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作 者:王威[1] 李红岩[1] 王艳艳[1] 夏雪[1] 岡田嘉仁 奥山徹
机构地区:[1]吉林省中医药科学院,吉林长春130021 [2]明治药科大学
出 处:《中草药》2008年第5期657-661,共5页Chinese Traditional and Herbal Drugs
基 金:吉林省中医药管理局科技项目(2004-056)
摘 要:目的研究褐藻羊栖菜Sargassum fusiforme的化学成分。方法采用硅胶柱色谱、ODS柱色谱和制备液相色谱进行分离,根据理化性质和波谱数据鉴定结构。结果从羊栖菜乙醇提取物正己烷部位中分离得到6个甾醇类化合物和2个糖脂类化合物,分别鉴定为岩藻甾醇(Ⅰ)、24R,28R-和24S,28S-环氧-24-乙基胆甾醇(Ⅱ)、24-氢过氧基-24-乙烯基胆甾醇(Ⅲ)、29-氢过氧基豆甾-5,24(28)-二烯-3β-醇(Ⅳ)、(24S)-5,28-豆甾二烯-3β,24-二醇(Ⅴ)、(24R)-5,28-豆甾二烯-3β,24-二醇(Ⅵ)、1-O-十四碳酰基-3-O-(6′-硫代-α-D-脱氧吡喃葡萄糖基)甘油(Ⅶ)、1-O-十六碳酰基-3-O-(6′-硫代-α-D-脱氧吡喃葡萄糖基)甘油(Ⅷ )。结论化合物Ⅳ、Ⅶ和Ⅷ为首次从马尾藻属海藻中分离得到,化合物Ⅱ和Ⅲ为首次从羊栖菜中分离得到;首次利用正相制备液相色谱技术从羊栖菜中分离得到马尾藻甾醇的24S(Ⅴ)和24R(Ⅵ)异构体。Objective To study the chemical constituents of brown alga Sargassum fusiforme. Methods The compounds were isolated by silica gel chromatography, ODS chromatography, and preparative HPLC, and their structures were elucidated on the basis of chemical and spectroscopic methods, including HR EI-MS, 1D and 2D NMR spectral techniques. Results Six sterols and two glycolipids were isolated from the n-hexane soluble part of ethanol extract of S. fusiforme and their structures were identified as fucosterol ( Ⅰ ), 24R, 28R- and 24S, 28S-epoxy-24-ethylcholesterol (Ⅱ), 24-hydroperoxy-24-vinylcholesterol (Ⅲ), 29-hydroperoxystigmasta-5, 24(28)-dien-3β-ol (Ⅳ), (24S)-5, 28-stigmastadien-3β, 24-diol ( Ⅴ ), (24R)-5, 28-stigmastadien-3β, 24-diol ( Ⅵ ), l-O-myristoyl-3-O-(6′-sulfo-α-D-quinovopyranosyl) glycerol ( Ⅶ), and l-O-palmitoyl-3-O-(6′-sulfo-α-D-quinovopyranosyl) glycerol (Ⅷ). Conclusion This is the first report for the isolation of Ⅳ,Ⅶ, and Ⅷ from alga of Sargassum (Turn.) Ag. , and compounds Ⅱ and Ⅲ from this alga. The isomers of saringosterols 24S ( Ⅴ ) and 24R (Ⅵ) from this alga are obtained by preparative normal-phase HPLC for the first time.
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