Shokol, TatyanaTatyanaShokolGorbulenko, NataliaNataliaGorbulenkoKhilya, VolodymyrVolodymyrKhilya2026-06-262026-06-262019Shokol, T., Gorbulenko, N., Khilya, V. (2019). Synthesis of chromones, annulated with oxygen-containing heterocycles with two hetero atoms at C(7)-C(8) bond. French-Ukrainian Journal of Chemistry, 7(1), 121–139. https://doi.org/10.17721/fujcV7I1P121-1392310.17721/fujcV7I1P121-139https://ir.library.knu.ua/handle/15071834/25479The present review represented the advanced synthetic strategies for chromones annulated at the C(7)-C(8) bond with five-membered, six-membered, and seven-membered oxygen-containing heterocycles with two heteroatoms, such as 6H-[1,3]dioxolo[4,5-h]chromen-6-one, 2,3-dihydro-7H-[1,4]dioxino[2,3-h]chromen-7-one, 3,4-dihydro-2H,8H-[1,4]dioxepino[2,3-h]chromen-8-one, 2,3-dihydro-1H,7H-chromeno[7,8-b][1,4]oxazin-7-one, 4H,12H-pyrano[2,3-a]phenoxazine-4-one and 9,10-dihydro-4H,8H-chromeno[8,7-e][1,3]oxazin-4-one. The biological activity of naturally occurring and modified synthetic fused hetarenochromones has been also highlighted.enannulationchromones6H-[13]dioxolo[45-h]chromen-6-one3-dihydro-7H-[14]dioxino[23-h]chromen-7-one4-dihydro-2H8H-[14]dioxepino[23-h]chromen-8-one3-dihydro-1H7H-chromeno[78-b][14]oxazin-7-one4H12H-pyrano[23-a]phenoxazine-4-oneСтаття