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Journal of Chemical Ecology

, Volume 13, Issue 1, pp 35–38 | Cite as

Defensive steroids from a carrion beetle (Silpha novaboracensis)

  • J. Meinwald
  • B. Roach
  • T. Eisner
Article

Abstract

Two novel steroids, 3α,7β-dihydroxy-14β-pregn-4-en-15,20-dione (1) and 3α,7β, 20ξ-trihydroxy-14β-pregn-4-en-15-one (4), have been characterized from the rectal gland ofSilpha novaboracensis (Coleoptera: Silphidae). Judging from the function of comparable pregnanes in another species ofSilpha, the compounds may play an antipredator role.

Key words

Coleoptera Silphidae Silpha novaboracensis steroids pregnanes 

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References

  1. Jackman, L.M., andSternhell, S. 1969. Applications of Nuclear Magnetic Resonance Spectroscopy in Organic Chemistry, 2nd ed. Pergamon Press, Oxford, pp. 241–248.Google Scholar
  2. Meinwald, J., Roach, B., Hicks, K., Alsop, D., andEisner, T. 1985. Defensive steroids from a carrion beetle (Silpha americana).Experientia 41:516–519.Google Scholar
  3. Zaretskii, Z.V. 1976. Mass Spectrometry of Steroids. John Wiley & Sons, New York. p. 28.Google Scholar

Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

  • J. Meinwald
    • 2
  • B. Roach
    • 1
  • T. Eisner
    • 2
  1. 1.Department of ChemistryCornell UniversityIthaca
  2. 2.Section of Neurobiology and BehaviorCornell UniversityIthaca

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