title: Flavonoid glycosides and isoquinolinone alkaloids from Corydalis bungeana.
abstract: Two flavonol O-glycosides identified as the 3-O-alpha-arabinopyranosyl(1'''-->6'')-beta-glucopyranoside 7-O-beta-glucopyranosides of kaempferol and quercetin were isolated from the whole plant of Corydalis bungeana Turcz. together with eight known flavonol O-glycosides. Two isoquinolinone alkaloids were also obtained from the same source, including the new derivative, 6,7-methylenedioxy-2-(6-acetyl-2,3-methylenedioxybenzyl)-1(2H)-isoquinolinone. The structures were determined by spectroscopic methods (NMR and high-resolution MS).
authors.affiliation: Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, UK.
authors.forename: Chen
authors.initials: C
authors.lastname: Xie
authors.forename: Nigel C
authors.initials: NC
authors.lastname: Veitch
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Houghton
authors.forename: Monique S J
authors.initials: MS
authors.lastname: Simmonds
mesh_terms: D000470:Alkaloids / Q000032:analysis*; D031311:Corydalis / Q000737:chemistry*; D005419:Flavonoids / Q000032:analysis*; D006027:Glycosides / Q000032:analysis*; D007546:Isoquinolines / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry
chemical_list: D000470:Alkaloids; D005419:Flavonoids; D006027:Glycosides; D007546:Isoquinolines; D010936:Plant Extracts