FIELD: chemistry.
SUBSTANCE: invention relates to antifungal compounds based on 3,5,8-trioxabicyclo[5,1,0]octane derivatives, obtained by trans-opening of its epoxide cycle, namely 6-(arylthio)-1,3-dioxepan-5-ols in racemic and enantiopure form of the general formula Ia 
and Ib 
, where at R1=F, R2=H, R3=H; at R1=Br, R2=H, R3=H; at R1=H, R2=Br, R3=H; at R1=H, R2=H, R3=Br.
EFFECT: compounds of formula Ia and Ib possess low toxicity and high antifungal activity with respect to fungi Candida albicans, Aspergillus fumigatus, Epidermophyton floccosum, Mucor pusilos, Saccharomyces cerevisiae and can be applied in medicine and veterinary.
2 tbl, 13 ex
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