title: Limonoids from Swietenia macrophylla and S. aubrevilleana.
abstract: An investigation of the seeds of Swietenia macrophylla and S. aubrevilleana (Meliaceae) is reported. Three new compounds, augustineolide (1) and 3beta,6-dihydroxydihydrocarapin (2) from S. macrophylla and 6-acetoxyhumilinolide C (3) from S. aubrevilleana were isolated and characterized along with fifteen known compounds. Four of the compounds were subjected to an antifeedant bioassay on the final instar larvae of Spodoptera frugiperda. The antifeedant activity was comparable to that of bicyclononanolides previously tested.
authors.affiliation: Departments of Chemistry and Plant Sciences, University of the West Indies, St. Augustine, Trinidad and Tobago, and Department of Chemistry, University of Toronto, Ontario, Canada. bmoot@tstt.net.tt
authors.forename: B S
authors.initials: BS
authors.lastname: Mootoo
authors.forename: A
authors.initials: A
authors.lastname: Ali
authors.forename: R
authors.initials: R
authors.lastname: Motilal
authors.forename: R
authors.initials: R
authors.lastname: Pingal
authors.forename: A
authors.initials: A
authors.lastname: Ramlal
authors.forename: A
authors.initials: A
authors.lastname: Khan
authors.forename: W F
authors.initials: WF
authors.lastname: Reynolds
authors.forename: S
authors.initials: S
authors.lastname: McLean
mesh_terms: D000818:Animals; D003864:Depression, Chemical; D005247:Feeding Behavior / Q000187:drug effects*; D006576:Heterocyclic Compounds, 4 or More Rings / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D036701:Limonins; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D013056:Spectrophotometry, Ultraviolet; D018411:Spodoptera / Q000502:physiology*
chemical_list: C402910:3,6-dihydroxydihydrocarapin; C402911:6-acetoxyhumilinolide C; D006576:Heterocyclic Compounds, 4 or More Rings; D036701:Limonins; C402909:augustineolide