title: Distribution of pyranocoumarins in Calophyllum cordato-oblongum.
abstract: Twigs of Calophyllum cordato-oblongum have been shown to contain a new pyranocoumarin, the methyl ether of cordatolide B, three reported pyranocoumarins, cordato-oblongic acid, friedelin, canophyllol and taraxerol. Buds of this species contained large quantities of pyranocoumarins and a small amount of sitosterol. This observation indicates that the coumarin-synthesising tissues are mainly located at the non woody young plant parts of C. cordato-oblongum.
authors.affiliation: Natural Products Programme, Institute of Fundamental Studies, Kandy, Sri Lanka.
authors.forename: H R
authors.initials: HR
authors.lastname: Dharmaratne
authors.forename: J R
authors.initials: JR
authors.lastname: Mayuri Sajeevani
authors.forename: G P
authors.initials: GP
authors.lastname: Marasinghe
authors.forename: E M
authors.initials: EM
authors.lastname: Shantha Ekanayake
mesh_terms: D019380:Anti-HIV Agents / Q000302:isolation & purification / Q000378:metabolism / Q000494:pharmacology; D003374:Coumarins / Q000302:isolation & purification* / Q000378:metabolism* / Q000494:pharmacology; D054303:HIV Reverse Transcriptase / Q000037:antagonists & inhibitors / Q000378:metabolism; D010936:Plant Extracts / Q000302:isolation & purification / Q000378:metabolism / Q000494:pharmacology; D018515:Plant Leaves / Q000737:chemistry / Q000378:metabolism; D010946:Plants, Medicinal / Q000737:chemistry* / Q000378:metabolism*; D011714:Pyrans / Q000302:isolation & purification* / Q000378:metabolism* / Q000494:pharmacology; D018894:Reverse Transcriptase Inhibitors / Q000302:isolation & purification / Q000378:metabolism / Q000494:pharmacology
chemical_list: D019380:Anti-HIV Agents; D003374:Coumarins; D010936:Plant Extracts; D011714:Pyrans; D018894:Reverse Transcriptase Inhibitors; D054303:HIV Reverse Transcriptase