[Chemical Constituents from Drypetes hainanensis Stems and Leaves].

OBJECTIVE: To study the chemical constituents from the stems and leaves in Drypetes hainanensis. METHODS: The constituents were isolated and purified by various chromatography, and the structures were identified by extensive spectral analysis. RESULTS: Eleven compounds were isolated and identified as syringaresinol-4-O-glycoside (1), koaburaside (2), abietin (3) syringin (4), kelampayoside A (5), 7,7'-bis-(4-hydroxy-3,5-dimethoxyphenyl)-8,8'-dihydroxymethyl-tetrahydrofuran-4-O-ß-glucopyranoside (6), amentoflavone (7), 3,4,5-trimethoxyphenyl-ß-D-glucopyranoside (8),1,4-di-O-methyl-myo-inositol (9), glycerol (10) and succinic acid (11). CONCLUSION: All the compounds are isolated from this plant for the first time.