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[Studies on chemical constituents from leaves of Vaccinium bracteatum]
Zeng-Liang Li1, Lin Zhang, Jing-Kui Tian
1College of Science, Northwest Sci-Tec University of Agriculture and Forestry, Yangling 712100, China.
Objective:
To investigate the chemical constituents from the leaves of Vaccinium bracteatum.
Method:
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.
Result:
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).
Conclusion:
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.
