[Chemical constituents of flavonoids from Apocynum venetum].Zhong Yao Cai. 2007 Sep; 30(9):1086-8.ZY
To study the chemical constituents of flavonoids from Apocynum venetum L.
The compounds from water extracts were isolated by HPD-100 MCI-gel, polyamide, silica and Sephadex LH-20. Their structrues were characterized by chemical methods and spectroscopic methods.
The five compounds were identified to be trifolin (I), hyperroside (III), hyperin (V), isoquercetin-6'-o-acetate (VII) and isoquercetin (VIII).
Compound I and compound VII are isolated from Apocynum venetum L. for the first time.