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The Ultraviolet Spectra of Flavones and Flavonols

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Abstract

The methanol spectra of flavones and flavonols exhibit two major absorption peaks in the region 240 – 400 nm1. These two peaks are commonly referred to as Band I (usually 300 – 380 nm, Table V-1 records the λmaxvalues for Band I for all flavones and flavonols examined in the present investigation), and Band II (usually 240 – 280 nm). Band I is considered to be associated with absorption due to the B-ring cinnamoyl system, and Band II with absorption involving the A-ring benzoyl system (see III) [1].

Keywords

  • Methyl Ether
  • Bathochromic Shift
  • Hypsochromic Shift
  • Ultraviolet Spectrum
  • Oxidation Pattern

These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Mabry, T.J., Markham, K.R., Thomas, M.B. (1970). The Ultraviolet Spectra of Flavones and Flavonols. In: The Systematic Identification of Flavonoids. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-88458-0_5

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  • DOI: https://doi.org/10.1007/978-3-642-88458-0_5

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