title: Rings B,D-seco limonoid antifeedants from Swietenia mahogani.
abstract: Three phragmalin-type limonoids, swietephragmin H (1), swietephragmin I (2) and 11-hydroxyswietephragmin B (3), and a mexicanolide-type limonoid 2-hydroxy-6-deacetoxyswietenine (4), together with known compounds, 6-O-acetyl-2-hydroxyswietenin (5), 2-hydroxyswietenine (6), swietemahonin G (7), methyl 6-hydroxyangolensate (8) and 7-deacetoxy-7-oxogedunin (9) were isolated from the leaves of Swietenia mahogani (Meliaceae). Their structures were established by extensive NMR experiments in conjunction with mass spectrometry. The antifeedant activity of the isolated compounds was evaluated.
authors.affiliation: Department of Pesticide Chemistry, Faculty of Agriculture, Alexandria University, Alexandria, Egypt. Electronic address: samir1969us@yahoo.com.
authors.forename: Samir A M
authors.initials: SA
authors.lastname: Abdelgaleil
authors.forename: Matsumi
authors.initials: M
authors.lastname: Doe
authors.forename: Munehiro
authors.initials: M
authors.lastname: Nakatani
mesh_terms: D000818:Animals; D004534:Egypt; D005247:Feeding Behavior / Q000187:drug effects*; D007814:Larva / Q000187:drug effects; D036701:Limonins / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D029582:Meliaceae / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018515:Plant Leaves / Q000737:chemistry; D012278:Ricinus / Q000187:drug effects; D018411:Spodoptera / Q000187:drug effects
chemical_list: C000589152:11-hydroxyswietephragmin B; D036701:Limonins; C554989:mexicanolide; C000589150:swietephragmin H; C000589151:swietephragmin I
keywords: Insect antifeedants; Meliaceae; Mexicanolides; Phragmalins; Rings B,D-seco limonoids; Swietenia mahogani