title: Two new triterpenoids from the bark of Eucalyptus exserta and their molluscicidal and cytotoxic activities.
abstract: Two new triterpenoids, 2α-hydroxyurs-12-en-28-oic acid-3β-trans- isoferulate (1) and 2α, 3α, 24-trihydroxyolean-18-en-28-oic acid (2), together with three known triterpenoids (3-5) were isolated from the methanol extract of the bark of Eucalyptus exserta. Their structures were determined by spectroscopic means. Compounds 1, 2, and 5 exhibited molluscicidal activity against Pomacea canaliculata. All isolated compounds showed significant cytotoxic activity against Spodoptera litura (SL) cells.
authors.affiliation: Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Education, South China Agricultural University, Wushan, Guangzhou, People's Republic of China.
authors.forename: Jingjing
authors.initials: J
authors.lastname: Li
authors.forename: Hanhong
authors.initials: H
authors.lastname: Xu
authors.forename: Wenwei
authors.initials: W
authors.lastname: Tang
authors.forename: Zhijun
authors.initials: Z
authors.lastname: Song
mesh_terms: D000818:Animals; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D005052:Eucalyptus / Q000737:chemistry*; D049851:Gastropoda / Q000187:drug effects; D015394:Molecular Structure; D008975:Molluscacides / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D024301:Plant Bark / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D018411:Spodoptera / Q000187:drug effects; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*
chemical_list: D008975:Molluscacides; D010936:Plant Extracts; D014315:Triterpenes