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Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
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Related Experiment Video

Updated: Jun 5, 2026

Semi-Targeted Ultra-High-Performance Chromatography Coupled to Mass Spectrometry Analysis of Phenolic Metabolites in Plasma of Elderly Adults
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Alpinumisoflavone.

Jerry Joe Ebow Kingsley Harrison, Youhei Tabuchi, Hiroyuki Ishida

    Acta Crystallographica. Section E, Structure Reports Online
    |January 5, 2011
    PubMed
    Summary

    This study details the molecular structure of a novel benzopyranone derivative, synthesized via demethylation. Its unique fused tricyclic system and hydrogen-bonding interactions form molecular tapes.

    Area of Science:

    • Organic Chemistry
    • Crystallography
    • Molecular Structure

    Background:

    • The synthesis of novel organic compounds is crucial for discovering new materials and pharmaceuticals.
    • Isoflavone derivatives are known for their diverse biological activities.
    • Understanding molecular structure aids in predicting chemical and physical properties.

    Purpose of the Study:

    • To synthesize and characterize a novel benzopyranone derivative.
    • To elucidate the detailed molecular structure of the synthesized compound.
    • To investigate intermolecular interactions within the crystal lattice.

    Main Methods:

    • Demethylation of 4-O-methyl-alpinum-iso-flavone.
    • Single-crystal X-ray diffraction analysis.

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  • Analysis of molecular conformation and hydrogen bonding.

    • Main Results:

    • A novel C(20)H(16)O(5) compound, 5-hydroxy-7-(4-hydroxyphenyl)-2,2-dimethyl-2H,6H-benzo[1,2-b:5,4-b']dipyran-6-one, was successfully synthesized.
    • The molecular structure features a fused tricyclic system with a nearly planar benzopyrone core and a half-chair conformation in the pyran ring.
    • Molecules are organized into tape-like structures through O-H⋯O hydrogen bonds along the b axis.

    Conclusions:

    • The study provides a comprehensive structural characterization of a new benzopyranone derivative.
    • The observed hydrogen bonding pattern suggests potential for self-assembly and material design.
    • This work contributes to the understanding of iso-flavone chemistry and crystal engineering.