目的 研究桃金娘Rhodomyrtus tomentosa果实的化学成分。方法 采用硅胶柱色谱、SephadexLH-20凝胶柱色谱及半制备高效液相色谱法进行分离纯化，采用NMR和MS等波谱学方法鉴定单体化合物的结构。结果 从桃金娘果实95%乙醇提取物的醋酸乙酯萃取部位分离得到9个化合物，分别鉴定为桃金娘酚A（1）、piceatannol 4'-O-（6″-O-galloyl）-β-D-glucopyranoside（2）、白皮杉醇（3）、piceatannol glucoside（4）、scirpusin B（5）、杨梅素（6）、杨梅苷（7）、杨梅素-3-O-α-L-呋喃阿拉伯糖苷（8）、没食子酸（9）结论 化合物1为新化合物，化合物2、5为首次从该植物中分离得到。

Objective To study on the chemical constituents from the fruit of Taojinniang (Rhodomyrtus tomentosa). Methods The chemical constituents were separated and purified by Sephadex LH-20, silica gel, semi-prepared HPLC, and other chromatography techniques. Their structures were elucidated by their physicochemical properties and NMR data. Results Nine compounds (1-9) were isolated, and were identified as tomentosene A (1), piceatannol 4'-O-(6″-O-galloyl)-β-D-glucopyranoside (2), piceatannol (3), piceatannol glucoside (4), scirpusin B (5), myricetin (6), myricitrin (7), myricetin-3-O-α-L-furanoarabinoside (8), and gallic acid (9). Conclusion Compound 1 is a new compound, Compounds 2 and 5 are isolated from this plant for the first time.

R284.1

天津市教委科研计划项目（2019ZD031）；泉州市科技计划项目（2018N111S）