoms can be nitrogen or oxygen; Z1, Z2, Z3, Z4, Z5 and Z6 are identical or different, and each denotes a nitrogen atom or a group of general formula CR7 (where R7 denotes a hydrogen atom, a halogen atom, a hydroxyl group, a cyano group, an optionally substituted amino group, or an amino group substituted with one or more C1-6 alkyl groups, a lower alkyl group, a cycloalkyl, a lower alkoxy group or a monocyclic 5-member heterocyclic group which can be substituted with one or more halogen atoms, where the heteroatoms can be nitrogen, acid or sulphur or a group of general formula Q1CO2R10 (where R10 denotes a carboxyl-protective group and Q1 denotes a lower alkenylene group), provided that at least one of Z3, Z4, Z5 and Z6 denotes a nitrogen atom, or salt thereof. The invention also describes an antimicrobial agent based on said compound.
EFFECT: novel compounds which can be used as antimicrobial agents are obtained and described.
25 cl, 176 ex, 6 tbl
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