Dammarane saponins from Panax ginseng.
From the dried roots of Panax ginseng two new minor dammarane saponins named koryoginsenoside-R1 and -R2 were isolated, along with fourteen known saponins. On the basis of spectral and chemical evidence, the structure of the new saponins were elucidated as 6-O-[trans butenoyl-(1-->6)-beta-D-glucopyranosyl]-20-O-beta-D- glucopyranosyl dammar-24-en-3 beta,6 alpha,12 beta,20(S)-tetrol and 3-O-[beta-D-glucopyranosyl-(1-->2)-beta-D-glucopyranosyl]-20-O-[beta-D- glucopyranosyl-(1-->6)-beta-D-glucopyranosyl] dammar-22-en-3 beta,12 beta, 20(S),- 25-tetrol, respectively.
Laboratory of Phytochemistry, Kunming Institute of Botany, Chinese Academy of Sciences, China.
D S
DS
Kim
Y J
YJ
Chang
U
U
Zedk
P
P
Zhao
Y Q
YQ
Liu
C R
CR
Yang
D002240:Carbohydrate Sequence; D036145:Ginsenosides; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D013058:Mass Spectrometry; D008969:Molecular Sequence Data; D005894:Panax / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*
D036145:Ginsenosides; D012503:Saponins; C097443:koryoginsenoside R1; C097444:koryoginsenoside R2