| dc.description.abstract | Six flavonoid compounds, kaempferol (1), quercetin (2), acacetin (3),
quercetin-3-O-?-D-glucopyranoside (4), kaempferol-3-O-?-D-glucopyranoside
(5), and isorhamnetin-3-O-?-D-glucopyranoside (6), were isolated from the
methanol extract of the Lygodium microphyllum herb. The chemical structures of
compounds 1-6 were identified on the basis of spectroscopic evidence and
comparison with previously reported spectral data. Compounds 1-6 were isolated
for first time from this plant. Their antioxidant activity against DPPH (2,2-
Diphenyl-1-picrylhydrazyl) was evaluated. Among the compounds, quercetin (2)
showed high antioxidant activity with IC50 values of 6.94 ± 0.03 ?g/mL. | |
