FIELD: chemistry.SUBSTANCE: invention relates to novel acyl thiourea derivatives of formula or a pharmaceutically acceptable salt thereo, where R1 is a hydrogen atom or a C1-3 alkyl group; R2 is a hydrogen atom, an optionally substituted C1-6 alkyl group, an optionally substituted C6-14 aromatic hydrocarbon group or an optionally substituted saturated or unsaturated 5-7-member heterocyclic group containing 1 or 2 nitrogen or sulphur atoms, or R1 and R2, together with the nitrogen atom which they are bonded, can form an optionally substituted nitrogen-containing saturated heterocyclic group selected from a group comprising pyrrolinyl, piperidinyl, piperazinyl or morpholino group; where the substitute is selected from a group comprising a halogen atom, a hydroxyl group, a cyano group, a nitro group, a C1-6 alkanoyl group, a C1-6 alkyl group, a C3-10 cycloalkyl group, a C2-6 alkenyl group, C1-6 alkoxy group, an amino group, a C1-6 alkylamino group, a C1-6 alkanoylamino group, a C1-6 alkylaminocarbonyl group, a C1-6 alkylsulphonyl group, a C6-14 aromatic group, a saturated or unsaturated 5-7-member heterocyclic group containing 1-4 nitrogen and/or oxygen atoms, a saturated or unsaturated 5-7-member heterocycyl-carbonyl group containing 1 or 2 nitrogen and/or oxygen atoms, and an oxo group; R3 is a C1-6 alkyl group; and R4 is a halogen atom; R5 and R6, which can be identical or different from each other, denote a hydrogen atom, a halogen atom, a C1-3 alkyl group which can be substituted with a halogen atom, or a C1-6 alkoxy group. The invention also relates to a pharmaceutical or anti-tumour agent based on the compound of formula (I) and use of the compound of formula (I).EFFECT: novel acetyl thiourea derivatives having c-Met inhibiting activity are obtained.11 cl, 2 dwg, 4 tbl, 56 exНастоящее изобретение относится к новым производным ацилтиомочевины формулы (I) или к его фармацевтически приемлемой соли, где R1 представляет собой атом водорода или C1-3 алкильную групп