title: Echiofruzine, a novel naringenin diglycoside from Echiochilon fruticosum growing in Tunisia.
abstract: The aerial parts of the Tunisian plant Echiochilon fruticosum yielded a novel flavonol diglycoside: naringenin-5-O-beta-D-glycopyranoside-3-O-alpha-L-rhamnopyranoside, named Echiofruzine (1), together with the known compounds vomifoliol-9-O-beta-D-glucopyraroside (2), 1-oxo-alpha-ionyl-9-O-beta-D-glucopyranoside (3) and 1-O-[beta-D-xylopyranosyl(1 --> 6)-beta-D-glucopyranosyl] eugenol (4), described for the first time in the indicated plant. The structures of the four isolated compounds were established on the basis of chemical and spectroscopic evidence.
authors.affiliation: Faculté des Sciences de Monastir, Laboratoire de Chimie des Substances Naturelles et de Synthèse Organique (UR/99/12-26), 5019 Monastir, Tunisia.
authors.forename: Afifa
authors.initials: A
authors.lastname: Bergaoui
authors.forename: Saoussen
authors.initials: S
authors.lastname: Hammami
authors.forename: Hichem
authors.initials: H
authors.lastname: Ben Jannet
authors.forename: Zine
authors.initials: Z
authors.lastname: Mighri
mesh_terms: D028082:Boraginaceae / Q000737:chemistry*; D044948:Flavonols / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D009904:Optical Rotation; D035261:Plant Components, Aerial / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D014416:Tunisia
chemical_list: D044948:Flavonols; D006027:Glycosides; D010936:Plant Extracts