酸模叶蓼化学成分的研究

摘要

目的 研究酸模叶蓼Polygonum lapathifolium L.的化学成分.方法 酸模叶蓼80％乙醇提取物的乙酸乙酯部位采用硅胶、Sephadex LH-20、ODS进行分离纯化,根据理化性质及波谱数据鉴定所得化合物的结构.结果 从中分离得到15个化合物,分别鉴定为2',4'-二羟基-6'-甲氧基查耳酮(1)、2',6'-二羟基-4'-甲氧基查耳酮(2)、2',3'-二羟基-4',6'-二甲氧基查耳酮(3)、3-甲氧基槲皮素(4)、山柰酚(5)、槲皮素(6)、槲皮素-3-O-α-L-鼠李糖苷(7)、山柰酚3-O-α-L-鼠李糖苷(8)、山柰酚3-0-β-D-葡萄糖苷(9)、槲皮素-3-O-β-D-半乳糖苷(10)、槲皮素-3-0-β-D-葡萄糖苷(11)、山柰酚-3-O-β-D-半乳糖苷(12)、槲皮素-3-O-(2"没食子酰基)-鼠李糖苷(13)、槲皮素-3-0-(2"-O-没食子酰基)-β-D-葡萄糖苷(14)、槲皮素-3-0-(6"-O-反式阿魏酰基)-β-D-半乳糖苷(15).结论 化合物3～8均为首次从该种植物中分离得到.%AIM To study the chemical constituents from Polygonum lapathifolium L..METHODS The ethyl acetate fraction of 80％ ethanol extract of P.lapathifolium L.was isolated and purified by silica column,Sephadex LH-20 and ODS,then the structures of obtained compounds were identified by physicochemical properties and spectral data.RESULTS Fifteen compounds were isolated and identified as 2',4'-di-hydroxy-6'-mehtoxy-chaltone (1),2',6'-di-hydroxy-4'-methoxy-chaltone (2),2',3'-di-hydroxy-4',6'-di-methoxy-chaltone (3),kaempferol (4),quercetin (5),quercetin-3-O-α-L-rhamnoside (6),quercetin-3-O-α-L-rhamnoside (7),kaempferol-3-O-α-L-rhamnoside (8),kaempferol-3-O-β-D-glucoside (9),quercetin-3-O-β-D-galactoside (10),quercetin-3-O-β-D-glucoside (11),kaempferol-3-O-β-D-galactoside (12),quercetin-3-O-(2"-O-galloyl)-rhamnoside (13),quercetin-3-O-(2"-O-galloyl)-glucoside (14),quercetin-3-O-[(6"-O-transferuloyl)-β-D-galactoside] (15).CONCLUSION Compound 3-8 are isolated from this plant for the first time.