目的 研究油茶Camellia oleifera根的化学成分。方法 利用硅胶、ODS、Sephadex LH-20葡聚糖凝胶柱色谱、高效制备液相色谱等色谱方法进行分离纯化，根据理化常数测定及谱学数据分析鉴定化合物结构。结果 从油茶根中分离得到3个化合物，分别鉴定为3-O-β-D-半乳糖基-（1→2）-[β-D-木糖基-（1→2）-α-L-阿拉伯糖基-（1→3）]-β-D-葡萄糖醛酸基-3β，15α，16α，21β，22α，28-六羟基-21-O-乙酰氧基-22-O-当归酰氧基齐墩果醇-12-烯（1）、大头茶苷J（2）、山茶皂苷B₁（3）。结论 化合物1为新化合物，命名为山茶皂苷Ac，化合物2和3为首次从油茶中分离得到。

Objective To study the chemical constituents from the roots of Camellia oleifera. Methods The chemical constituents were isolated and purified by column chromatography on silica gel, ODS, Sephadex LH-20, and PHPLC. Their structures were elucidated on the basis of physicochemical properties and spectroscopic analysis. Results Three compounds were isolated from the roots of C. oleifera and elucidated as 3-O-β-D-galactopyranosyl-(1→2)-[β-D-xylopyranosyl-(1→2)-α-L-arabinopyranosyl-(1→3)]-β-D-glucuronopyranosyl-3β,15α,16α,21β,22α,28-hexahydroxy-21-O-acetyl-22-O-angeloyloxyolean-12-ene (1), gordonoside J (2), and camelliasaponin B₁ (3). Conclusion Compound 1 is a new compound named camelliasaponin Ac, and compounds 2 and 3 are isolated from the roots of this plant for the first time.

江西省青年科学基金资助项目（20142BAB215062）