Abstract:
Two new saponins, bipinnatifidusoside F
1(Ⅻ) and F
2(ⅩⅢ), were isolated along with eleven known saponins from the dried leaves of Panax japonicus var.bipinnatifidus(Seem.)Wu et Feng collected in the Range of Qinling Mountains in China. By spectrometric analysis(FAB-MS,
1H and
13CNMR,
1H-
1H COSY), their structures were elucidated as dammar-25(26)-ene-3β, 12β, 20(S), 2ξ- tetraol-(20-O-β-D-glucopyranosyl)-3-O-β-D-glucopyranosyl(1-2)-β-D-glucopyranoside(bipinnatifidusoside F
1) and dammar-22(23) ene-3β,12β, 20(S), 24ξ-tetraol-(20-O-β-D-glucopyranosyl)-3-O-β-D-glucopyranosyl(1-2)-β-D-glucopyranoside (bipinnatifidusoside F
2), respectively. The known saponins were identified as ginsenoside F
1,F
2,F
3,Rg
2,Re,Rd,Rb
1,Rb
3, 24(S)-pseudoginsenoside F
11,panasenoside and majoroside F
1.Compared with bipinnatifidusoside F
2,majoroside F
3 was corrected as dammar-22 (23)-ene-3β,12β,20(S), 24ξ-tetraol-(20-O-β-D-glucopyranosyl)-3-O-β-D-glucopyranoside.