Artículo de revista
Insect antifeedant compounds from Nothofagus dombeyi and N-pumilio
Fecha
2004-07Registro en:
PHYTOCHEMISTRY 65 (14): 2173-2176 JUL 2004
0031-9422
Autor
Thoison, Odile
Sévenet, Thierry
Niemeyer Marich, August
Russell, Graeme B.
Institución
Resumen
A bioassay-guided purification of the extracts of Nothofagus dombeyi and N. pumilio leaves yielded several triterpenes and flavonoids including 2-O-acetylmaslinic acid, 3-O-acetyl 20,24,25-trihydroxydammarane, and 3,20,24,25-tetrahydroxydammarane as new natural products. All the isolated compounds were assessed for antifeeding activity against the 5th instar larvae of Ctenopsteustis obliquana. 12-Hydroxyoleanolic lactone and pectolinarigenin from N. dombeyi and dihydrooroxylin A from N. pumilio, showed significant antifeeding activity.