怀槐树皮异黄酮苷类化学成分研究
Isoflavone glycosides from the bark of Maackia amurensis
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摘要: 研究怀槐 (Maackia amurensis) 树皮中的化学成分。利用大孔吸附树脂、硅胶、凝胶和ODS柱色谱等分离技术分离化合物, 根据化合物的理化性质和光谱数据鉴定其结构。从其70%乙醇提取物的正丁醇萃取部分分离得到了13个异黄酮苷类化合物, 分别为4′,6-二甲氧基-异黄酮-7-O-β-D-葡萄糖-(1→6)-β-D-吡喃葡糖苷 (1), 樱黄素- 4′-O-β-D-葡萄糖-(1→6)-β-D-吡喃葡糖苷 (2), 芒柄花苷 (3), 黄豆素苷 (4), 染料木苷 (5), saikoisoflavonoside A (6), 阿夫罗摩辛-7-O-β-D-吡喃葡糖苷 (7), 阿夫罗摩辛-7-O-β-D-木糖-(1→6)-β-D-吡喃葡糖苷 (8), 4′-甲氧基-异黄酮- 7-O-β-D-木糖-(1→6)-β-D-吡喃葡糖苷 (9), 4′,6-二甲氧基-异黄酮-7-O-β-D-芹糖-(1→6)-β-D-吡喃葡糖苷 (10), 鸢尾种苷 (11), 5-羟基-4′-甲氧基-异黄酮-7-O-β-D-葡萄糖-(1→6)-β-D-吡喃葡糖苷 (12) 和4′-甲氧基-异黄酮-7-O-β-D-芹糖-(1→6)-β-D-吡喃葡糖苷 (13)。化合物1为新化合物, 命名为怀槐异黄酮苷(maackiaisoflavonoside), 化合物2, 8, 9, 10, 12和13为该属内首次分离得到。Abstract: To study the chemical constituents of the Maackia amurensis, the constituents were isolated by various chromatographies and the structures were elucidated on the basis of chemical and spectroscopic data (ESI-MS, 1D and 2D NMR). Thirteen isoflavone glycosides were isolated from the n-BuOH-soluble fraction of the 70% ethanol extract and identified as 7-hydroxy-4′,6-dimethoxyisoflavone-7-O-β-D-glucopyranosyl-(1→6)-β-D- glucopyranoside (1), dalsympathetin (2), ononin (3), glycitin (4), genestin (5), saikoisoflavonoside A (6), afrormosin-7-O-β-D-glucopyranoside (7), gehuain (8), kushenol O (9), 7-hydroxy-4′,6-dimethoxyisoflavone-7-O- β-D-apiofuranosyl-(1→6)-β-D-glucopyranoside (10), tectoridin (11), biochanin A 7-O-β-D-gentiobioside (12) and 7-hydroxy-4′-methoxyisoflavone-7-O-β-D-apiofuranosyl-(1→6)-β-D-glucopyranoside (13). Compound 1 is a new isoflavone glycoside, named as maackiaisoflavonoside, compounds 2, 8, 9, 10, 12 and 13 were isolated from this genus for the first time.
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