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  • Title: [Study on chemical composition of ethylacetate fraction from Polygonum amplexicaule var. sinense].
    Author: Xiang MX, Hu YJ, Yan YJ.
    Journal: Zhong Yao Cai; 2012 Oct; 35(10):1610-4. PubMed ID: 23627126.
    Abstract:
    OBJECTIVE: To study chemical composition of ethylacetate fraction from Polygonoum amplexicaule D. Don var. sinense Forb. METHODS: TLC, Normal-phase silica gel column, reveres-phase silica gel column, Sephadex-LH, semi-preparative HPLC column were used to isolate chemical compositions of ethylacetate fraction from Polygonoum var. sinense. RESULTS: Eight compounds were identified as: 1. P-Hydroxybenzoic acid, 2. P-Hydroxybenzoic ethanol, 3. Diisobutyl phthalate, 4. Vanillin, 5. Isovanillic acid, 6.3,4,5-trihydroxy-benzoic acid-butyl ester, 7. 4-hydroxy-3-methoxycinnamic acid, 8. 7-hydroxy-6-methoxycoumarin. CONCLUSION: Except of Diisobutyl phthalate, the others are isolated for the first from this plant, moreover, Vanillin, Isovanillic acid and P-hydro -xyphenethyl alcohol are gained from genus for the first time.
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