Compounds of the benzopyran series exhibit a broad spectrum of biological effects, including cardiovascular, membranotropic, psychotropic, immunostimulating, and antioxidant activity [I-6]. There were a few communications devoted to the antiviral and antimicrobial activity of benzopyran-2-one derivatives, but these data showed no prospects for this search [7, 8]. However, our investigations led to some new compounds of the ...