Flavonol glycosides from Calotropis gigantea.
Besides isolation and characterization of isorhamnetin-3-O-rutinoside, isorhamnetin-3-O-glucopyranoside and taraxasteryl acetate, a new flavonol trisaccharide was isolated from the aerial parts of Calotropis gigantea, and its structure was established as isorhamnetin-3-O-[2-O-beta-D-galactopyranosyl-6-O-alpha-L-rhamnopy ranosyl]- beta-D-glucopyranoside by a combination of fast atom bombardment mass spectroscopy, 1H and 13C NMR spectra and some chemical degradations.
Indian Institute of Chemical Biology, Jadavpur, Calcutta.
S
S
Sen
N P
NP
Sahu
S B
SB
Mahato
D002240:Carbohydrate Sequence; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D044948:Flavonols; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*
D005419:Flavonoids; D044948:Flavonols; D006027:Glycosides