黄花蒿水提物黄酮苷类成分研究

吴其国; 范明惠; 黄乐怡; 王永丽; 侴桂新

doi:10.16438/j.0513-4870.2022-1340

摘要: 采用HP-20大孔吸附树脂、MCI柱色谱、硅胶柱色谱、中压液相色谱、葡聚糖凝胶Sephadex LH-20柱色谱及制备液相色谱等多种色谱技术, 从黄花蒿水提物的正丁醇部位分离得到21个黄酮苷类化合物。根据化合物的理化性质和波谱数据确定了它们的结构, 分别为甲氧基万寿菊素-7-O-β-D-吡喃木糖-(1→6)-β-D-吡喃葡萄糖苷(1)、荭草苷(2)、芹菜素-6-C-β-D-吡喃葡萄糖-8-C-β-L-吡喃阿拉伯糖苷(3)、芹菜素-6-C-β-D-吡喃半乳糖-8-C-β-L-吡喃阿拉伯糖苷(4)、芹菜素-6-C-β-L-吡喃阿拉伯糖-8-C-β-D-吡喃葡萄糖苷(5)、芹菜素-6-C-α-L-呋喃阿拉伯糖-8-C-β-D-吡喃葡萄糖苷(6)、槲皮素-3-O-β-D-吡喃葡萄糖苷-(1→2)-β-D-吡喃葡萄糖苷(7)、芹菜素-6-C-α-L-吡喃阿拉伯糖-8-C-β-D-吡喃葡萄糖苷(8)、芹菜素-6, 8-二-C-吡喃葡萄糖苷(9)、万寿菊素-7-O-β-D-吡喃葡萄糖苷(10)、木犀草素-6-C-吡喃葡萄糖苷(11)、牡荆素(12)、山柰酚-3-O-β-吡喃半乳糖-(1→2)-β-吡喃葡萄糖苷(13)、槲皮素-7-O-β-D-吡喃葡萄糖苷(14)、万寿菊素-3-O-β-D-吡喃葡萄糖苷(15)、7-甲氧基-栎草亭-6-O-β-D-吡喃葡萄糖苷(16)、槲皮素-3-O-β-D-吡喃葡萄糖苷(17)、假荆芥属苷(18)、芦丁(19)、山柰酚-3-O-β-槐糖苷(20) 和万寿菊素-3-O-β-D-芦丁糖苷(21)。其中, 化合物1为新化合物, 化合物2、4、6、7、10、11、13、15、16、18、20、21为首次从黄花蒿中分离得到。通过ELISA法检测新化合物对LPS诱导的RAW264.7细胞IL-6蛋白表达实验测定了新化合物的抗炎活性, 结果表明化合物1在高(100 μmol·L^-1)、中(50 μmol·L^-1)、低(25 μmol·L^-1) 浓度均能表现出显著抑制IL-6蛋白的生成与表达。

Abstract: Twenty one flavonoid glycosides were isolated and purified from n-butanol portion of the water extract of A. annua by various chromatographic techniques such as HP-20 macroporous adsorption resin, silica gel, ODS, Sephadex LH-20 gel column chromatography and preparative high performance liquid chromatography. Their structures were identified by analysis of physicochemical properties and spectral data, and determined as axillarin-7-O-β-D-xylopyranosyl-(1→6)-β-D-glucopyranoside (1), orientin (2), apigenin-6-C-β-D-glucopyranosyl-8-C-β-L-arabinopyranoside (3), apigenin-6-C-β-D-galactopyranosyl-8-C-β-L-arabinopyranoside (4), apigenin-6-C-β-L-arabinopyranosyl-8-C-β-D-glucopyranoside (5), apigenin-6-C-α-L-arabinofuranosyl-8-C-β-D-glucopyranoside (6), quercetin-3-O-β-D-glucopyranosyl-(1→2)-β-D-glucopyranoside (7), apigenin-6-C-α-L-arabinopyranosyl-8-C-β-D-glucopyranoside (8), vicenin-2 (9), patuletin-7-O-β-D-glucopyranoside (10), luteolin-6-C-glucopyranoside (11), vitexin (12), kaempferol-3-O-β-galactopyranosyl-(1→2)-β-glucopyranoside (13), quercetin-7-O-β-D-glucopyranoside (14), patuletin-3-O-β-D-glucopyranoside (15), 7-O-methyl-quercetagetin-6-O-β-D-glucopyranoside (16), quercetin-3-O-β-D-glucopyranoside (17), nepitrin (18), rutin (19), kaempferol-3-O-β-sophoroside (20), and patuletin-3-O-rutinoside (21). Compound 1 is a new compound, compounds 2, 4, 6, 7, 10, 11, 13, 15, 16, 18, 20 and 21 are isolated from A. annua for the first time. In the anti-inflammatory assay, compound 1 inhibited the release of IL-6 from LPS-induced RAW264.7 cells to significantly degrees with the high (100 μmol·L^-1), medium (50 μmol·L^-1), low (25 μmol·L^-1) concentration.

黄花蒿水提物黄酮苷类成分研究

Flavonoid glycosides from the water extract of Artemisia annua L.