[Studies on flavonoids from Blumea riparia].
OBJECTIVE
To separate and identify the chemical constituents of Blumea riparia.


METHODS
The compounds were separated and purified by repeated silica gel, Sephadex LH -20 column chromatographiy. The structures of these compounds isolated were identified by analysis of their spectral data, physical and chemical properties.


RESULTS
Six flavonoids were isolated from B. riparia. and their structures were identified as eriodictyol-7, 4'-dimethyl ether (1), eriodictyol-7, 3'-dimethyl ether (2), eriodictyol-7-methyl ether (3), quercetin-7, 3', 4'-trimethyl ether (4), tamarixetin (5), rhamnocitrin (6).


CONCLUSIONS
Compound 1-6 were obtained from B. riparia for the first time.
Cao
Jia-Qing
JQ
School of Traditional Chinese Material Medica, Shenyang Pharmaceutical University, Shenyang 110016, China.
Sun
Shu-Wei
SW
Chen
Huan
H
Wang
Ya-Nan
YN
Pei
Yue-Hu
YH
D019659:Asteraceae / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D005419:Flavonoids / Q000032:analysis* / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy
D004365:Drugs, Chinese Herbal; D005419:Flavonoids