Identification of an insecticidal polyacetylene derivative from Chrysanthemum macrotum leaves

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• 作者：Dalila Haouas^a ; ^{dalila_haouas@yahoo.fr"" rel=""nofollow} ; ^{dalila.haouas@laposte.net"" rel=""nofollow} ; Flamini Guido^b ; ² ; Ben Halima-Kamel Monia^a ; ¹ ; Ben Hamouda Mohamed Habib^a ; ¹
• 关键词：C. macrotum ; Asteraceae ; Insecticidal activity ; Spodoptera littoralis ; Polyacetylene ; Spiroketal enol ether
• 刊名：Industrial Crops and Products
• 出版年：2011
• 出版时间：July 2011
• 年：2011
• 卷：34
• 期：1
• 页码：1128-1134
• 全文大小：631 K

文摘

Compounds responsible for insecticidal properties of Chrysanthemum macrotum (D.R.) Ball. leaves against Spodoptera littoralis Boiduval caterpillars have been investigated. The screening of the insecticidal activity was performed by incorporating methanol, buthanol or ethyl acetate extracts, or some chromatographic fractions to the caterpillars’ artificial diet. It was noted that extracts and fractions ameliorated or disturbed nutritional indexes, being not always toxic for caterpillars. Among the tested fractions, one pure compound with a high insecticidal activity (percentage of mortality 66.7 % ) was purified. The nuclear magnetic resonance study allowed its identification as a polyacetylene derivative, in particular a spiroketal enol ether one.