title: A new kaempferol diglycoside from Datura suaveolens Humb. & Bonpl. ex. Willd.
abstract: A new flavonol glycoside, kaempferol 3-O-alpha-L-arabinopyranosyl-7-O-beta-D-glucopyranoside (1), has been isolated from methanol extract of leaves of Datura suaveolens (Solanaceae), along with six other known compounds, which include kaempferol 3-O-alpha-L-arabinopyranoside (2), 3-phenyl lactic acid, 3-(3-indolyl) lactic acid, and its methyl ester, physalindicanol A and physalindicanol B. The structural elucidation of 1 and characterization of the known compounds are based on detailed spectral analysis (ESI-FTICR-MS and 2D-NMR). This is the first report of isolation of these compounds from this plant.
authors.affiliation: Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, India.
authors.forename: A
authors.initials: A
authors.lastname: Sajeli Begum
authors.forename: Mahendra
authors.initials: M
authors.lastname: Sahai
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Fujimoto
authors.forename: K
authors.initials: K
authors.lastname: Asai
authors.forename: Kathrin
authors.initials: K
authors.lastname: Schneider
authors.forename: Graeme
authors.initials: G
authors.lastname: Nicholson
authors.forename: Roderich
authors.initials: R
authors.lastname: Suessmuth
mesh_terms: D032302:Datura / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D044949:Kaempferols / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D009904:Optical Rotation; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D018515:Plant Leaves / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D006027:Glycosides; D044949:Kaempferols; D010936:Plant Extracts