A new ocotillol-type triterpenoid saponin from red American ginseng.
A new ocotillol-type triterpenoid saponin, named 20(R)-pseudoginsenoside F(11) (1), was isolated along with pseudoginsenoside F(11) (2) from red American ginseng. The structure of the new saponin was elucidated as 6-O-[α-L-rhamnopyranosyl-(1 → 2)-β-D-glucopyranosyl]-dammar-20R, 24R-epoxy-3β, 6α, 12β, 25-tetraol by a combination analysis of NMR and mass spectrometry. The complete signal assignments of the two compounds were carried out by means of 2-D NMR spectral analysis.
Institute of Frontier Medical Science, Jilin University, Changchun 130021, China.
Jin-Ping
JP
Liu
Fang
F
Wang
Ping-Ya
PY
Li
Dan
D
Lu
D036145:Ginsenosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D005894:Panax / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry; D012503:Saponins / Q000302:isolation & purification*
D036145:Ginsenosides; C079995:Panax quinquefolium saponin; D012503:Saponins; C524540:ocotillol; C413985:pseudoginsenoside F11