C-glycosylflavones with acetyl substitution from Rumex acetosa L.
作者:Takeshi KATO、Yutaka MORITA
DOI:10.1248/cpb.38.2277
日期:——
Six flavone C-glycosides : 2", 6"-di-O-acetylisoorientin (1), 2", 6"-di-O-acetylorientin (2), 2"-O-acetylisoorientin (3), 2"-O-acetylorientin (4), isoorientin (5) and orientin (6) were identified from the aerial parts of Rumex acetosa L .(Polygonaceae), in addition to two flavonol O-glycosides : avicularin (7) and hyperin (8). Of these, 1-3 were new compounds and 4-7 were isolated for the first time from this species. The structures were established by ultraviolet, fast atom bombardment mass and nuclear magnetic resonance spectral data.