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  • Title: [Study on flavonoids from leaf of Ipomoea batatas].
    Author: Luo JG, Kong LY.
    Journal: Zhongguo Zhong Yao Za Zhi; 2005 Apr; 30(7):516-8. PubMed ID: 16011096.
    Abstract:
    OBJECTIVE: To investigate the flavonoid constituents of Ipomoea batatas. METHOD: The leaf was extracted with EtOH and partitioned with CHCl3, EtOAc and n-BuOH respectively. The chemical components of EtOAc fraction were isolated by silica gel and sephadex LH-20 column chromatography. The chemical structures were elucidated on the basis of physic-chemical properties and spectral data. RESULT: Five compounds were isolated and identified as: tiliroside (I), astragalin (II), rhamnocitrin (III), rhamnetin (IV) and kaempferol (V). CONCLUSION: All of these five compounds were obtained from this plant for the first time.
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