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Antifeedant Activity of Fatty Acid Esters and Phytosterols from Echium wildpretii.
MedLine Citation:
PMID:  22422524     Owner:  NLM     Status:  In-Data-Review    
Crude extracts and fractions from Echium wildpretii H. Pearson ex Hook. f. subsp. wildpretii (Boraginaceae) have been tested against insect species Spodoptera littoralis, Leptinotarsa decemlineata, and the aphids Myzus persicae, Diuraphis noxia, Metopolophium dirhodum, Rhopalosiphum maidis, and Rhopalosiphum padi. The EtOH extract and the lipid and steroidal fractions of E. wildpretii exhibited significant antifeedant activities against the aphids and L. decemlineata. Two bioactive mixtures composed of fatty acid esters and n-alkanes were obtained from the lipid fraction. The bioguided fractionation of the steroidal fraction resulted in the isolation of glutinol, β-sitosterol, (3β,7α)-stigmast-5-ene-3,7-diol, and (3β,7α)-7-methoxystigmast-5-en-3-ol. The latter two compounds exhibited potent antifeedant activities against L. decemlineata indicating that the presence of an O-bearing C(7) was responsible for the activities of these molecules.
Omar Santana; Matias Reina; Braulio M Fraga; Jesús Sanz; Azucena González-Coloma
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Chemistry & biodiversity     Volume:  9     ISSN:  1612-1880     ISO Abbreviation:  Chem. Biodivers.     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-03-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101197449     Medline TA:  Chem Biodivers     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  567-76     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Verlag Helvetica Chimica Acta AG, Zürich.
Instituto de Ciencias Agrarias, CSIC, Serrano 115-dpdo, ES-28006 Madrid, (phone: +34-917822104); Centro Agrario de Albaladejito, Crta. Toledo-Cuenca, km 174, ES-16194, Cuenca.
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