Iridoid glucosides with insecticidal activity from Galium melanantherum

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Abstract

The insecticidal activity of the endemic species Galium melanantherum was evaluated against Crematogaster scutellaris ants and Kalotermes flavicollis termites. Iridoid glucosides 1-7 were isolated for the first time as metabolites of the investigated plant, along with the coumarin scopolin. The main components of the extract were found to be the non-acetylated iridoids: geniposidic acid (1), 10-hydroxyloganin (2), deacetyldaphylloside (3), monotropein (4), deacetylasperulosidic acid (5) and scandoside (6), while asperulosidic acid (7) was present only in minute quantities. All isolated metabolites were identified on the basis of their spectral data. Laboratory bioassays revealed significant levels of toxicity for 1-4 against Kalotermes flavicollis termites and Crematogaster scutellaris ants. © 2007 Verlag der Zeitschrift für Naturforschung.

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APA

Tzakou, O., Mylonas, P., Vagias, C., & Petrakis, P. V. (2007). Iridoid glucosides with insecticidal activity from Galium melanantherum. Zeitschrift Fur Naturforschung - Section C Journal of Biosciences, 62(7–8), 597–602. https://doi.org/10.1515/znc-2007-7-823

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