目的:研究番荔枝果皮中的小极性成分.方法:番荔枝果皮95％乙醇提取物的小极性部位经硅胶柱分离,根据化合物理化性质和波谱数据鉴定结构.结果:从番荔枝果皮小极性部位中分离得到8个化合物,分别鉴定为:二十三烷酸(1)、β-谷甾醇(2)、琥珀酸(3)、annosquamosin D (4)、4α-hydroxy-19-nor-(E)-kauran-17-oic acid(5)、(E)-16β,17-dihydroxy-kauran-19-oic acid(6)、(E)-16α,17-dihydroxy-kauran-19-oic acid(7)、16β-hydroxy-17-acetoxy-(E)-kauran-19-oic acid(8).结论:除化合物6外,其他均为首次从番荔枝果皮中分离得到.
Low Polar Constituents from Annona squamosa Fruit Pericarp
Objective:To study the low polar constituents from Annona squamosa fruit pericarp.Methods:The fruit pericarp was percolated with 95％ EtOH at room temperature.The extract was subjected to Silica gel chromatography and eluted with gradually more polar and EtOAc-MeOH mixtures.The part eluted range Pet-EtOAc from 5 : 1 to 1 : 1 was subjected to repeated column chromatogra-phy.The constituents were identified by physicochemical property and NMR data.Results:Eight constituents were isolated and identified as tricosane (1) ,β-sitosterol (2), succinic acid (3), annosquamosin D (4), 4α-hydroxy-1 9-nor-(E)-kauran-17-oic acid (5), (E)-16β,17-dihydroxy-kauran-19-oic acid(6), (E)-16α, 17-dihydroxy-kauran-19-oic acid (7), and 16β-hydroxy-17-acetoxy-(E)-kauran-19-oic acid(8).Conclusion:All constituents are firstly isolated from Annona squamosa fruit pericarp except compound 6.
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