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Nuclear oxidation in the flavone series

Part VI. A new synthesis of calycopteretin and 6: 8-dihydroxy-quercetin

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Summary

It is shown that 5:6:7:8-hydroxy-flavonols (Calycopterein series) can be made from 5:6:7-hydroxy-flavonols (quercetagetin series) by the nuclear oxidation of the 8-position. Quercetagetin and nor-tangeretin have thus been converted into 6:8-dihydroxy-quercetin and calycopteretin in good yields.

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References

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Authors and Affiliations

  1. Department of Chemistry, Andhra University, Waltair

    S. Rajagopalan, K. Visweswara Rao & T. R. Seshadri

Authors
  1. S. Rajagopalan
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  2. K. Visweswara Rao
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  3. T. R. Seshadri
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Rajagopalan, S., Rao, K.V. & Seshadri, T.R. Nuclear oxidation in the flavone series. Proc. Indian Acad. Sci. 26, 18 (1947). https://doi.org/10.1007/BF03170944

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  • DOI: https://doi.org/10.1007/BF03170944

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