FIELD: chemistry.
SUBSTANCE: invention relates to novel compounds of formula 
(I), where each R1, R2 and R3 is independently selected from a group comprising H, OH, F, Cl, Br, a methoxy group and an ethoxy group; or R1 and R2 together form -OCH2O-, and R3 is selected from a group comprising H, OH, methoxy group, ethoxy group and halogens; R4 denotes OH or o-acetoxybenzoyloxy nicotinoyloxy or iso-nicotinoyloxy; R5 denotes 
or 
, and at least one of R1, R2 and R3 is not hydrogen.
EFFECT: method for synthesis of a compound of formula (I) and use of the compound of formula (I) in preparing medicinal agents for preventing or treating cerebrovascular diseases.
17 cl, 14 tbl, 5 dwg, 12 ex
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