摘要
对用半制备HPLC方法从黄花棘豆水溶性部分中分离提纯的二个黄酮甙化合物1和2,用光谱分析及化学方法进行了鉴定,确定化合物1为鼠李柠檬素-3-半乳糖-4′-葡萄糖甙,化合物2为鼠李柠檬素-3-半乳糖甙。化合物1为一新的黄酮甙化合物,化合物2在棘豆属植物中首次发现。
Two flavonoid glycosides separated from water soluble fraction of Oxytropis ochrocephala Bge. were identified by using IR, NMR, and MS spectroscopic methods. The aglycones and sugars of the two compounds were determined directly from the hydrolytic solutions by using a sugar column and a bonded phase column. The results showed that compound 1 contained two kinds of sugars which have the same retention times as galactose and glucose, compound 2 only contained galactose. The aglycones of the two compounds have the same retention times and UV-spectra of rhamnocitrin. Finally, the structures of the two compounds were elucidated as rhamnocitrin-3-galactoside-4'-glucoside and rhamnocitrin-3-galactoside. The first one is a new flavonoid glycoside and the second one is, for the first time, found in the Oxytropis species.
基金
国家自然科学基金资助项目
关键词
黄花棘豆
黄酮
Oxytropis ochrocephala
Rhamnocitrin-3-galactoside-4'-glucoside
Rhamnocitrin-3-galactoside
