title: Dimeric guaianolides and a fulvenoguaianolide from Artemisia myriantha.
abstract: The aerial parts of Artemisia myriantha have afforded one new fulvenoguaianolide and four dimeric guaianolides in addition to seven known guaianolides. The structures of all the compounds were elucidated by 2D NMR. It is speculated that the dimeric guianolides are formed via Diels-Alder type reactions of fulvenoguaianolide derivatives.
authors.affiliation: The Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong.
authors.forename: Ho-Fai
authors.initials: HF
authors.lastname: Wong
authors.forename: Geoffrey D
authors.initials: GD
authors.lastname: Brown
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D018360:Crystallography, X-Ray; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D008968:Molecular Conformation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*; D045789:Sesquiterpenes, Guaiane
chemical_list: D004365:Drugs, Chinese Herbal; D012717:Sesquiterpenes; D045789:Sesquiterpenes, Guaiane; C083346:arglabin