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Spectroscopic investigation of flavonoids. Detection of free phenolic hydroxyl groups in various positions

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Chemistry of Natural Compounds Aims and scope

Summary

1. Sodium acetate ionizes the 7-hydroxy group in flavones, flavonols, and flavanones, and the 4-hydroxy group in chalcones, causing a considerable bathochromic displacement of the absorption maximum of the long-wave band. In isoflavones containing a free 7-hydroxy group a bathochromic displacement of the absorption maximum of the medium-wave part of the spectrum is found.

2. A spectroscopic method using zirconyl nitrate and citric acid for detecting free hydroxy groups in positions 3 and 5 in flavonoids when they are present together and separately has been developed.

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Authors and Affiliations

  1. Kharkov Scientific Research Chemical and Pharmaceutical Institute, USSR

    V. I. Litvinenko & N. P. Maksyutina

Authors
  1. V. I. Litvinenko
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  2. N. P. Maksyutina
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Additional information

Khimiya Prirodnykh Soedinenii, Vol. 1, No. 6, pp. 420–424, 1965

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Litvinenko, V.I., Maksyutina, N.P. Spectroscopic investigation of flavonoids. Detection of free phenolic hydroxyl groups in various positions. Chem Nat Compd 1, 330–334 (1965). https://doi.org/10.1007/BF00568304

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  • DOI: https://doi.org/10.1007/BF00568304

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