Article
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY  (1999)

Isolation, characterization, and biological activity of naphthoquinones from Calceolaria andina L.

Khambay B.P.S.; Batty D.; Cahill M.; Denholm I.; Mead-Briggs M.; Vinall S.; Niemeyer H.M.; Simmonds M.S.J.

Keywords: chemistry, isolation, rat, insects, toxicity, resistance, insect, purification, animals, synthesis, rats, plant, leaf, experiment, resonance, insecta, nuclear, leaves, naphthoquinones, dose, control, insecticide, calceolaria, scrophulariaceae, article, hemiptera, insecticides, mammalia, cross, testing, magnetic, andina, animal, pest, naphthoquinone, derivative, nonhuman, Animalia, Lethal, 50, and, Plants,, 1,4, Medicinal, ld, Arthropoda

Abstract

Two compounds recognized as responsible for the insecticidal activity of extracts of Calceolaria andina L. (Scrophulariaceae) have been isolated and characterized as 2-(1,1-dimethylprop-2-enyl)3-hydroxy-1,4-naphthoquinone and the corresponding acetate, 2-acetoxy-3-(1,1-dimethylprop-2-enyl)-1,4- naphthoquinone. Their activities against 29 pest species and 9 beneficial species of arthropod from a total of 11 orders have been determined. Activities against homopteran and acarine species are of the same order as those of established pesticides, and, significantly, no cross-resistance is observed for strains resistant to established classes of insecticide. Mammalian toxicities are low.

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Título de la Revista: JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volumen: 47
Número: 2
Editorial: American Chemical Society
Fecha de publicación: 1999
Página de inicio: 770
Página final: 775
URL: http://www.scopus.com/inward/record.url?eid=2-s2.0-0033045588&partnerID=q2rCbXpz