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.
Kim
D S
DS
Laboratory of Phytochemistry, Kunming Institute of Botany, Chinese Academy of Sciences, China.
Chang
Y J
YJ
Zedk
U
U
Zhao
P
P
Liu
Y Q
YQ
Yang
C R
CR
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