title: Kaempferol glycosides from Siparuna apiosyce.
abstract: The kaempferol derivative 3,7-di-O-methyl-4'-O-beta-[alpha rhamnosyl (1 --> 6)]-glucopyranoside (siparunoside) was isolated from the leaves of Sparuna apiosyce. Its structure was established by extensive NMR studies. The alkaloids reticuline and liriodenine were also isolated from the leaves along with the kaempferol derivative tiliroside. Benzylisoquinoline alkaloids were isolated from the wood (liriodenine) and wood bark (liriodenine, laurotetanine, N-methyl-laurotetanine, reticuline), together with a mixture of cis and trans-N-feruloyltyramines. 3,7,4'-tri-O-methylkaempferol was isolated from all organs.
authors.affiliation: Núcleo de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, RJ, Brazil. ggleitao@nppn.ufrj.br
authors.forename: G G
authors.initials: GG
authors.lastname: Leitão
authors.forename: S S
authors.initials: SS
authors.lastname: Soares
authors.forename: T D
authors.initials: TD
authors.lastname: Brito
authors.forename: F
authors.initials: F
authors.lastname: Delle Monache
mesh_terms: D002851:Chromatography, High Pressure Liquid; D004187:Disaccharides / Q000737:chemistry / Q000302:isolation & purification*; D005419:Flavonoids; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D044949:Kaempferols; D019770:Lauraceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D018515:Plant Leaves / Q000737:chemistry; D011794:Quercetin / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D004187:Disaccharides; D005419:Flavonoids; D006027:Glycosides; D044949:Kaempferols; C420463:siparunoside; C006552:kaempferol; D011794:Quercetin