Document Detail

Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
MedLine Citation:
PMID:  18461966     Owner:  NLM     Status:  MEDLINE    
A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
Kobaisy Mozaina; Charles L Cantrell; Amelia B Mims; Alan R Lax; Maria R Tellez; Weste L A Osbrink
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Publication Detail:
Type:  Journal Article     Date:  2008-05-08
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  56     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2008 Jun 
Date Detail:
Created Date:  2008-06-05     Completed Date:  2008-07-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  4021-6     Citation Subset:  IM    
National Products Utilization Research Unit, Agricultural Research Service, U.S. Department of Agriculture, Mississippi 38677, USA.
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MeSH Terms
Benzoquinones* / chemistry
Eating / drug effects
Insect Control / methods
Quantitative Structure-Activity Relationship
Structure-Activity Relationship
Reg. No./Substance:
0/Benzoquinones; 0/Insecticides

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