目的研究毛冬青Hex pubescens叶的化学成分。方法采用正相硅胶、反相ODS、Sephadex LH-20等柱色谱及半制备高效液相色谱法进行分离纯化,并通过理化性质与光谱分析法鉴定化合物的结构。结果从毛冬青叶70%乙醇提取物中分离鉴定了16个化合物,分别为大豆苷元(1)、染料木苷(2)、山奈酚.3-O-β-龙胆二糖苷(3)、山柰酚.3.D.B.刺槐双糖苷(4)、山柰酚-3-O-β-半乳糖苷(5)、槲皮素-3-O-β-龙胆二糖苷(6)、3β,19a-二羟基齐墩果-12-烯-24,28-二酸-28-O-β-D.吡喃葡萄糖苷(7)、毛冬青皂苷Al(8)、毛冬青素A(9)、2-羟甲基.3.咖啡酰氧.1.丁烯.4.D.B_D.毗喃葡萄糖苷(10)、2.咖啡酰甲基.3.羟基.1.丁烯.4.O—B国.吡喃葡萄糖苷(11)、3,4-O-二咖啡酰基奎宁酸(12)、3,5-O-咖啡酰基奎宁酸(13)、1,5-O二咖啡酰基奎宁酸(14)、4,5-O-二咖啡酰基奎宁酸(15)、2-苯乙基-O-a-L-阿拉伯糖基(1—6)-O-β-D-吡喃葡萄糖苷(16)。结论化合物1~6、12~16为首次从该植物中分离得到。
Objective To study the chemical constituents from the leaves of flex pubescens. Methods The chemical constituents from the leaves of I. pubescens were isolated and purified by silica column chromatography, ODS, Sephadex LH-20 colunm chromatography, and semi-preparation HPLC. Their structures were elucidated by chemical and spectral analyses. Results Sixteen compounds were obtained from 70% ethanol extract and identified as daidzein (1), genistin (2), kaempferol-3-O-β-gantiobioside (3), kacmpferol-3-O-β-robinobinoside (4), kaempferol-3-O-β-galactopyranoside (5), quercetin-3-O-β-gentiobioside (6), 313, 19ct-dihydroxyolean-12-ene-24, 28-dioic-28-O-[3-D-glucopyranoisde (7), ilexsaponin A1 (8), ilcxgenin A (9), 2-hydroxymethyl-3-caffeoyloxyl- 1-butene-4-O-β-D-glucopyranoside (10), 2-caffeoyloxymethyl-3-hydroxyl-l-butene-4-O-β-D-glucopyranoside (11), 3, 4-O-diocaffeoyl- quinic acid (12), 3, 5-O-diocaffeoylquinic acid (13), 1, 5-O-diocaffeoylquinic acid (14), 4, 5-O-diocaffeoylquinic acid (15), and 2-phenylethyl- O-a-L-arabinopyranosyl (1→6)-O-β-D-glucopyranoside (16). Conclusion Compounds 1-6 and 12-16 are isolated from this plant for the first time.