A New Antifeedant Alkaloid Eburnamonin from the Seed of Kopsia prunoformis Rchb.f

I Dewe. K. Anom, Jefry Jack Mamangkey

Abstract


A new antifeedant eburnamonin alkaloid were isolated from the seed of Kopsia pruniformis Rchb.f. The isolat was obtained a colourless crystal showing an antifeedant activity of 68% to Epilachna sparsa at a concentration of 0.001% (w/v). The structur were elucidated by  spectroscopic datas IR, 1H-NMR, 13C-NMR ATP, MS and isolat obtained was eburnamonin which was alkaloid compound (C19H22N2O) with a molecular weight of 294.

Keywords: Kopsia pruniformis Rchd.f, antifeedant, alkaloid, eburnamonin.


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ISSN (Paper)2224-3224 ISSN (Online)2225-0956

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