【摘要】 目的对三叶海棠[Malus sieboldii(Regel) Rehd]叶的化学成分进行研究。方法通过聚酰胺和硅胶柱色谱进行分离纯化,根据理化性质和NMR数据等进行化合物的结构推测。结果从三叶海棠叶水提液的甲醇沉淀后液体部分分离得到1个糖苷类化合物,用一维与二维NMR法鉴定为2-(4-(3,4-二羟基苯基)-2-氧代丁氧基-甲氧基)-2-羟基丙二酸-1-β-D-吡喃葡萄糖单酯。结论糖苷类化合物为三叶海棠叶中首次发现,为一新化合物。更多还原

【Abstract】 Objective To study the chemical constituents of Malus sieboldii. Methods Isolation and purification were carried out by polyamide and silica gel column chromatography. The structure of the compounds were estimated based on the physicochemical properties and NMR data. Results A Glycosides compound was obtained from the supernatant after water extraction-methanol deposit from Malus Sieboldii, which was identified by 1 D and 2 D NMR data as 2-(4-(3,4-dihydroxyphenyl)-2-oxobutoxy)methoxy)-2-hydroxymalonic acid-1-β-D-glucopyranose monoester. Conclution The Glycosides compound is a new compound. And it is isolated from Malussieboldii for the first time.更多还原