[来自中华野木瓜的野木瓜苷YM10和YM12的结构]
[The structures of yemuoside YM10 and YM12 from Stauntonia chinensis].
作者信息
Wang H B, Yu D Q, Liang X T, Watanabe N, Tamai M, Omura S
出版信息
Yao Xue Xue Bao. 1989;24(6):444-51.
Two new nortriterpenoid saponins, named yemuoside YM10 (I) and YM12 (II), were isolated from Stauntonia chinensis Decne. A new prosaponin (VI) was isolated from the cleavage of ester-glycoside linkage. Their chemical structures were elucidated by means of chemical and spectrometric analysis. Yemuoside YM10 (I): C58H92O25, a white powder, mp 215-219 degrees C (dec), [alpha]D20-4.41 degrees (c 0.272, CH3OH). Its structure was found to be 28-O-alpha-L-rhamnopyranosyl- (1----4) -beta-D-glucopyranosyl- (1----6) -beta-D-glucopyranosyl ester of 3-O-alpha-L-rhamnopyranosyl-(1----2)-alpha-L-arabinopyranosyl-30-+ ++norolean-12, 20 (29) -dien-28-oic acid. Yemuoside YM12 (II): C52H82O21, a white powder, mp 200-204 degrees C (dec.), [alpha]D20 + 10.12 degrees (c 0.346, CH3OH). Its structure was found to be 28-O-beta-D-glucopyranosyl- (1----6) -beta-D-glucopyranosyl ester of 3-O-alpha-L-rhamnopyranosyl- (1----2) -alpha-L-arabinopyranosyl-30-norolean-12, 20 (29)-dien-28-oic acid. Prosaponin (VI): C40H62O11, a white powder, mp 243-246 degrees C (dec.), [alpha]D22 + 12.13 degrees (c 0.128, CH3OH). Its structure was found to be 3-O-alpha-L-rhamnopyranosyl- (1----2)-alpha-L-arabinopyranosyl-30-norolean-12, 20 (29)-dien-28-oic acid.
从中华野木瓜（Stauntonia chinensis Decne.）中分离得到了两种新的三萜皂苷，分别命名为野木瓜苷YM10（I）和YM12（II）。从酯糖苷键的裂解产物中分离得到了一种新的原皂苷（VI）。通过化学和光谱分析阐明了它们的化学结构。野木瓜苷YM10（I）：C58H92O25，白色粉末，熔点215 - 219℃（分解），[α]D20 - 4.41°（c 0.272，CH3OH）。其结构为3 - O - α - L - 鼠李糖基 - （1→4） - β - D - 葡萄糖基 - （1→6） - β - D - 葡萄糖基酯的3 - O - α - L - 鼠李糖基 - （1→2） - α - L - 阿拉伯糖基 - 30 - 去甲齐墩果 - 12,20（29） - 二烯 - 28 - 酸。野木瓜苷YM12（II）：C52H82O21，白色粉末，熔点200 - 204℃（分解），[α]D20 + 10.12°（c 0.346，CH3OH）。其结构为3 - O - α - L - 鼠李糖基 - （1→2） - α - L - 阿拉伯糖基 - 30 - 去甲齐墩果 - 12,20（29） - 二烯 - 28 - 酸的28 - O - β - D - 葡萄糖基 - （1→6） - β - D - 葡萄糖基酯。原皂苷（VI）：C40H62O11，白色粉末，熔点243 - 246℃（分解），[α]D22 + 12.13°（c 0.128，CH3OH）。其结构为3 - O - α - L - 鼠李糖基 - （1→2） - α - L - 阿拉伯糖基 - 30 - 去甲齐墩果 - 12,20（29） - 二烯 - 28 - 酸。
Zotero 插件