title: Molluscicidal activity of Aglaia duperreana and the constituents of its twigs and leaves.
abstract: The methanol (MeOH) extract of the twigs and leaves of Aglaia duperreana was investigated for its molluscicidal activity against Pomacea canaliculata. The extract was found to exhibit significant molluscicidal activity. The ethyl acetate soluble fraction of the extract showed the most potent molluscicidal activity among different solvent fractions. The bioactivity-guided chemical investigation of the ethyl acetate soluble fraction led to a new triterpenoid along with 15 known compounds. Their structures were elucidated by spectroscopic methods, including one- and two-dimensional nuclear magnetic resonance techniques as well as mass spectroscopic analysis. The molluscicidal activities of compounds 2-16 against P. canaliculata were also investigated. Naringenin trimethyl ether showed significant molluscicidal activity with a median lethal concentration (LC(50)) of 3.9 μg/mL, which was indicated higher potency than the positive control, tea saponin (LC(50)=4.5 μg/mL).
authors.affiliation: State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, PR China.
authors.forename: Heng
authors.initials: H
authors.lastname: Zhang
authors.forename: Han-Hong
authors.initials: HH
authors.lastname: Xu
authors.forename: Zhi-Jun
authors.initials: ZJ
authors.lastname: Song
authors.forename: Lin-Yan
authors.initials: LY
authors.lastname: Chen
authors.forename: Hao-Ju
authors.initials: HJ
authors.lastname: Wen
mesh_terms: D031602:Aglaia / Q000737:chemistry*; D000818:Animals; D044950:Flavanones / Q000302:isolation & purification / Q000494:pharmacology*; D015394:Molecular Structure; D008975:Molluscacides / Q000302:isolation & purification / Q000494:pharmacology*; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D012908:Snails / Q000187:drug effects*; D014315:Triterpenes / Q000302:isolation & purification / Q000494:pharmacology*
chemical_list: C576426:(20R)-3beta-hydroxy-lup-28,29-dioic acid; D044950:Flavanones; D008975:Molluscacides; D010936:Plant Extracts; D014315:Triterpenes; C005273:naringenin