Piscidinols H-L, apotirucallane triterpenes from the leaves of Walsura trifoliata and their insecticidal activity

• Five new apotirucallane-type terpenoids, Piscidinols H-L (1-5), were isolated from the leaves of Walsura trifoliate and their structures were fully established on the basis of detailed spectroscopic (especially 20 NMR and mass) analysis. These new compounds possessed tetracyclic and acetal rings. All the new isolates were evaluated for their antifeedant activities in tobacco caterpillar (Spodoptera aura) and castor semilooper (Achaea janata) using a no-choice laboratory bioassay and the test compounds (1-6) exhibited moderate insecticidal activities. (C) 2015 Elsevier Ltd. All rights reserved.

Ämnesord

NATURVETENSKAP  -- Kemi -- Organisk kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences -- Organic Chemistry (hsv//eng)

Nyckelord

Walsura trifoliata

Meliaceae

Apotirucallane triterpenes

Antifeedant activity

Spodoptera litura

Achaea janata

Organic Chemistry

Organisk kemi

Publikations- och innehållstyp

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