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Micro chemical investigation of medicinal plants. VII

Proposed structure and crystal forms of yellow compound I from the catalpa seed

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Summary

A simplified procedure is described for the isolation of the yellow compound from catalpa seeds. This compound exhibits two crystal forms. Based on chemical tests and spectral analysis, the structure of the compound appears to be 5,6-dihydroxy-7,4′-dimethoxyflavone, previously unknown as a natural product.

Zusammenfassung

Ein vereinfachtes Verfahren für die Isolierung der gelben Verbindung aus Catalpa-Samen wurde beschrieben. Diese Verbindung tritt in zwei Kristallformen auf. Auf Grund chemischer Proben und spektralanalytischer Untersuchung scheint diese Verbindung strukturell dem 5,6-Dihydroxy-7,4′-Dimethoxyflavon zu entsprechen, das bis jetzt als Naturprodukt nicht gefunden wurde.

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References

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Author notes

  1. Justin L. Hirshman

    Present address: M & T Chemicals, Inc., 07065, Rahway, N. J., USA

Authors and Affiliations

  1. Contribution from the Chemistry Division, Department of Scientific and Industrial Research, New Zealand

    Ken R. Markham, Justin L. Hirshman, H. Kupfermann & T. S. Ma

  2. The Department of Chemistry, City University of New York, USA

    Ken R. Markham, Justin L. Hirshman, H. Kupfermann & T. S. Ma

  3. Chemistry Division, Department of Scientific and Industrial Research, Private Bag, Petone, New Zealand

    Ken R. Markham

Authors
  1. Ken R. Markham
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  2. Justin L. Hirshman
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  3. H. Kupfermann
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  4. T. S. Ma
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Additional information

For Part VI see Mikrochim. Acta [Wien]1969, 1100. Inquiries and requests for reprints of this series of papers should be addressed to Prof.T. S. Ma, Department of Chemistry, City University of New York, Brooklyn, N. Y. 11210, U. S. A.

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Markham, K.R., Hirshman, J.L., Kupfermann, H. et al. Micro chemical investigation of medicinal plants. VII. Microchim Acta 58, 590–595 (1970). https://doi.org/10.1007/BF01224166

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  • DOI: https://doi.org/10.1007/BF01224166

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