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[摘要]
目的 研究两色金鸡菊Coreopsis tinctoria头状花序的水提取物化学成分。方法 采用常规硅胶、反相ODS及半制备高效液相色谱等进行分离制备,利用各种谱学技术鉴定化合物结构。结果 从两色金鸡菊头状花序的水提物中分离得到13个化合物。依据其波谱数据和理化性质,分别鉴定为8,3',4'-trihydroxyflavone-7-O-β-D-glucopyranoside(1)、6-hydroxyluteolin- 7-O-β-D-glucoside(2)、山柰酚(3)、槲皮素-7-O-β-D-葡萄糖苷(4)、(2S)-3',4',5,8-tetrahydroxyflavanone-7-O-β-D-glucoside(5)、(2S)-eriodictyol-5-O-β-D-glucoside(6)、紫铆黄素-7-O-β-D-吡喃葡萄糖苷(7)、plathymenin(8)、(Z)-6-O-β-D- glucopyranosyl-6,3',4'-trihydroxyaurone(9)、5,6,3',4'-tetrahydroxyaurone(10)、6,3',4'-trihydroxyaurone(11)、奥卡宁-5'-O-β-D-葡萄糖苷(12)和4'-O-β-D-glucopyranosyl-3,4,2',4',5'-pentahydroxychalcon(13)。结论 13个化合物均为首次从该植物中分离得到。
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[Abstract]
Objective To study the chemical constituents of the water extract of capitula of Coreopsis tinctoria. Methods The chemical constituents from water extract were isolated and prepared by silica gel column, reversed-phase ODS, and pre-HPLC, and their structures were identified according to the physical and chemical properties and spectral data. Results A total of 13 compounds were isolated and identified as 8,3',4'-trihydroxyflavone-7-O-β-D-glucopyranoside (1), 6-Hydroxyluteolin-7-O-β-D-glucoside (2), kaempferol (3), quercetin-7-O-β-D-glucopyranoside (4), (2S)-3',4',5,8-tetrahydroxyflavanone-7-O-β-D-glucoside (5), (2S)- eriodictyol-5-O-β-D-glucoside (6), butin-7-O-β-D-glucopyranoside (7), plathymenin (8), (Z)-6-O-β-D-glucopyranosyl-6,3',4'- trihydroxyaurone (9), 5,6,3',4'-tetrahydroxyaurone (10), 6,3',4'-trihydroxyaurone (11), okanin-5'-O-β-D-glucopyranoside (12), and 4'-O-β-D- glucopyranosyl-3,4,2',4',5'-pentahydroxychalcon (13). Conclusion Thirteen compounds are isolated from C. tinctoria for the first time.
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