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Constitution of oroxylin-A and synthesis of its diethyl-ether

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Summary

The experiments described in this paper show that a pure sample of oroxylin-A melts at 219–20° (acetate, 139–40°), that the substance melting at 231–32° is a mixture of it with chrysin and that this mixture could be separated by fractionation of the acetates. The constitution of oroxylin-A as the 6-methyl ether of baicalein is confirmed by ethylating it to the diethyl ether and showing that the product is identical with a synthetic sample of 6-methoxy-5 ∶ 7-diethoxy flavone. The details of the synthesis are given.

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References

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Authors and Affiliations

  1. Department of Chemistry, Andhra University, Waltair

    L. Ramachandra Row, V. D. Nageswara Sastry, T. R. Seshadri & T. R. Thiruvengadam

Authors
  1. L. Ramachandra Row
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  2. V. D. Nageswara Sastry
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  3. T. R. Seshadri
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  4. T. R. Thiruvengadam
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Row, L.R., Sastry, V.D.N., Seshadri, T.R. et al. Constitution of oroxylin-A and synthesis of its diethyl-ether. Proc. Indian Acad. Sci. (Math. Sci.) 28, 189 (1948). https://doi.org/10.1007/BF03171083

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  • DOI: https://doi.org/10.1007/BF03171083

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