Neoclerodanes from Teucrium orientale.
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.
Bruno
Maurizio
M
Dipartimento di Chimica Organica E. Paternò, Università di Palermo, Viale delle Scienze, Parco d'Orleans II, Palermo, Italy.
Rosselli
Sergio
S
Maggio
Antonella
A
Piozzi
Franco
F
Scaglioni
Leonardo
L
Arnold
Nelly A
NA
Simmonds
Monique S J
MS
D000818:Animals; D002855:Chromatography, Thin Layer; D045785:Diterpenes, Clerodane / Q000737:chemistry*; D005247:Feeding Behavior / Q000187:drug effects; D019686:Lamiaceae / Q000737:chemistry*; D007814:Larva; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D018411:Spodoptera
D045785:Diterpenes, Clerodane