[Study on flavonoids in leaves of Apocynum ventum].
OBJECTIVE
To study the flavonoids in the leaves of Apocynum ventum.


METHODS
Compounds were separated by repeated polyacrylamide column chromatgraphy combined with Sephadex LH-20 column chromatgraphy, their structures were confirmed by the analysis of spectral data and physicochemical properties.


RESULTS
Six compounds were isolated from A. ventum. They were elucidated as quercetin (1), kaempferol (2), kaempferol-3-O-(6"-O-acetyl)-beta-D-glucopyranoside (3), quercetin-3-O-(6"-O-acetyl )-beta-D-glucopyranoside (4), quercetin-3-O-(6"-O-acetyl)-beta-D-galactopyranoside (5), kaempferol-7-O-alpha-L-rhamnopyranoside (6).


CONCLUSIONS
Compound 5 and 6 were isolated from the genus Apocynum for the first time.
Li
Li-Hong
LH
Department of Analysis of Traditional Chinese Medicine, School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
Yuan
Zhong
Z
D030010:Apocynum / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D044949:Kaempferols / Q000737:chemistry / Q000302:isolation & purification*; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D011794:Quercetin / Q000737:chemistry / Q000302:isolation & purification
D005419:Flavonoids; D006027:Glycosides; D044949:Kaempferols; C516876:kaempferol-7-O-alpha-L-rhamnopyranoside; C006552:kaempferol; D011794:Quercetin