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New intermediates in the conversion of stigmasterol to cholestanol in the Mexican bean beetle
Year:
1986
Source of publication :
Lipids
Authors :
Svoboda, James
;
.
Volume :
21
Co-Authors:
Svoboda, J.A., Insect and Nematode Hormone Laboratory, Agricultural Research Service, USDA, Building 467, BARC-East, Beltsville, 20705, MD, United States
Cohen, C.F., Insect and Nematode Hormone Laboratory, Agricultural Research Service, USDA, Building 467, BARC-East, Beltsville, 20705, MD, United States
Lusby, W.R., Insect and Nematode Hormone Laboratory, Agricultural Research Service, USDA, Building 467, BARC-East, Beltsville, 20705, MD, United States
Thompson, M.J., Insect and Nematode Hormone Laboratory, Agricultural Research Service, USDA, Building 467, BARC-East, Beltsville, 20705, MD, United States
Facilitators :
From page:
639
To page:
642
(
Total pages:
4
)
Abstract:
Three intermediates involved in the conversion of stigmasterol to cholestanol in the Mexican bean beetle, Epilachna varivestis, were isolated and identified from an insect for the first time. The three new insect sterols, 22-stigmastenol, 22,24-cholestadienol and 24-cholestenol, were shown to be metabolites of [3H]stigmasterol and accumulated in insect tissues when larvae were fed lima bean leaves coated with azasteroid inhibitors. The side chain metabolism of the ubiquitous phytosterol stigmasterol in the Mexican bean beetle is similar to that in other species that produce cholesterol from C28 and C29 phytosterols; however, the Mexican bean beetle initially reduces the Δ5-bond and produces mainly cholestanol and lesser amounts of lathosterol as dealkylation products. © 1986 American Oil Chemists' Society.
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DOI :
10.1007/BF02537213
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
19597
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:30
Scientific Publication
New intermediates in the conversion of stigmasterol to cholestanol in the Mexican bean beetle
21
Svoboda, J.A., Insect and Nematode Hormone Laboratory, Agricultural Research Service, USDA, Building 467, BARC-East, Beltsville, 20705, MD, United States
Cohen, C.F., Insect and Nematode Hormone Laboratory, Agricultural Research Service, USDA, Building 467, BARC-East, Beltsville, 20705, MD, United States
Lusby, W.R., Insect and Nematode Hormone Laboratory, Agricultural Research Service, USDA, Building 467, BARC-East, Beltsville, 20705, MD, United States
Thompson, M.J., Insect and Nematode Hormone Laboratory, Agricultural Research Service, USDA, Building 467, BARC-East, Beltsville, 20705, MD, United States
New intermediates in the conversion of stigmasterol to cholestanol in the Mexican bean beetle
Three intermediates involved in the conversion of stigmasterol to cholestanol in the Mexican bean beetle, Epilachna varivestis, were isolated and identified from an insect for the first time. The three new insect sterols, 22-stigmastenol, 22,24-cholestadienol and 24-cholestenol, were shown to be metabolites of [3H]stigmasterol and accumulated in insect tissues when larvae were fed lima bean leaves coated with azasteroid inhibitors. The side chain metabolism of the ubiquitous phytosterol stigmasterol in the Mexican bean beetle is similar to that in other species that produce cholesterol from C28 and C29 phytosterols; however, the Mexican bean beetle initially reduces the Δ5-bond and produces mainly cholestanol and lesser amounts of lathosterol as dealkylation products. © 1986 American Oil Chemists' Society.
Scientific Publication
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