title: Beta-orcinol depsidones from the lichen Usnea sp. from Sri Lanka.
abstract: Two beta-orcinol depsidone lactones, the methyl ethers of menegazziaic acid and stictic acid were isolated along with glyceryl trilinolate and usnic acid from an Usnea sp. new to Sri Lanka growing on rotting trees of Acacia decurrans. Usnic acid exhibited potent antitermite activity against a common pest of tea, Glyptotermes dilatatus, at low elevations.
authors.affiliation: Department of Chemistry, University of Peradeniya, Peradeniya, Sri Lanka.
authors.forename: Selvaluxmy
authors.initials: S
authors.lastname: Kathirgamanathar
authors.forename: David E
authors.initials: DE
authors.lastname: Williams
authors.forename: Raymond J
authors.initials: RJ
authors.lastname: Andersen
authors.forename: Karunananda
authors.initials: K
authors.lastname: Bombuwela
authors.forename: Dilip
authors.initials: D
authors.lastname: De Silva
authors.forename: Veranja
authors.initials: V
authors.lastname: Karunaratne
mesh_terms: D000818:Animals; D001572:Benzofurans / Q000302:isolation & purification / Q000494:pharmacology; D007300:Insect Control; D020049:Isoptera; D007783:Lactones / Q000302:isolation & purification*; D013188:Sri Lanka; D014197:Trees; D020949:Usnea / Q000737:chemistry*
chemical_list: D001572:Benzofurans; D007783:Lactones; C073339:usnic acid