[Synthesis of structural fragments of natural flavonoids and flavolignans from 2'-hydroxychalcones].

Structural analogues of natural flavonoids and flavolignans - new 2'-OAc-chalcones and 2-hetaryl-3-aminochromons with the remnants of a 6-halogen-1,3-benzodioxane, 1,4-benzodioxane and 1,5-benzodioxepan were synthesized. Structure of the obtained compounds was confirmed by the 1H NMR data.