Перегляд за Автор "Bondarenko, Nataliia"
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Документ Synthesis of pyrazole-containing xyloketal-like compounds(2018) Mrug, Galyna; Bondarenko, Nataliia; Bondarenko, Svetlana; Frasinyuk, MihayloUnique metabolites named xyloketal A – H which containing fused bezopyran and furan rings with acetal function were Isolated from mangrove fungus Xylaria sp.The biosynthesis and chemical syntheses of these and related compounds are based on inverse-electron-demand Diels-Alder reaction. We developed synthesis of pyrazole derivatives of 2,3,3a,9a-tetrahydro-4H-furo[2,3- b]chromene heterocyclic system which presents in natural acetals. Interaction of thermally generated ortho-quinone methides from isoflavone Mannich bases with 2,3- dihydrofuran or 3,4-dihydro-2H-pyran led to formation fused acetals. Selective cleavage of pyranone ring compounds by hydrazine treatment led to the formation of xylokeketal-like–pyrazole hybridsДокумент Unusual Reaction of 3-(2-Hydroxyphenyl) enaminoketones with Phenolic Mannich Bases(2017) Bondarenko, Nataliia; Voitenko, Zoya; Bondarenko, Svetlana; Frasinyuk, Mihaylo