[Studies on chemical constituents from leaves of Vaccinium bracteatum].
OBJECTIVE
To investigate the chemical constituents from the leaves of Vaccinium bracteatum.


METHODS
Many column chromatographic techniques were used for the isolation and separation of chemical constituents. Their structures were elucidated on the basis of spectral analysis and chemical evidences.


RESULTS
Twelve compounds were isolated from the plant, and they were identified as chrysoeriol (1), scopoletin (2), trans-p-hydroxycinnamic acid (3), trans-p-hydroxycinnamic acid ethyl ester (4), cafeic acid ethyl ester (5), beta-sitosterol (6), iuteolin (7), quercetin (8), esculetin (9), cafeic acid (10), isolariciresinol-9-O-beta-D-xyloside (11), 10-O-trans-p-coumaroylsandoside (12).


CONCLUSIONS
Compounds 4, 5, 11, 12 were isolated from the genus Vaccinium for the first time, and compounds 1, 2, 9, 10 were isolated from this plant for the first time.
Li
Zeng-Liang
ZL
College of Science, Northwest Sci-Tec University of Agriculture and Forestry, Yangling 712100, China.
Zhang
Lin
L
Tian
Jing-Kui
JK
Zhou
Wen-Ming
WM
D003373:Coumaric Acids / Q000737:chemistry; D047309:Flavones; D005419:Flavonoids / Q000737:chemistry; D005663:Furans / Q000737:chemistry; D006027:Glycosides / Q000737:chemistry; D008031:Lignin / Q000737:chemistry; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry*; D012603:Scopoletin / Q000737:chemistry; D012855:Sitosterols / Q000737:chemistry; D014468:Umbelliferones / Q000737:chemistry; D029796:Vaccinium / Q000737:chemistry*
D003373:Coumaric Acids; D047309:Flavones; D005419:Flavonoids; D005663:Furans; D006027:Glycosides; D012855:Sitosterols; D014468:Umbelliferones; C540484:isolariciresinol-9-O-beta-D-xyloside; C025473:gamma-sitosterol; D008031:Lignin; D012603:Scopoletin; C007054:chrysoeriol; C007628:esculetin