title: Biflavones from Chamaecyparis obtusa.
abstract: From the leaves of Chamaecyparis obtusa several biflavones were isolated and identified, namely: sciadopitysin, ginkgetin, isoginkgetin, podocarpusflavone B, 7,7"-O-dimethylamentoflavone, bilobetin, podocarpusflavone A, and 7-O-methylamentoflavone. The presence of amentoflavone and hinokiflavone was also confirmed. The composition of biflavones in other Chamaecyparis species--Ch. lawsoniana, Ch. thyoides--and cultivar varieties--Ch. pisifera "Squarrosa", Ch. pisifera "Boulevard"--was compared using the HPLC method. It was stated, that podocarpusflavone A and 7-O-methylamentoflavone in addition to amentoflavone and hinokiflavone may be classified as chemotaxonomic markers of the genus Chamaecyparis.
authors.affiliation: Department of Pharmacognosy, Medical University of Gdańsk, Poland. krauze@amg.gda.pl
authors.forename: Mirosława
authors.initials: M
authors.lastname: Krauze-Baranowska
authors.forename: Loretta
authors.initials: L
authors.lastname: Pobłocka
authors.forename: Atef Ahmed
authors.initials: AA
authors.lastname: El-Hela
mesh_terms: D029780:Chamaecyparis / Q000737:chemistry* / Q000145:classification; D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D047309:Flavones / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D010578:Petroleum; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D018515:Plant Leaves / Q000737:chemistry
chemical_list: D047309:Flavones; D010578:Petroleum; D010936:Plant Extracts