Insect Antifeedant Components of Senecio fistulosus var. fistulosus-Hualtata

Ruiz-Vásquez L.; Reina M.; Fajardo V.; López M.; González-Coloma A.


From a bioactive methanolic extract of Senecio fistulosus, the antifeedant effects of the alkaloidal and non-alkaloidal fractions were tested against the insects Spodoptera littoralis, Myzus persicae and Rhopalosiphum padi, with the non-alkaloidal fraction being antifeedant. The phytochemical study of the non-alkaloidal fraction of S. fistulosus, resulted in the isolation of four compounds, two 9-oxo-furanoeremophilanes (1, 2), an eremophilanolide, 1 beta,10 beta-epoxy-6-acetoxy-8 alpha-hydroxy-eremofil-7(11)-en-8 beta,12-olide (3) and a maaliol derivative (4). The alkaloidal fraction yielded two known pyrrolizidine alkaloids (5, 6). Compounds 1, 3 and 4 are new natural products. Furanoeremophilane 2 was a strong antifeedant against S. littoralis and maaliane 4 inhibited the settling of M. persicae.

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Título según WOS: Insect Antifeedant Components of Senecio fistulosus var. fistulosus-Hualtata
Título según SCOPUS: Insect antifeedant components of senecio fistulosus var. Fistulosus—Hualtata
Título de la Revista: PLANTS-BASEL
Volumen: 8
Número: 6
Editorial: MDPI
Fecha de publicación: 2019
Idioma: English