目的 研究油茶茎的化学成分。方法 利用硅胶、ODS、SephadexLH-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，根据理化性质及波谱数据鉴定化合物结构。结果 从油茶茎中分离得到3个化合物，分别鉴定为3-O-β-D-半乳糖基-（1→2）-[β-D-半乳糖基-（1→2）-β-D-木糖基-（1→3）]-β-D-葡萄糖醛酸基-3β,15α,16α,22α,28-五羟基-22-O-当归酰基-齐墩果-12-烯（1）、camelliasaponin B₂（2）、gordonsaponin H（3）。结论 化合物1为新化合物，命名为油茶皂苷Aa，化合物2和3为首次从油茶茎中分离得到。

Objective To study the chemical constituents of the stem 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 special analysis. Results Three compounds were isolated from the stem of C. oleifera and elucidated as 3-O-β-D-galactopyranosyl-(1→2)-[β-D-galactopyranosyl-(1→2)-β-D-xylopyranosyl-(1→3)]-β-D-glucuronopyranosyl-3β, 15α, 16α, 22α, 28-pentol-22-O-angeloyloxy-olean-12-ene (1), camelliasaponin B₂ (2), gordonsaponin H (3). Conclusion Compound 1 was a new compound, and compounds 2 and 3 were isolated from the stem of this plant for the first time.

江西省青年科学基金（20142BAB215062）