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Neoclerodanes from Teucrium orientale.

Maurizio Bruno·Sergio Rosselli·Antonella Maggio·Franco Piozzi·Leonardo Scaglioni·Nelly A Arnold·Monique S J Simmonds
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Abstract

Two new neoclerodane diterpenoids, 6-deacetyl-teucrolivin A (5) and 8beta-hydroxy-teucrolivin B (6), were isolated from the aerial parts of Teucrium orientale, along with four already known neoclerodane diterpenoids, teucrolivin A (1), teucrolivin B (2), teucrolivin C (3) and teucrolivin H (4), previously isolated from Teucrium oliverianum. Their structures were elucidated on the basis of spectroscopic evidence and chemical transformations. Compounds 1-3 were assayed for antifeedant activity against Spodoptera littoralis, S. frugiperda and Heliocoverpa armigera. Teucrolivin A was the most potent of the three compounds tested.

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AnimalsChromatography, Thin LayerDiterpenes, ClerodaneFeeding BehaviorLamiaceaeLarvaMagnetic Resonance SpectroscopyMolecular ConformationSpodopteraJournal Article

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Maurizio Bruno, Sergio Rosselli, Antonella Maggio, Franco Piozzi, Leonardo Scaglioni, Nelly A Arnold, Monique S J Simmonds. 2004. Neoclerodanes from Teucrium orientale.. https://doi.org/10.1248/cpb.52.1497

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