3-Aryl-4H-coumarins with the 1,3-benzodioxol, 1,4-benzodioxane, and 1,5-benzodioxepane moieties were synthesized by modified methods. The English version of the paper: Russian Journal of Bioorganic Chemistry, 2005, vol. 31, no. 3; see also http://www.maik.ru.

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.

The synthesis of substituted and unsubstituted 3-phenoxycoumarins is described.

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