title: Molluscicidal and anti-feedant activities of diterpenes from Euphorbia paralias L.
abstract: Nine known diterpene polyesters of segetanes, jatrophenes and paralianes have been isolated from the aerial parts of Euphorbia paralias L. The molluscicidal activity of isolated compounds was evaluated on Biomphalaria alexandrina (Ehrenberg). Paraliane diterpene, (2S,3S,4R,5R,6R,8R,12S,13S,14R,15R)-5,8,14-triacetoxy-3-benzoyloxy-15- hydroxy-9-oxo-paraliane, was the most potent compound against the snail. Anti-feedant activity was tested by a conventional leaf disc method against third-instar larvae of Spodoptera littoralis (Boisd). Jatrophene diterpene, (2R,3R,4S,5R,7S,8R,13R,15R)-2,3,5,7,15-pentaacetoxy-8-angeloyloxy-14,15- dioxojatropha-6(17)-11E-diene, had the highest anti-feedant activity among the compounds tested.
authors: Pesticide Chemistry Department, Faculty of Agriculture (Elshatby), Alexandria University, Alexandria, Egypt.
authors: Samir A M
authors: SA
authors: Abdelgaleil
authors: Ahmed F
authors: AF
authors: el-Aswad
authors: Munehiro
authors: M
authors: Nakatani
mesh_terms: D000465:Algorithms; D000818:Animals; D001681:Biological Assay; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification / Q000633:toxicity*; D028481:Euphorbia; D007313:Insecta / Q000187:drug effects; D015394:Molecular Structure; D008975:Molluscacides / Q000633:toxicity*; D010936:Plant Extracts / Q000737:chemistry / Q000633:toxicity; D012908:Snails / Q000187:drug effects*
chemical_list: D004224:Diterpenes; D008975:Molluscacides; D010936:Plant Extracts; C468576:jatrophene diterpene; C468575:paraliane diterpene; C006386:jatrophone