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[摘要]
目的 研究匙叶八角Illicium spathulatum枝叶的化学成分。方法 匙叶八角枝叶的甲醇提取物经醋酸乙酯和正丁醇萃取部分经过反复的硅胶柱色谱、反相柱色谱及Sephadex LH-20凝胶色谱等方法分离,用波谱分析法鉴定化合物结构。结果 分离得到了13个酚性化合物,分别鉴定为苏式-(1, 2-二羟基丙基)-3, 5-二甲氧基苯-4-O-β-D-葡萄糖苷(1)、5, 7, 3′, 4′- tetrahydroxy-2-methoxy-3-flavanone-3-hydrate(2)、4-O-(2-hydroxy-1-hydroxymethylethyl)-dihydroconierylalcohol(3)、2, 3- dihydroxy-1-(4-hydroxy-3, 5-dimethoxyphenyl)-1-propanone(4)、槲皮素(5)、槲皮素-3-O-α-L-吡喃鼠李糖苷(6)、山柰酚(7)、山柰酚-3-O-α-L-吡喃鼠李糖苷(8)、儿茶素(9)、丁香酸-4-O-β-D-吡喃葡萄糖苷(10)、丁香酸甲酯-4-O-β-D-吡喃葡萄糖苷(11)、3, 4-二羟基苯甲酸(12)、羟基酪醇(13),同时还分离到大量的莽草酸(14)。结论 化合物1是一个新苯丙素葡萄糖苷类化合物,命名为匙叶八角苷。化合物2是首次从植物中分离得到的黄酮醇类物质氧化的水合物,可能是一人工产物,其余化合物均为首次从匙叶八角中分离得到。
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[Abstract]
Objective To investigate the chemical constituents from twigs and leaves of Illicium spathulatum. Methods The MeOH extract from the twigs and leaves of I. spathulatum was partitioned with EtOAc and n-BuOH, then these two fractions were chromatographed on silica gel column, reversed-phase C18 column, and Sephadex LH-20 column. The isolated compounds were identified by spectroscopic analyses. Results Thirteen phenolic compounds were isolated and identified as threo-(1, 2-dihydroxypropyl)-3, 5-dimethoxyphenyl-4-O-β-D-glucopyranoside (1), 5, 7, 3′, 4′-tetrahydroxy-2-methoxy-3-flavanone-3-hydrate (2), 4-O-(2-hydroxy-1-hydroxy-methylethyl)-dihydroconierylalcohol (3), 2, 3-dihydroxy-1-(4-hydroxy-3, 5-dimethoxyphenyl)-1- propanone (4), qucertin (5), quercetin-3-O-α-L-rhamnopyranoside (6), kaempferol (7), kaempferol-3-O-α-L-rhamnopyranoside (8), catechin (9), syringate-4-O-β-D-glucopyranoside (10), methyl syringate-4-O-β-D-glucopyranoside (11), 3, 4-dihydroxy benzoic acid (12), and hydroxytyrosol (13). At the same time quantity of shikimic acid (14) was isolated. Conclusion Compound 1 is a novel phenylpropanoid named spathulatoside. Compound 2 is a hydrate product oxidized from flavonols and firstly isolated from I. spathulatum, which may be an antifact. The other compounds are isolated from I. spathulatum for the first time.
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[基金项目]
国家自然科学基金资助项目(31100256)