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Related Experiment Video

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Source and Route of Pyrrolizidine Alkaloid Contamination in Tea Samples
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Two new compounds from Paeonia lactiflora.

QingHu Wang, Nayintai Dai, Narenchaoketu Han

    Natural Product Communications
    |April 30, 2015
    PubMed
    Summary

    Two novel compounds were isolated from Paeonia lactiflora roots. Their structures were identified using advanced spectroscopic and nuclear magnetic resonance (NMR) techniques.

    Area of Science:

    • Phytochemistry
    • Natural Product Chemistry
    • Organic Chemistry

    Background:

    • Paeonia lactiflora, a traditional medicinal herb, is known for its diverse bioactive compounds.
    • Ethnobotanical uses of Paeonia lactiflora suggest potential pharmacological activities.
    • Isolation and characterization of novel compounds contribute to understanding its chemical constituents.

    Purpose of the Study:

    • To isolate and identify new chemical entities from the roots of Paeonia lactiflora.
    • To elucidate the structures of the isolated compounds using comprehensive spectroscopic analyses.
    • To contribute to the phytochemical knowledge of the Paeonia genus.

    Main Methods:

    • Extraction of Paeonia lactiflora roots using 95% ethanol.
    • Isolation of compounds using chromatographic techniques.

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  • Structure elucidation via UV, IR, HR-ESI-MS, and 1D/2D NMR spectroscopy.

    • Main Results:

    • Two new compounds, a biphenyl derivative (1) and a pyranopyran derivative (2), were successfully isolated.
    • The structure of compound 1 was identified as 5-methyl-4,2',3',5'-tetrahydroxy-4'-methoxy-2-aldehyde biphenyl.
    • The structure of compound 2 was identified as 1,8-dioxo-1,8-dihydropyrano[3,4-c]pyran-3,6-dicarboxyl acid, diethyl ester.

    Conclusions:

    • The study successfully identified two previously undescribed compounds from Paeonia lactiflora.
    • The structural characterization was confirmed through rigorous spectroscopic data interpretation.
    • These findings expand the known chemical profile of Paeonia lactiflora and may inform future research on its bioactivity.