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[Study on the Chemical Constituents of Litchi chinensis Pericarp( Ⅱ)]
Objective:
To study the chemical constituents of Litchi chinensis pericarp.
Methods:
The compounds were isolated by Sephadex LH-20, MCI gel CHP 20 P, Toyopearl Butly-650 C, Toyopearl WH-40 F column chromatographies and semi-preparative HPLC, the structures were elucidated by NMR and mass spectroscopic MS data analysis.
Results:
14 compounds were obtained and their structures were identified as quercetin( 1), chrysoeriol( 2),kaemperol-3-O-β-D-glucoside( 3), manghaslin( 4), isorhamnetin-3-O-robinobioside( 5), ( +)-gallocatechin( 6), (-) epicatechin-3-O-gallate( 7), cinnamtannin B-1( 8), isolariciresinol-9-O-β-D-xyloside( 9), ( +)-5-methoxyisolariciresinol-9-O-β-D-xylopyranoside( 10), vanillic acid( 11), 3, 4, 3’, 4’-tetrahydroxy biphenyl( 12), tachioside( 13) and isotachioside( 14).
Conclusion:
Compounds 1 ~ 7,9 ~ 14 are obtained from this plant pericarp for the first time.
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