云南金叶子叶的化学成分研究

Chemical constituents from leaves of Craibiodendron yunnanense

研究云南金叶子Craibiodendron yunnanense叶的化学成分。通过聚酰胺、正相硅胶、Sephadex LH-20以及反相HPLC等柱色谱对云南金叶子叶的化学成分进行分离纯化,应用谱学技术鉴定化合物的结构。从云南金叶子叶中分离鉴定了10个化合物,分别鉴定为melionoside F(1)、meliosmaionol D(2)、柚皮素(3)、槲皮素-3-O-α-L-阿拉伯吡喃糖苷(4)、表儿茶素(5)、槲皮素-3′-葡萄糖苷(6)、corbulain Ib(7)、黑麦草内酯(8)、积雪草酸(9)、熊果酸(10)。其中化合物1和2为新化合物。化合物7为首次从该属植物中分离得到。采用MTT法检测了化合物的体外细胞毒活性,结果显示化合物1~10均无明显的细胞毒活性。

The present study investigated the chemical constituents from the leaves of Craibiodendron yunnanense. The compounds were isolated and purified from the leaves of C. yunnanense by a combination of various chromatographic techniques including column chromatography over polyamide, silica gel, Sephadex LH-20, and reversed-phase HPLC. Their structures were identified by extensive spectroscopic analyses including MS and NMR data. As a result, 10 compounds, including melionoside F(1), meliosmaionol D(2), naringenin(3), quercetin-3-O-α-L-arabinopyranoside(4), epicatechin(5), quercetin-3′-glucoside(6), corbulain Ib(7), loliolide(8), asiatic acid(9), and ursolic acid(10), were isolated. Compounds 1 and 2 were two new compounds, and compound 7 was isolated from this genus for the first time. All compounds showed no significant cytotoxic activity by MTT assay.