- 作者: --
- 作者服務機構: Maseno University, Chemistry Department, Private Bag, Maseno, Kenya
- 中文摘要: Five new flavonol glycosides characterized as syringetin 3-O-a-rhamnoside-7-O-b-glucoside, syringetin 3-O-a-rhamnoside-7,4¢-di-O-b-glucoside, quercetin-7-O-b-galactosyl (1R3)-b-galactoside, myricetin 3-O-a-rhamnosyl (1R4)-b-galactoside and myricetin 3-O-b-glucosyl (1R2)-b-glucoside-7-O-b-glucosyl(1R4)-a-rhamnoside have been isolated from a methanolic extract of Embelia keniensis leaves. Known flavonols isolated from the same extract included myricetin, quercetin, kaempferol, myricetin 3-O-a-rhamnoside, myricetin 3-O-b-glucoside, quercetin 3-O-a-rhamnoside, quercetin 3-O-b-glucoside, quercetin 3-O-b-xyloside, isorhamnetin 3-O-a-rhamnoside and myricetin 3-O-rutinoside. Their structures were established from extensive spectroscopic and chemical studies and by comparison with authentic samples.
- 英文摘要: --
- 中文關鍵字: Embelia keniensis; Myrsinaceae; Flavonol glycosides.
- 英文關鍵字: --