Gao H, Zhang X, Wang N-L, Liu H-W, Zhang Q-H, Song S-S, Yu Y, Yao X-S
School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, China.
J Asian Nat Prod Res. 2007 Mar;9(2):175-82. doi: 10.1080/10286020500480787.
A new triterpenoid saponin, named stauntoside A (1) along with four known saponins (2,3,4,5) was isolated from Stauntonia chinensis DC., (Lardizabalaceae). Their structures were elucidated by spectroscopic analysis and chemical methods as 3-O-alpha-L-arabinopyranosyl-30-norhederagenin -28-O-beta-D-glucopyranosyl-(1 --> 6)-beta-D-glucopyranosyl ester (1), 3-O-alpha-L-arabinopyranosyl-30- norhederagenin-28-O-alpha-L-rhamnopyranosyl-(1 --> 4)-beta-D-glucopyranosyl-(1 --> 6)-beta-D-glucopyranosyl ester (2), 3-O-alpha-L-rhamnopyranosyl-(1 --> 2)-alpha-L-arabinopyranosyl-30-norhederagenin-28-O-alpha-L- rhamnopyranosyl-(1 --> 4)-beta-D-glucopyranosyl-(1 --> 6)-beta-D-glucopyranosyl ester (3), 3-O-alpha-L- arabinopyranosyl-hederagenin-28-O-alpha-L-rhamnopyranosyl-(1 --> 4)-beta-D-glucopyranosyl-(1 --> 6)-beta-D- glucopyranosyl ester (4), 3-O-alpha-L-rhamnopyranosyl-(1 --> 2)-alpha-L-arabinopyranosyl-hederagenin -28-O-alpha-L-rhamnopyranosyl-(1 --> 4)-beta-D-glucopyranosyl-(1 --> 6)-beta-D-glucopyranosyl ester (5). The (1)H and (13)C NMR data for Glycoside L-G1 or Sinofoside A are paradox in the reported before. Thus, the structure elucidation of saponin 2, known as Glycoside L-G1 or Sinofoside A, was discussed and the unambiguous assignments were given.
从木通科植物中华野木瓜(Stauntonia chinensis DC.)中分离得到了一种新的三萜皂苷,命名为野木瓜皂苷A(1)以及四种已知皂苷(2、3、4、5)。通过光谱分析和化学方法确定它们的结构分别为3-O-α-L-阿拉伯吡喃糖基-30-降常春藤皂苷元-28-O-β-D-吡喃葡萄糖基-(1→6)-β-D-吡喃葡萄糖基酯(1)、3-O-α-L-阿拉伯吡喃糖基-30-降常春藤皂苷元-28-O-α-L-鼠李吡喃糖基-(1→4)-β-D-吡喃葡萄糖基-(1→6)-β-D-吡喃葡萄糖基酯(2)、3-O-α-L-鼠李吡喃糖基-(1→2)-α-L-阿拉伯吡喃糖基-30-降常春藤皂苷元-28-O-α-L-鼠李吡喃糖基-(1→4)-β-D-吡喃葡萄糖基-(1→6)-β-D-吡喃葡萄糖基酯(3)、3-O-α-L-阿拉伯吡喃糖基-常春藤皂苷元-28-O-α-L-鼠李吡喃糖基-(1→4)-β-D-吡喃葡萄糖基-(1→6)-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-常春藤皂苷元-28-O-α-L-鼠李吡喃糖基-(1→4)-β-D-吡喃葡萄糖基-(1→6)-β-D-吡喃葡萄糖基酯(5)。糖苷L-G1或中华皂苷A的氢谱和碳谱数据与之前报道的存在矛盾。因此,对已知为糖苷L-G1或中华皂苷A的皂苷2的结构解析进行了讨论并给出了明确的归属。