Miriamin, a defensive diterpene from the eggs of a land slug (Arion sp.).

  title={Miriamin, a defensive diterpene from the eggs of a land slug (Arion sp.).},
  author={Frank C. Schroeder and A. S{\'a}nchez Gonz{\'a}lez and Thomas Eisner and Jerrold Meinwald},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={96 24},
The eggs of the land slug Arion sp. contain a diterpene, miriamin, characterized as a polyoxygenated geranylgeraniol derivative. In bioassays with a coccinellid beetle, Harmonia axyridis, miriamin was shown to be potently antifeedant, indicating that the compound plays a protective role in nature. It is suggested that mucilaginous soil-inhabiting organisms, given their intense exposure to pathogens and predators, may be a rich source of chemical defensive agents. 
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