Antioxidant activity and two new flavonoids from Washingtonia filifera.
Two new flavonoids, 8-hydroxyisoscoparin (1) and luteolin 7-O-glucoside 4''-sulfate (2), along with eight known flavonoids, including luteolin 7-O-glucoside 2''-sulfate, were isolated and identified from Washingtonia filifera. All compounds were characterized by (1)H-NMR, (13)C-NMR, CI-MS, FABMS and UV. The antioxidant activities of various W. filifera extracts were determined.
El-Sayed
N H
NH
Department of Tanning Materials and Protein Chemistry, National Research Centre, El-Tahrir St., Dokki, Cairo, Egypt. nabil_17@yahoo.com
Ammar
N M
NM
Al-Okbi
S Y
SY
El-Kassem
L T Abou
LT
Mabry
T J
TJ
D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D028023:Arecaceae / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013056:Spectrophotometry, Ultraviolet
C508661:8-hydroxyisoscoparin; D000975:Antioxidants; D005419:Flavonoids; C508660:luteolin 7-O-glucoside 4''-sulfate