DERIVATIVES OF CHROMONE, METHOD OF THEIR SYNTHESIS AND PHARMACEUTICAL COMPOSITION

摘要

Chromone derivs. of formula (I) are new: A is opt. monosubstd. by lower alkyl, lower alkoxy, halo, NO2 or F3C; B is opt. substd. by 1-4 lower alkyl, OH, lower alkoxy, lower alkylthio, halo, NO2, CN or F3C.