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Journal of Chemical Ecology

, Volume 20, Issue 1, pp 135–140 | Cite as

Uscharin, the most potent molluscicidal compound tested against land snails

  • Hamdy I. Hussein
  • Alaa Kamel
  • Mohamed Abou-Zeid
  • Abdel-Khalek
  • H. El-Sebae
  • Mahmoud A. Saleh
Article

Abstract

Calotropis procera, is a shrub with broad ovate fleshy leaves that grows wild in the Egyptian deserts. The plant was discovered to be highly toxic to the land snailsThepa pisana. The active ingredient responsible for the molluscicidal activity was isolated from its latex by solvent extraction and partitioning and was finally purified by fractional crystallization from 95% aqueous ethanol. The purity of the isolated material was monitored by TLC. Chemical identification was carried out using mass, infrared, and proton magnetic resonance spectroscopic methods. The active compound was found to be uscharin, and its identity was confirmed by comparing its spectroscopic data with the literature values. The isolated compound was 128 times more toxic than methomyl to the snails tested.

Key Words

Calotropis procera land snails Theba pisana molluscicides methomyl uscharin cardenolides land mollusks mexacarbate methiocarb glycosides 

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Copyright information

© Plenum Publishing Corporation 1994

Authors and Affiliations

  • Hamdy I. Hussein
    • 1
  • Alaa Kamel
    • 1
  • Mohamed Abou-Zeid
    • 1
  • Abdel-Khalek
    • 1
  • H. El-Sebae
    • 1
  • Mahmoud A. Saleh
    • 1
  1. 1.Environmental Chemistry and Toxicology Laboratory, Department of ChemistryTexas Southern UniversityHouston

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