title: Secondary metabolites from Asperula lutea subsp. rigidula.
abstract: From the aerial parts of Asperula lutea subsp. rigidula (Halacsy) Ehrend., an endemic plant of south-eastern Greece, nine known compounds, beta-sitosterol, geniposidic acid, deacetyl-asperuloside, scandoside, chlorogenic acid, quercetin, hyperin, isoquercitrin and rutin, were isolated. From the analysis of a non polar fraction of the methanolic extract by means of GC and GC-MS, eighteen compounds were identified, mainly esters of fatty acids. The major components were the ethyl esters ofpalmitic acid (32.7%), linolenic acid (20.1%) and linoleic acid (10.5%).
authors.affiliation: Department of Pharmacognosy and Chemistry of Natural Products, School of Pharmacy, University of Athens, Panepistimioupoli Zographou, 157 71 Athens, Greece. tzakou@pharm.uoa.gr
authors.forename: Olga
authors.initials: O
authors.lastname: Tzakou
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Lempesis
authors.forename: Anargyros
authors.initials: A
authors.lastname: Loukis
mesh_terms: D005227:Fatty Acids / Q000032:analysis; D005419:Flavonoids / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D019666:Rubiaceae / Q000737:chemistry / Q000378:metabolism*
chemical_list: D005227:Fatty Acids; D005419:Flavonoids