| 摘要 |
FIELD: organic chemistry, chemical technology, medicine. ^ SUBSTANCE: invention relates to a method for synthesis of new compounds, namely, 1,11-dialkyl-3,5-dihydrofuro-[2',3':3,4]-cyclohepta[c]isochromens of the formula: (Ia-f): wherein (Ia): R means hydrogen atom (H); R1 means hydrogen atom (H); (Ib): R means bromine atom (Br); R1 means hydrogen atom (H); (Ic): R means chlorine atom (Cl); R1 means hydrogen atom (H); (Id): R means hydrogen atom (H); R1 means bromine atom (Br): (Ie): R means hydrogen atom (H); R1 means chlorine atom (Cl); (If): R means methoxy-group (-OCH3); R1 means hydrogen atom. Method involves formation of condensed tetracyclic system as result of the successive recyclization reactions of furan ring of derivatives of 2-bis-(5-methyl-2-furylmethyl)phenylmethanol and the secondary cyclization of formed isochromen ketone in boiling of solution containing derivatives of 2-bis-(5-methyl-2-furylmethyl)phenylmethanol of the formula: in ethanol medium in the presence of hydrogen chloride alcoholic solution for 15-40 min. Invention provides synthesis of new derivatives of isochromens possessing the potential anti-inflammatory activity. ^ EFFECT: improved method of synthesis, valuable medicinal properties of compounds. ^ 1 cl, 2 tbl, 5 ex |
