Bioactive Saponins and Glycosides. VIII. Notoginseng (1): New Dammarane-Type Triterpene Oligoglycosides, Notoginsenosides-A, -B, -C, and -D, from the Dried Root of Panax notoginseng (BURK.) F. H. CHEN.
作者:Masayuki YOSHIKAWA、Toshiyuki MURAKAMI、Takahiro UENO、Kenichi YASHIRO、Nobuko HIROKAWA、Nobutoshi MURAKAMI、Johji YAMAHARA、Hisashi MATSUDA、Reiko SAIJOH、Osamu TANAKA
DOI:10.1248/cpb.45.1039
日期:——
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-galactosamine 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-Rb1 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-tetrahydroxy-dammar-23-ene, B; 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-25-en-24-one, C; 3-O-[β-D-xylopyranosyl (1→2)-β-D-glucopyranosyl (1→2)-β-D-glucopyranosyl]-20-O-[β-D-glucopyranosyl (1→6)-β-D-glucopyranosyl] 3β, 12β, 20(S)-trihydroxydammar-24ξ-hydroperoxydammar-25-ene, and D; 3-O-[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.
研究发现,从三七(BURK. F. H. CHEN)的干燥根中提取的苷部分对D-半乳糖胺和脂多糖引起的肝损伤具有保护作用。从具有保肝作用的苷部分中,分离出九种新的达玛烷型三萜类低聚糖苷,即五味子苷-A、-B、-C、-D、-E、-G、-H、-I和-J,以及一种乙炔基脂肪酸苷,即五味子酸β-槐糖苷,还有十四种已知的达玛烷型三萜类低聚糖苷。根据化学和理化证据,包括利用光敏氧合与人参皂苷-Rb1 的化学相关性,确定了艽野苷-A、-B、-C 和-D 的结构如下:............:人参皂甙 A;3-O-[β-D-吡喃葡萄糖基(1→2)-β-D-吡喃葡萄糖基]-20-O-[β-D-吡喃葡萄糖基(1→6)-β-D-吡喃葡萄糖基] 3β,12β,20(S),25-四羟基-达玛-23-烯,B;3-O-[β-D-吡喃葡萄糖基(1→2)-β-D-吡喃葡萄糖基]-20-O-[β-D-吡喃葡萄糖基(1→6)-β-D-吡喃葡萄糖基] 3β、12β、20(S)-三羟基-25-烯-24-酮,C;3-O-[β-D-吡喃木糖基(1→2)-β-D-吡喃葡萄糖基(1→2)-β-D-吡喃葡萄糖基]-20-O-[β-D-吡喃葡萄糖基(1→6)-β-D-吡喃葡萄糖基]3β、12β、20(S)-三羟基达玛-24ξ-过氧达玛-25-烯,和 D;3-O-[β-D-吡喃葡萄糖基(1→2)-β-D-吡喃葡萄糖基]-20-O-[β-D-吡喃木糖基(1→6)-β-D-吡喃葡萄糖基(1→6)-β-D-吡喃葡萄糖基] 20(S)-原人参二醇。