Flavonol glycosides from Cephalocereus senilis.
A new flavonol tetraglycoside, together with two known flavonol glycosides, kaempferol 7-rhamnoside and kaempferol 3-rhamnosyl(1-->6) galactoside-7-rhamnoside, were isolated from fresh plant material of Cephalocereus senilis. The structure of the new compound was established as kaempferol 3-O-beta-D-glucopyranosyl(1-->2)-O-[alpha-L-rhamnopyranosyl (1-->6)]-beta-D-galactopyranoside-7-O-alpha-L-rhamnopyranoside based on spectroscopic data. The whole plant flavonoid chemistry was strikingly different from that found previously in chitin-treated cell suspension cultures of the same plant.
Liu
Q
Q
Department of Botany, University of Texas at Austin 78713.
Liu
M
M
Mabry
T J
TJ
Dixon
R A
RA
D002240:Carbohydrate Sequence; D005419:Flavonoids / Q000302:isolation & purification*; D044948:Flavonols; D006027:Glycosides / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D010944:Plants / Q000737:chemistry*
D005419:Flavonoids; D044948:Flavonols; D006027:Glycosides