A new acylated quercetin glycoside and other secondary metabolites from Helleborus foetidus.
A new acylated flavonol glycoside, quercetin 3-O-(2-trans-caffeoyl)-alpha-L-arabinopyranosyl-(1-->2)-beta-D-glucopyranoside (1), together with the known 25R,26-[(beta-D-glucopyranosyl)oxy]-22alpha-hydroxy-5beta-furostan-3-beta-yl O-alpha-l-rhamnopyranosyl-(1-->4)-beta-D-glucopyranoside (2), anemonin (3), beta-D-glucosyl-p-hydroxyphenylethyl alcohol (4), and 1-beta-O-caffeoyl-D-glucose (5) were isolated from Helleborus foetidus leaves and identified on the basis of detailed spectral analysis.
Dipartimento di Chimica Bioorganica e Biofarmacia, Università di Pisa, Via Bonanno 33, 56126, Pisa, Italy. Jose.Prieto@pharmacy.ac.uk
Jose M
JM
Prieto
Tiziana
T
Siciliano
Alessandra
A
Braca
D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification*; D039322:Helleborus / Q000737:chemistry*; D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D018515:Plant Leaves / Q000737:chemistry; D011794:Quercetin / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification
D006027:Glycosides; D007783:Lactones; D012503:Saponins; C511105:quercetin 3-O-(2-trans-caffeoyl)-alpha-L-arabinopyranosyl-(1-2)-beta-D-glucopyranoside; D011794:Quercetin