来自美岛茜树的三萜皂苷。
Triterpene saponins from Randia formosa.
作者信息
Sahpaz S, Gupta M P, Hostettmann K
机构信息
Institut de Pharmacognosie et Phytochimie, Université de Lausanne, Switzerland.
出版信息
Phytochemistry. 2000 May;54(1):77-84. doi: 10.1016/s0031-9422(00)00034-0.
Seven new triterpenoid saponins, randiasaponins I (1), II (2), III (3), IV (4), V (5), VI (6) and VII (7) as well as two known ones, ilexoside XXVII (8) and ilexoside XXXVII (9), were isolated from the methanolic extract of the leaves of Randia formosa. The structures of the new saponins were established as 3-O-alpha-L-arabinopyranosyl-3 beta,19 alpha,23-trihydroxyursa-12,20(30)-dien-28-oic acid 28-beta-D-glucopyranosyl ester (1), 3-O-beta-D-glucopyranosyl-(1-->3)-alpha-L-arabinopyranosyl rotundic acid (2), 3-O-beta-D-glucopyranosyl-(1-->3)-alpha-L-arabinopyranosyl pomolic acid 28-beta-D-glucopyranosyl ester (3), 3-O-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranosyl pomolic acid 28-beta-D-glucopyranosyl ester (4), 3-O-alpha-L-rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranosyl siaresinolic acid 28-beta-D-glucopyranosyl ester (5), 3-O-alpha-L-arabinopyranosyl ilexosapogenin A 28-beta-D-glucopyranosyl ester (6), and 3-O-beta-D-glucopyranosyl ilexosapogenin A 28-beta-D-glucopyranosyl ester (7), based on spectral and chemical evidence. Besides the saponins, two common flavonoids kaempferol 3-O-rutinoside and rutin were also isolated.
从山石榴叶的甲醇提取物中分离得到了7个新的三萜皂苷，即茜树皂苷I（1）、II（2）、III（3）、IV（4）、V（5）、VI（6）和VII（7），以及2个已知的皂苷，即冬青苷XXVII（8）和冬青苷XXXVII（9）。基于光谱和化学证据，确定新皂苷的结构分别为3 - O - α - L - 阿拉伯吡喃糖基 - 3β，19α，23 - 三羟基乌苏 - 12，20（30） - 二烯 - 28 - 酸28 - β - D - 吡喃葡萄糖基酯（1）、3 - O - β - D - 吡喃葡萄糖基 - （1→3） - α - L - 阿拉伯吡喃糖基车轮菊酸（2）、3 - O - β - D - 吡喃葡萄糖基 - （1→3） - α - L - 阿拉伯吡喃糖基坡模酸28 - β - D - 吡喃葡萄糖基酯（3）、3 - O - α - L - 鼠李吡喃糖基 - （1→2） - α - L - 阿拉伯吡喃糖基坡模酸28 - β - D - 吡喃葡萄糖基酯（4）、3 - O - α - L - 鼠李吡喃糖基 - （1→2） - α - L - 阿拉伯吡喃糖基蛇麻脂醇酸28 - β - D - 吡喃葡萄糖基酯（5）、3 - O - α - L - 阿拉伯吡喃糖基冬青皂苷元A 28 - β - D - 吡喃葡萄糖基酯（6）和3 - O - β - D - 吡喃葡萄糖基冬青皂苷元A 28 - β - D - 吡喃葡萄糖基酯（7）。除了皂苷外，还分离得到了两种常见的黄酮类化合物，即山柰酚3 - O - 芸香糖苷和芦丁。
Zotero 插件