Abstract: Aim To study the chemical constituents from the stems of Xylosma controversum Clos. Methods The constituents were isolated by solvent extraction, repeated chromatography with silica gel, Sephadex LH-20, and RP-18 columns. The structures were elucidated by spectral analysis. Results Thirteen compounds were isolated and their structures were identified as (-)-syringaresinol (1), syringaresinol-4-O-β-D-glucopyranoside (2), syringaresinol-4,4'-bis-O-β-D-glucopyranoside (3), (±)-catechin (4), catechin-3-O-β-D-glucopyranoside (5), catechin-5-O-β-D-glucopyranoside (6), 1,3-bis-(4-hydroxy-3,5-dimethoxyphenyl)-1,3-propanediol (7), (R)-(+)-chaulmoogric acid (8), friedelin (9), uracile (10), benzoic acid (11), vanillic acid (12), and 4-hydroxybenzoic acid (13). Conclusion All the compounds described above were isolated from this genus for the first time.

Key words: Flacourtiaceae, Flacourtiaceae, Xylosma controversum, Xylosma controversum, Chemical constituents, Chemical constituents