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The Determination and Interpretation of NMR Spectra of Flavonoids

  • Tom J. Mabry
  • K. R. Markham
  • M. B. Thomas

Abstract

The application of nuclear magnetic resonance (NMR) spectroscopy to the structure analysis of flavonoids is now well established. Many flavonoid aglycones, in particular isoflavones and highly methylated flavones and flavonols, are sufficiently soluble in the commonly used solvent, deuteriochloroform (CDC13) for direct NMR analysis. However, most naturally occurring flavonoids, including all of the flavonoid glycosides, have low solubility in CDC13; therefore, prior to 1964 most workers were limited to the NMR analysis of the more soluble methyl, ethyl and acetyl derivatives (see for example reference [1]). However, the signals observed for the substituent groups in these derivatives often obscure signals of other protons in the flavonoid.

Keywords

Nuc1ear Magnetic Resonance Nuc1ear Magnetic Resonance Spectrum Proton Signal Nuclear Magnetic Resonance Spectroscopy Nuc1ear Magnetic Resonance Analysis 
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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Copyright information

© Springer-Verlag New York Inc. 1970

Authors and Affiliations

  • Tom J. Mabry
    • 1
  • K. R. Markham
    • 1
  • M. B. Thomas
    • 1
  1. 1.The Cell Research Institute and Department of BotanyThe University of Texas at AustinUSA

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