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 language | English (US) |
|---|---|
| Pages (from-to) | 493-496 |
| Number of pages | 4 |
| Journal | Journal of Agricultural and Food Chemistry |
| Volume | 38 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 1 1990 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Agricultural and Biological Sciences(all)
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A Heliothis zea Antifeedant from the Abundant Birchbark Triterpene Betulin. / Lugemwa, Fulgentius Nelson; Huang, Fu Yung; Bentley, Michael D.; Mendel, Michael J.; Alford, A. Randall.
In: Journal of Agricultural and Food Chemistry, Vol. 38, No. 2, 01.01.1990, p. 493-496.Research output: Contribution to journal › Article
TY - JOUR
T1 - A Heliothis zea Antifeedant from the Abundant Birchbark Triterpene Betulin
AU - Lugemwa, Fulgentius Nelson
AU - Huang, Fu Yung
AU - Bentley, Michael D.
AU - Mendel, Michael J.
AU - Alford, A. Randall
PY - 1990/1/1
Y1 - 1990/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=33751553444&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33751553444&partnerID=8YFLogxK
U2 - 10.1021/jf00092a035
DO - 10.1021/jf00092a035
M3 - Article
AN - SCOPUS:33751553444
VL - 38
SP - 493
EP - 496
JO - Journal of Agricultural and Food Chemistry
JF - Journal of Agricultural and Food Chemistry
SN - 0021-8561
IS - 2
ER -