title: Acylperoxylated and seco-mexicanolides from stems of Khaya anthotheca.
abstract: The stems of Khaya anthotheca yielded two new limonoids, which were identified on the basis of spectroscopic analysis as 1alpha,8alpha-oxido-3beta-acetoxy-2alpha-acylperoxy-1alpha,14alpha-dihydroxy-[3.3.1(10,2)]-bicyclomeliac-7,19-olide (3) and 3-acetoxy-8,14-dien-8,30-seco-khayalactone (4). Methyl 1alpha,2beta,3alpha,6,8alpha,14beta-hexahydroxy-[4.2.1(10,30).1(1,4)]-tricyclomeliac-7-oate, scopoletin, and 3-O-beta-D-glucopyranosylsitosterol were also isolated. The limonoids were of little value to clarify the basis of the nonresistance against Hypsipyla grandella.
authors.affiliation: Departamento de Química, Universidade Federal de São Carlos, Caixa postal 676, 13565-905, São Carlos-SP, Brazil.
authors.forename: Izabel C Piloto
authors.initials: IC
authors.lastname: Ferreira
authors.forename: Diógenes A Garcia
authors.initials: DA
authors.lastname: Cortez
authors.forename: M Fátima
authors.initials: MF
authors.lastname: das G F da Silva
authors.forename: Edson Rodrigues
authors.initials: ER
authors.lastname: Fo
authors.forename: Paulo C
authors.initials: PC
authors.lastname: Vieira
authors.forename: João B
authors.initials: JB
authors.lastname: Fernandes
mesh_terms: D001938:Brazil; D036701:Limonins / Q000737:chemistry / Q000302:isolation & purification*; D029582:Meliaceae / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular
chemical_list: D036701:Limonins