[Studies on the chemical constituents of the flowers of Bupleurum chinese].
OBJECTIVE
To study the chemical constituents of the flowers of Bupleurum chinese.


METHODS
The compounds were separated by column chromatography with silica gel. Their structures were identified by spectral methods and chemical analysis.


RESULTS
Five compounds were isolated and identified as 8-(3',6'-dimethoxy)-4,5-cyclohexadiene-(delta11,12-dioxide-methylene) -dense-dihydrogen-isocoumarin(I), quercetin(II), rutin(III), calcifenol (IV), isorhamnetin (V).


CONCLUSIONS
Compounds I and IV are obtained from the genus for the first time. Compound I is a new compound.
College of Chemistry & Chemical Engineering, Luoyang Normal University, Luoyang 471022, China. zhangli0088@163.com
Li
L
Zhang
Yu-Xin
YX
He
Jing-Cai
JC
Yao
Wei-Ping
WP
Yin
D029972:Bupleurum / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D004872:Ergocalciferols / Q000737:chemistry / Q000302:isolation & purification*; D044948:Flavonols / Q000737:chemistry / Q000302:isolation & purification; D035264:Flowers / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry; D011794:Quercetin / Q000737:chemistry / Q000302:isolation & purification* / Q000031:analogs & derivatives; D012431:Rutin / Q000737:chemistry / Q000302:isolation & purification
D004365:Drugs, Chinese Herbal; D004872:Ergocalciferols; D044948:Flavonols; C047368:3-methylquercetin; D012431:Rutin; D011794:Quercetin