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[摘要]
目的 研究倒挂金钩Uncaria lancifolia茎枝的化学成分。方法 采用硅胶、RP18、Sephadex LH-20等柱色谱和高效液相色谱技术进行化合物的分离和纯化,根据理化性质和波谱数据鉴定化合物的结构。结果 从倒挂金钩茎枝的95%乙醇提取物中分离得到18个化合物,分别鉴定为台钩藤碱A (1)、台钩藤碱E (2)、异帽柱木菲碱(3)、四氢脚鸭木碱(4)、异胡豆苷(5)、卡丹宾碱(6)、glabratine (7)、异长春花苷内酰胺(8)、(13R)-hydroxy-octodeca-(9Z,11E,15Z)-trien-oic acid (9)、(6S,9R)-长寿花糖苷(10)、苯甲酰基-β-D-吡喃葡萄糖苷(11)、integracin A (12)、integracin B (13)、6β,19α-二羟基乌苏-3-氧代-12-烯-28-酸(14)、乌苏酸(15)、齐墩果酸(16)、β-谷甾醇(17)、β-胡萝卜苷(18)。结论 首次对倒挂金钩中的化学成分进行了研究,所有化合物均首次从该植物中分离得到,化合物9~13首次从该属植物中分离得出。化合物1~8为单萜吲哚生物碱,是钩藤属植物中的特征性成分。
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[Abstract]
Objective To study the chemical constituents from the stems of Uncaria lancifolia.Methods The isolation and purification were carried out by silica gel column chromatography, RP18, Sephadex LH-20, and preparative HPLC. The structures of the isolated compounds were elucidated by physical and chemical properties, and spectroscopic methods.Results Eighteen compounds were isolated and identified from 95% ethanol extract from the stems of U. lancifolia and characterized as uncarine A (1), uncarine E (2), isomitraphylline (3), tetrahydroalstonine (4), strictosidine (5), cadambine (6), glabratine (7), strictosamide (8), (13R)-hydroxy-octodeca-(9Z,11E,15Z)-trien-oic acid (9), (6S,9R)-roseoside (10), periplanetin (11), integracin A (12), integracin B (13), 6β,19α-dihydroxyurs-3-oxours-12-en-28-oic aicd (14), ursolic acid (15), oleanic acid (16), β-sitosterol (17), and β-daucosterol (18).Conclusion This is the first report for the chemical constituents from U. lancifolia. All compounds are obtained from this plant for the first time, and compounds 9-13 are isolated from Uncaria genus for the first time. Compounds 1-8 are monoterpene indole alkaloids, which are characteristic constituents in Uncaria genus.
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[基金项目]
云南省科技厅-昆明医科大学应用基础研究联合专项(2014FB014);昆明医科大学"百名中青年学术和技术骨干"培养计划(60117190410);昆明医科大学研究生创新基金项目(2017S072);昆明医科大学药学院研究生学院基金项目(YJYTC2017-3);云南省重点实验室培育计划资助项目(2017DG006)