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  • Title: [Study on chemical constituents of flavonoids in fresh herb of Houttuynia cordata].
    Author: Meng J, Dong XP, Jiang ZH, Leung SY, Zhao ZZ.
    Journal: Zhongguo Zhong Yao Za Zhi; 2006 Aug; 31(16):1335-7. PubMed ID: 17061554.
    Abstract:
    OBJECTIVE: To study the flavonoid constituents in fresh herb of Houttuynia cordata. METHOD: Various column packing materials including Diaion HP - 20, Sephadex LH - 20, ODS and silica gel were employed for the isolation and purification of compounds from H. cordata. The structures of the compounds were identified by physiochemical properties and spectral analysis. RESULT: Five compounds were isolated, and their structures were identified as quercetin-3-O-beta-D-galactoside-7-O-beta-D-glucoside (1), kaempferol-3-O-alpha-L-rhamnopyranosyl-(1 --> 6)-beta-D-glucopyranoside (2), quercitrin (3), hyperin (4), quercetin 3-O-alpha-L-rhamnopyranosyl-7-O-beta-D-glucopyranoside (5). CONCLUSION: Compounds 1, 2 and 5 were separated from H. cordata for the first time.
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