FIELD: organic chemistry, biochemistry, pharmacy.
SUBSTANCE: invention relates to a heteroarylamino-substituted derivative of dihydropyrimido[4,5-d]pyrimidinone taken among of compounds order corresponding to the formula (I): 
wherein a subscript symbol n mans a whole number 1; R1 means (C1-C6)-alkyl (substituted with one or two substitutes taken among group involving hydroxy group, (C1-C6)-alkoxy group and others), piperidinyl-(C0-C4)-alkyl [wherein piperidinyl fragment is monosubstituted optionally with benzyl, carbamoyl, (C1-C4)-alkane sulfonyl, (C1-C6)-alkyl and so on], morpholinyl-(C0-C4)-alkyl, tetrahydropyranyl-(C0-C4)-alkyl, 2-oxoimidazolidinyl-(C0-C4)-alkyl, 2-oxopyrrolidinyl-(C0-C4)-alkyl or 1,1-dioxotetrahydrothienyl-(C0-C4)-alkyl, (C3-C6)-cycloalkyl (monosubstituted with monohydroxy group, (C1-C6)-alkoxy group and so on), 1,4-dioxaspiro[4,5]decane-8-yl, 2,4-dione-1,3-diazaspiro[4,5]decane-8-yl or (3-hydroxymethyl-3-methyl)-1,5-dioxaspiro[5,5]undecane-9-yl; R2 means (C1-C4)-alkyl, halogen atom; R3 means hydrogen atom, (C1-C6)-alkyl (optionally substituted with one or two substitutes taken among group involving (C1-C4)-alkoxy group, pyrrolidinyl, di-(C1-C4-alkyl)-amino-group and so on), phenyl, benzyl or piperidinyl (N-substituted optionally with (C1-C4)-alkyl); R4 means hydrogen atom, and also its individual isomers, racemic and nonracemic mixtures of isomers, prodrugs and its pharmaceutically acceptable salts. Also, invention proposes a pharmaceutical composition possessing inhibitory activity with respect to activity of p38 MAP kinase. The composition comprises a heteroalkylamino-derivative of dihydropyrimido[4,5-d]pyrimidinone of the formula (I), isomer, racemic or nonracemic mixture of isomers or its pharmaceutically acceptable salt in mixture with at least one pharmaceutically acceptable vehicle. Invention provides representing a heteroalkylamino-substituted derivative of dihydropyrimido[4,5-d]pyrimidinone possessing inhibitory activity with respect to activity of p38 MAP kinase.
EFFECT: valuable biochemical properties of compounds and composition.
14 cl, 4 tbl, 90 ex
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