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Insecticidal properties and chemical constitution

Part V. Flavanones and chalkones
  • N. Narasimhachari
  • T. R. Seshadri
Article

Summary

The toxic properties of a number of simple hydroxy and methoxy flavanones and chalkones have been studied using fresh-water fish. The flavanones resemble the flavones in a general way. However the methyl ethers of the flavanones appear to be less toxic than the corresponding flavone derivatives, whereas with the hydroxy compounds the reverse seems to be the case.

With the chalkones the toxic symptoms set in more slowly but they are more persistent. The methoxy chalkones are less toxic than the isomeric flavanones whereas when a number of hydroxyl groups are present the reverse is the case. As soon as all the hydroxyl groups in chalkones are methylated the toxicity increases considerably.

Keywords

Flavone Naringenin Flavanone Naringin Methyl Ether 
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.

References

  1. 1.
    Brückner and GyorgyiNature, 1936,138, 1057. Bentsath, Rusznyak and GyorgyiIbid., Nature, 1937,139, 326.CrossRefGoogle Scholar
  2. 2.
    Asahina and InubuseJ. Pharm. Soc. Japan, 1929,49, 128.Google Scholar
  3. 3.
    SemperArch. Exp. Path. Pharm., 1910,63, 10.CrossRefGoogle Scholar
  4. 4.
    McGookin, Robertson and TittenserJ. C. S., 1939, 1579.Google Scholar
  5. 5.
    Krishnaswamy and SeshadriProc. Ind. Acad. Sci., A, 1942,16, 231.Google Scholar
  6. 6.
    EllisonJ. C. S., 1927, 1720.Google Scholar
  7. 7.
    ShinodaJ. Pharm. Soc. Japan, 1928,48, 214.Google Scholar
  8. 8.
    Rao and SeshadriProc. Ind. Acad. Sci., A, 1946,23, 213.Google Scholar
  9. 9.
    Ibid.,, 1941,14, 29.Google Scholar
  10. 10.
    Perkin and HummelJ. C. S., 1904,85, 1459.Google Scholar
  11. 11.
    Kostanecki, Lampe and TamborBer., 1904,37, 1402.Google Scholar
  12. 12.
    Bargellini and MontiGaz. Chim. ital., 1914,44 II, 25.Google Scholar
  13. 13.
    SiddiquiJ. I. C. S., 1937,14, 703.Google Scholar
  14. 14.
    Murti, Row and SeshadriProc. Ind. Acad. Sci., A, 1948Google Scholar
  15. 15.
    Rao and SeshadriIbid., Proc. Ind. Acad. Sci., A, 1947.Google Scholar

Copyright information

© Indian Academy of Sciences 1948

Authors and Affiliations

  • N. Narasimhachari
    • 1
  • T. R. Seshadri
    • 1
  1. 1.Department of ChemistryAndhra UniversityWaltair

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