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Antifeedants from Pimpinella monoica

Published online by Cambridge University Press:  19 September 2011

D. L. Luthria
Affiliation:
Chemical Ecology Section, Bio-organic Division, Bhabha Atomic Research Centre, Trombay, Bombay 400 085, India
V. Ramakrishnan
Affiliation:
Chemical Ecology Section, Bio-organic Division, Bhabha Atomic Research Centre, Trombay, Bombay 400 085, India
A. Banerji
Affiliation:
Chemical Ecology Section, Bio-organic Division, Bhabha Atomic Research Centre, Trombay, Bombay 400 085, India
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Abstract

The crude n-hexane and methanol extracts of the aerial parts of plant, Pimpinella monoica Dalz. (Umbelliferae) showed significant feeding deterrency to Spodoptera litura F. larvae. Phytochemical investigation of these extracts has resulted into the isolation of one furanocoumarin and five biogenetically related furanochromones. Furanocoumarin, isopimpinellin was found to be most active. Furochromones, visnagin and khellin exhibited significant activity while their hydroxymethyl analogues, khellol and ammiol showed moderate activity. α-Hydroxyisopropyldihydrofurochromone, visamminol was found to be least active.

Résumé

Les extraits brute de n-hexane et de méthanale à partir des portions aériennes, de la plante Pimpinella monoica Dalz. (Umbelliferae) ont montré un effect phagodissuadants contre la larve Spodoptera litura F. Une recherche phytochimique faits sur ces extraits a eu le resultat d'un degagement d'un furanocoumarin et de cinq furochromones qui sent biogénétiquement lisée. Furocoumarin, isopimpinellin étalt la plus actif. Les furochromones, visnagin et khellin ont montré une activité importante, tandis que leurs analogues en methylhydroxy kellol et ammiol ont montré une activité moyenne, α-hydroxyisopropyldihydrofurochromone, visamminol était la seine actif.

Type
Research Articles
Copyright
Copyright © ICIPE 1992

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References

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