Modification of Allylic Moiety of Eusiderin A to Enhance the Antifeedant Potency

Abstract

Eusiderin A(1) is a neolignan derivative which become major component in  Eusideroxylon zwagery. This compound possesses potent activity as organic insecticide because the antifungal and antifeedant showed potent activities towards some pests of horticulture pests. This research aimed to modify allilic moiety via hydroboration-oxidation, Dess Martin and osmium tetraoxide oxidation. Modification at allilic moiety led to proceed compound (2-4).   Based on antifeeding assay against Epilachna sparsa disclosed that compound 4 showed eight times higher the activity rather than 1. Meanwhile compound 2 and 3 demonstrated three time higher the activity than 1.

Keywords: eusiderin A, oxidation, allilic moiety, antifeedant.