The glycosidic fraction from the dried roots of Panax notoginseng (BURK.) F. H. CHEN was found to show protective effect on liver injury induced by D-galactasamine and lipopolysaccharide. From the glycosidic fraction with hepatoprotective effect, nine new dammarane-type triterpene oligoglycosides, notoginsenosides-A, -B, -C, -D, -E, -G, -H, -I, and -J and an acetylenic fatty acid glycoside, notoginsenic acid β-sophoroside, were isolated together with fourteen known dammarane-type triterpene oligoglycosides. The structures of notoginsenosides-A, -B, -C, and -D were determined on the basis of chemical and physicochemical evidence, which included the chemical correlation with ginsenoside-Rb, using photosensitized oxygenation, as follows: notoginsenoside A; 3-O-[β-D-glucopyranosyl(1→2)-β-D-glucopyranosyl]-20-O-[β-D-glucopyranosyl(1→6)-β-D-glucopyranosyl] 3β,12β,20(S),25-tetrahydroxydammar-23-ene, B; 3-O-[β-D-glucopyranosyl(1→2)-β-D-glucopyranosyl]-20-O-[β-D-glucpyranosyl(1→6)-β-D-glucopyranosyl] 3β,12β,20(S)-trihydroxydammar-25-en-24-one C; 3-O-[β-D-glucopyranosyl(1→2)-β-D-glucopyranosyl]-20-O-[β-D-glucopyranosyl(1→6)-β-D-glucopyranosyl] 3β,12β,20(S)-trihydroxy-24 ξ-hydroperoxydammar-25-ene , and D; 3-O-[β-D-xylopyranosyl(1→2)-β-D-glucopyranosyl(1→2)-β-D-glucopyranosyl]-20-O-[β-D-xylopyranosyl(1→6)-β-D-glucopyranosyl(1→6)-β-D-glucopyranosyl] 20(S)-protopanaxadiol, respectively.
Panax notoginseng, bioactive saponin, notoginsenoside, liver injury protective, dammarane-type triterpene oligoglycoside, notoginseng
NCBI PubMed ID: 9214709Publication DOI: 10.1248/cpb.45.1039Journal NLM ID: 0377775Publisher: Pharmaceutical Society Of Japan
Institutions: Kyoto Pharmaceutical University, Kyoto, Japan
Methods: 13C NMR, 1H NMR, IR, FAB-MS, acid hydrolysis, GLC, chemical methods, biological assays, methanolysis, HPLC, extraction