113558-13-7Relevant articles and documents
SEVEN PRENYLATED FLAVONOL GLYCOSIDES FROM TWO EPIMEDIUM SPECIES
Fukai, Toshio,Nomura, Taro
, p. 259 - 266 (2007/10/02)
Five new flavonol glycosides, ikarisosides B, C, D, E and F were isolated from the roots of Epimedium grandiflorum and their structures elucidated as 8-prenylkaempferol-3-O-β-glucosyl (1->2)-α-rhamnoside, 8-prenylkaempferol 3-O-β-glucosyl(1->2)-α-rhamnoside>-7-O-β-glucoside, 8-prenylkaempferol 3-O-α-(4'' acetyl) rhamnoside, 6'',6''-dimethylpyrano(2'',3'':7,8) kaempferol 3-O-α-rhamnoside and 8-prenylkaempferol 3-O-β-xylosyl(1->2)-α-rhamnoside, respectively.Ikarisoside A was also isolated from the same material and confirmed as the hydrolysis product of epimedoside A.From the root E. sempervirens, ikarisosides A, C and E, as well as icarisid II, were isolated.Ikarisoside A and icarisid II were isolated for the first time as natural products.Key Word Index - Epimedium grandiflorum; E. sempervirens; Berberidaceae; ikarisosides A, B, C, D, E and F; icarisid II; prenylated flavonol glycosides; FABMS; 13C NMR; 1H NMR.