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[摘要]
目的 研究三尖杉Cephalotaxus fortunei的化学成分。方法 采用薄层色谱、正相硅胶柱色谱、ODS反相柱色谱、HP20大孔树脂及Sephadex LH-20凝胶柱色谱、高效液相制备色谱等分离技术进行分离,运用1H-NMR、13C-NMR、ESI-MS等多种波谱技术鉴定化合物的结构。结果 从三尖杉的乙醇提取物中分离得到了17个木脂素类化合物,分别鉴定为shonanin(1)、牛蒡子苷元(2)、α-铁杉脂素(3)、罗汉松脂酚(4)、去甲络石苷元(5)、表去甲络石苷元(6)、(7'S)-羟罗汉脂素(7)、(7'R)-羟罗汉脂素(8)、(7'S)-hydroxyarctigenin(9)、开环异落叶松树脂酚(10)、4,4'-di-O-methylcephafortinA(11)、5-(3'',4''-二甲氧基苯基)-3-羟基-3-(4'-羟基-3'-甲氧基苄基)-4-羟甲基二氢呋喃-2-酮(12)、cephafortin B(13)、二氢去氢二愈创木基醇(14)、7R,8S-4,7,9,9'-四羟基-3,3'-二甲氧基-8-O-4'-新木脂素(15)、7R,8R-4,7,9,9'-四羟基-3,3'-二甲氧基-8-O-4'-新木脂素(16)、threo-1,2-双(4-羟基-3-甲氧基苯基)-1,3-丙二醇(17)。结论 化合物3、6、10、17为首次从三尖杉属植物中分离得到,4、5、7~9、12、14为首次从三尖杉中分离得到。
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[Abstract]
Objective To study chemical constituents of Cephalotaxus fortunei. Methods The chemical constituents were separated and purified by preparative thin-layer chromatography, silica gel, ODS, HP20 macroporous resin and Sephadex LH-20 gel column chromatography, and semi-preparative HPLC. Their structures were determined by NMR and ESI-MS spectroscopic techniques. Results Seventeen lignans were isolated from the ethanol extracts of C. fortunei and their structures were identified as shonanin (1), arctigenin (2), α-conidendrin (3), matairesinol (4), nortrachelogenin (5), epinortrachelogenin (6), (7'S)-hydroxymatairesinol (7), (7'R)-hydroxymatairesanol (8), (7'S)-hydroxyarctigenin (9), secoisolariciresinol (10), 4,4'-di-O-methylcephafortin A (11), 5-(3'',4''-dimethoxyphenyl)-3-hydroxy-3-(4'-hydroxy-3'-methoxybenzyl)-4-hydroxymethyl-dihydrofuran-2-one (12), cephafortin B (13), dihydrodehydrodiconiferyl alcohol (14), 7R,8S-4,7,9,9'-tetrahydroxy-3,3'-dimethoxy-8-O-4'-neolignan (15), 7R,8R-4,7,9,9'-tetrahydroxy-3,3'-dimethoxy-8-O-4'-neolignan (16), and threo-1,2-bis-(4-hydroxy-3-methoxyphenyl)-1,3-propanediol (17). Conclusion Compounds 3, 6, 10 and 17 were isolated from genus Cephalotaxus for the first time, and compounds 4, 5, 7-9, 12 and 14 were isolated from C. fortunei for the first time.
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