title: New flavonol glycosides from the leaves of Caragana brachyantha.
abstract: Two new flavonol glycosides, brachysides C and D, together with three known flavonol glycosides, were isolated from the leaves of Caragana brachyantha. The structures of brachysides C and D were elucidated on the basis of detailed spectroscopic analysis as quercetin 5-O-[α-L-rhamnopyranosyl-(1 → 6)-β-D-glucopyranoside]-7-O-[α-L-rhamnopyranoside] and quercetin 5-O-[α-L-rhamnopyranosyl-(1 → 6)-β-D-glucopyranoside]-7-O-[α-L-rhamnopyranoside]-4'-O-[α-L-rhamnopyranoside], respectively. The presence of flavonol tetra- and triglycosides bearing a sugar moiety at position 5 was the first report from this genus Caragana.
authors.affiliation: a Department of Pharmacognosy , College of Pharmacy, King Saud University , PO Box 2457, Riyadh 11451 , Saudi Arabia.
authors.forename: Shagufta
authors.initials: S
authors.lastname: Perveen
authors.forename: Areej Mohammad
authors.initials: AM
authors.lastname: Al-Taweel
authors.forename: Nawal
authors.initials: N
authors.lastname: Al-Musayeib
authors.forename: Ghada Ahmed
authors.initials: GA
authors.lastname: Fawzy
authors.forename: Afsar
authors.initials: A
authors.lastname: Khan
authors.forename: Rashad
authors.initials: R
authors.lastname: Mehmood
authors.forename: Abdul
authors.initials: A
authors.lastname: Malik
mesh_terms: D032602:Caragana / Q000737:chemistry*; D044948:Flavonols / Q000737:chemistry* / Q000302:isolation & purification; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry*
chemical_list: D044948:Flavonols; D006027:Glycosides; C000598614:brachyside C; C000598613:brachyside D
keywords: Caragana brachyantha; brachysides C-D; flavonol glycosides