FIELD: medicine. SUBSTANCE: hydroxypyran-2- ones of formula I R1 wherein R2 is H; C3-5 is (CH2)2 alkyl, phenyl- -SO2NH-(CH2)2, het--(CH2)2, cyclopropyl--(CH2)2, fluorophenyl--SO2NH-, het-(CH2)2- phenyl, trifluoromethyl-R1 and R2, or R3 together form double bond; R4 is fragment of formula (A), -SO2NH- is phenyl, het, cyclopropyl, bromine; azido, het-
and derivatives thereof are useful for suppressing retrovirus in human cells infected by said retrovirus. EFFECT: improved properties of title compounds. 40 cl, 119 dwg, 380 ex, 3 tbl
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