【摘要】 目的:研究桔梗乙酸乙酯部位的化学成分。方法:采用多种色谱、核磁共振波谱方法对桔梗乙酸乙酯部位化学成分进行分离和结构鉴定。结果:分离得到9个化合物,分别为齐墩果酸(1)、木栓醇(2)、黄芩素-7-甲醚(3)、胡萝卜苷(4)、α-菠菜甾醇(5)、α-菠菜甾醇-3-O-β-D-吡喃葡萄糖苷(6)、白桦脂醇(7)、△7-豆甾烯醇(8)、β-谷甾醇(9)。结论:化合物1,2,3,4为从该植物中首次分离得到。更多还原

【Abstract】 Objective: To study the chemical constituents of ethyl acetate fraction from Platycodon grandiflorum(Jacq.)A.DC.Method: Chemical constituents were isolated by chromatographic methods and identified by NMR analysis.Results: Nine compounds are oleanolic acid(1),friedelinol(2),negletein(3),daucosterol(4),α-spinasterol(5),α-spinasterol-3-O-β-D-glucopy ranoside(6),betulin(7),stigmasta-7-dien-3β-ol(8),β-sitosterol(9).Conclusion: Compound 1,2,3 and 4 are isolated from this plant for the first time.更多还原