FIELD: chemistry.
SUBSTANCE: invention relates to compounds of formula 
, where X represents a halogen atom, a hydroxyl group or a sulphamoyloxy group, which is substituted with two alkyl groups containing 1-10 carbon atoms; and Y represents -C(=O)R, where R represents a straight, branched or cyclic alkoxy group containing 1-10 carbon atoms, which can be substituted with an aryl group containing 6-10 carbon atoms; a pyrrolidino group or an amino group, which can be substituted with one or two alkyl groups containing 1-10 carbon atoms, which can be substituted with an aryl group containing 6-10 carbon atoms. The invention also relates to methods of obtaining special cases of compounds of formula (I), methods of producing compounds of formulae
and 
from compounds of formula (I), to intermediate compounds of formulae
, 
and 
for producing compounds of formula (I).
EFFECT: derivatives as intermediate compounds for producing 6-fluoro-3-hydroxy-2-pyrazine carboxamide, which is suitable for treating and preventing influenza virus.
15 cl, 54 ex
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