FIELD: organic chemistry.
SUBSTANCE: invention relates to organic chemistry, particularly to a method of producing a compound of general formula: 
, where R is selected from: 
, 
, 
, 
, 
. Method is carried out by treating 5,8-dimethoxy-6,7-methylenedioxycoumarin of formula A with lead tetraacetate, and then with excess HCl/iPrOH, followed by catalytic hydrogenation of the obtained dihydroxycoumarin of formula B in a hydrogen atmosphere to obtain 6,7-dihydroxy-5,8-dimethoxychroman-2-one (C), according to the scheme:
Hydrolysis of the compound of formula C is then carried out, followed by oxidation of air with oxygen and obtaining 5,8-dimethoxy-6,7-methylenedioxycoumarin derivatives.
EFFECT: synthesis of 5,8-dimethoxy-6,7-methylenedioxycoumarin derivatives exhibiting antiradical activity.
6 cl, 2 dwg, 1 tbl, 9 ex
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