| 摘要 |
FIELD: organic chemistry, biochemistry, medicine. ^ SUBSTANCE: invention describes compound of the general formula (3): wherein R15 represents a heterocyclic group chosen from 3-7-membered saturated or 4,7-membered unsaturated monocyclic heterocyclic group comprising 1-4 atoms chosen from nitrogen atom, oxygen atom and sulfur atom, or 7-14-membered polycyclic heterocyclic group comprising 1-4 atoms chosen from nitrogen atom, oxygen atom and sulfur atom that can comprises a substitute; R16 represents a cycloalkyl group comprising 3-7 carbon atoms, monocyclic aromatic hydrocarbon group comprising 6-14 carbon atoms, or heterocyclic group chosen from 3-7-membered saturated or 4-7-membered unsaturated monocyclic heterocyclic group comprising 1-4 atoms chosen from nitrogen atom, oxygen atom and sulfur atom that can comprises a substitute; R17 represents a monocyclic aromatic hydrocarbon group comprising 6-14 carbon atoms or heterocyclic group chosen from 4-7-membered saturated monocyclic heterocyclic group comprising 1-4 atoms chosen from nitrogen atom, oxygen atom and sulfur atom that can comprises a substitute; R18 represents hydrogen atom or (C1-C)-alkyl group; X represents -S-, -SO- or -SO2; or N-oxide or S-oxide of this compound; their salt; or solvate of above described compound. Proposed compounds possess the inhibitory activity against producing/secretion of beta-amyloid protein and can be used in treatment of such diseases as Alzheimer's disease, Down's disease and other diseases associated with amyloid deposition. ^ EFFECT: valuable medicinal properties of inhibitors. ^ 7 cl, 1 tbl, 410 ex
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