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Cancer Prevention02:59

Cancer Prevention

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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Updated: Jun 5, 2026

Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade
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Biosynthesis of a Flavonol from a Flavanone by Establishing a One-pot Bienzymatic Cascade

Published on: August 14, 2019

5,7-Dihydroxy-6,4'-dimeth-oxyflavone.

Ming-Yue Mou, Ke Pi, Qi-Long Zhang

    Acta Crystallographica. Section E, Structure Reports Online
    |January 5, 2011
    PubMed
    Summary
    This summary is machine-generated.

    This study details the crystal structure of a C(17)H(14)O(6) compound, revealing planar benzopyran rings and intermolecular hydrogen bonds. Crystal packing is influenced by C-H⋯π and π-π stacking interactions.

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    Area of Science:

    • Crystallography
    • Organic Chemistry
    • Supramolecular Chemistry

    Background:

    • Understanding the three-dimensional arrangement of molecules in solids is crucial for predicting material properties.
    • Benzopyran derivatives are prevalent in natural products and pharmaceuticals, necessitating detailed structural analysis.

    Purpose of the Study:

    • To elucidate the crystal structure of the title compound, C(17)H(14)O(6).
    • To investigate the intermolecular interactions governing crystal packing.

    Main Methods:

    • Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
    • Analysis of hydrogen bonding and π-π stacking interactions was performed.

    Main Results:

    • The benzopyran ring system was found to be essentially planar, with a dihedral angle of 6.84° relative to another benzene ring.
    • Centrosymmetric molecules form dimers through O-H⋯O hydrogen bonds.
    • Crystal packing is dictated by C-H⋯π and π-π stacking interactions between aromatic rings, with centroid-centroid distances ranging from 3.645 to 3.986 Å.

    Conclusions:

    • The crystal structure of C(17)H(14)O(6) is characterized by specific dihedral angles and hydrogen bonding patterns.
    • Intermolecular forces, including C-H⋯π and π-π stacking, play a significant role in the self-assembly of these molecules in the solid state.