Kohda H, Tanaka S, Yamaoka Y
Institute of Pharmaceutical Sciences, Hiroshima Univeristy School of Medicine, Japan.
Chem Pharm Bull (Tokyo). 1990 Dec;38(12):3380-3. doi: 10.1248/cpb.38.3380.
From the leaves of Acanthopanax hypoleucus Makino (Araliaceae), five triterpenoidal saponins, having oleanolic acid and hederagenin as sapogenins, were isolated. On the basis of chemical and spectral data, the structures of two new saponins, named hypoleucosides A (1), and B (5) were elucidated as follows: 1; 3-O-beta-D-glucopyranosyl 11 alpha-methoxy-oleanolic acid 28-O-beta-D-glucopyranosyl ester, 5; 3-O-beta-D-glucopyranosyl-(1----2)-alpha-L-arabinopyranosyl-(1---- 4)-beta-D-glucopyranosyl oleanolic acid 28-O-beta-D-glucopyranosyl-(1----6)-beta-D-glucopyranosyl ester.
从白背叶五加（五加科）的叶子中，分离出了五种以齐墩果酸和常春藤皂苷元为皂苷元的三萜皂苷。根据化学和光谱数据，阐明了两种新皂苷的结构，命名为白背叶苷A（1）和白背叶苷B（5），如下所示：1；3 - O - β - D - 吡喃葡萄糖基11α - 甲氧基 - 齐墩果酸28 - O - β - D - 吡喃葡萄糖基酯，5；3 - O - β - D - 吡喃葡萄糖基 -（1→2）- α - L - 阿拉伯吡喃糖基 -（1→4）- β - D - 吡喃葡萄糖基齐墩果酸28 - O - β - D - 吡喃葡萄糖基 -（1→6）- β - D - 吡喃葡萄糖基酯。
