目的 研究余甘子根的化學成分。方法 采用各種色譜技術分離純化，用MS、IR、NMR等譜學技術分析確定化合物結構。結果 從余甘子根部95%乙醇提取物分離得到7個化合物。分別鑒定為3, 20-二氧代二降木栓烷（1）、羽扇豆醇（2）、β-谷甾醇（3）、豆甾醇（4）、胡蘿卜苷（5）、4-O-甲基鞣花酸-3′-α-鼠李糖苷（6）、余甘酸（7）。結論 其中化合物1為新化合物，命名為余甘酮A，化合物2～6為首次從余甘子根部分離得到。

Abstract: Objective To study the chemical constituents from the roots of Phyllanthus emblica. Methods Compounds were isolated by various column chromatographies and elucidated by spectral analyses such as MS, IR, and NMR. Results Seven compounds were isolated in the 95% ethanol extract from the roots of P. emblica and their structures were identified as 3, 20-dioxo-dinorfriedelane (1), lupeol (2), β-sitosterol (3), stigmasterol (4), daucosterol (5), 4-O-methylellagic acid-3′-α-rhamnoside (6), and phyllaemblic acid (7). Conclusion Compound 1 is a new compound named phyllaemblicone A and compounds 2—6 are first isolated from the roots of P. emblica.

國家自然科學基金資助項目（21310104）；廣東省自然科學基金項目（32210018）