Chemical constituents from branches and leaves of Viburnum sargentii
Objective To study the chemical constituents from the branches and leaves of Viburnum sargentii collected at MountainTai.Methods The chemical constituents were isolated and purified by chromatographic methods,including silica gel,ODS,Sephadex LH-20 coltmns,and RP HPLC.The structures of the isolated compounds were identified by ESI-MS,1D-NMR,and 2D-NMR data analyses,and compared with the literature data.Results Thirteen compounds were obtained from the 95％ ethanol extract of branches and the leaves of V.sargentii,and determined as α-amyrin (1),uvaol (2),3α-ursolic acid (3),11,12-dehydroursolic acid lactone (4),3-O-acetyloleanolic aldehyde (5),oleanolic acid (6),betulinic acid (7),magnolin (8),(+)-eudesmin (9),(-)-epieudesmin (10),vibsanol (11),3,4'-dimethoxylvibsanol (12),and α-asarone (13),respectively.Conclusion Compound 12 (3,4'-dimethoxylvibsanol) is a new natural product,and compounds 1-11 and 13 are isolated from V.sargentii for the first time.
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万方数据
维普
