A Heliothis zea Antifeedant from the Abundant Birchbark Triterpene Betulin

Fulgentius N. Lugemwa, Fu Yung Huang, Michael D. Bentley, Michael J. Mendel, A. Randall Alford

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Abstract

Four triterpenoids bearing α,β-unsaturated A-ring functionality have been prepared from betulin, an abundant and readily isolated triterpene found in the bark of birch (Betula spp.). These compounds were evaluated as antifeedants in laboratory leaf-disk choice assays against bollworm larvae, Heliothis zea. One triterpenoid, 19(β,28-epoxy-2-(β-D-glucopyranosyloxy)-18α-olean-l-en-3-one (VIII), was found to display high antifeedant activity.

Original languageEnglish
Pages (from-to)493-496
Number of pages4
JournalJournal of Agricultural and Food Chemistry
Volume38
Issue number2
DOIs
Publication statusPublished - 1990 Feb

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Agricultural and Biological Sciences(all)

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