The carbohydrate sequences of threenewsaponin, saponin C2(1a), D (2a), and G (3a), obtained from the leaves of Hoveniadulcis Thunb. (Rhamnaceae), have been identified, mainly by 13C n.m.r. spectroscopy, and the full molecular structures of these saponins have been assigned as 3-O-(2-O-α-L-rhamnopyranosyl-3-O-β-D-glucopyranosyl -α-L-arabinopyranosyl)jujubogenin, 3-O-(2-O-α-L-rhamnopyranosyl-β-D-
从Hovenia dulcis Thunb的叶子中获得的三种新皂苷的碳水化合物序列,即皂苷C 2(1a),D(2a)和G(3a)。(鼠李科),已经确定,主要是由13 C NMR光谱和这些皂甙的整个分子结构已经被指定为3- ø - (2- ö -α-大号-rhamnopyranosyl -3- ö -β- d -吡喃葡萄糖基-α-大号-arabinopyranosyl)jujubogenin,3- ø - (2- ö -α-大号-rhamnopyranosyl-β- d吡喃葡萄糖基)-20- Ô -α-大号-rhamnopyranosyljujubogenin和3- ö -β- d吡喃葡萄糖基-20- ö -α-大号-rhamnopyranosyljujubogenin,分别从附加的化学和光谱证据。