Six new triterpene glycosides (1—6), together with 11 known ones (7—17), have been isolated from a glycoside-enriched fraction prepared from the tubers of Anemone coronaria L. (Ranunculaceae). On the basis of extensive spectroscopic analysis, including 2D NMR data, and the results of hydrolytic cleavage, the structures of 1—6 were determined to be 3β-[(O-β-D-glucopyranosyl-(1→4)-O-[α-L-rhamnopyranosyl-(1→2)]-α-L-arabinopyranosyl)oxy]-2β,23-dihydroxyolean-12-en-28-oic acid (1), 3β-[(O-β-D-glucopyranosyl-(1→3)-O-α-L-rhamnopyranosyl-(1→2)-O-[β-D-glucopyranosyl-(1→4)]-α-L-arabinopyranosyl)oxy]-23-hydroxyolean-12-en-28-oic acid (2), 3β-[(O-β-D-glucopyranosyl-(1→4)-O-[α-L-rhamnopyranosyl-(1→2)]-α-L-arabinopyranosyl)oxy]-23-hydroxyolean-12-en-28-oic acid O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester (3), 3β-[(O-β-D-glucopyranosyl-(1→4)-O-[α-L-rhamnopyranosyl-(1→2)]-α-L-arabinopyranosyl)oxy]-2β,23-dihydroxyolean-12-en-28-oic acid O-α-L-rhamnopyranosyl-(1→4)-O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester (4), 3β-[(O-β-D-glucopyranosyl-(1→4)-O-[α-L-rhamnopyranosyl-(1→2)]-α-L-arabinopyranosyl)oxy]-2β-hydroxyolean-12-en-28-oic acid O-α-L-rhamnopyranosyl-(1→4)-O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester (5), and 3β-[(O-β-D-glucopyranosyl-(1→4)-O-[α-L-rhamnopyranosyl-(1→2)]-α-L-arabinopyranosyl)oxy]-23-hydroxyolean-18-en-28-oic acid O-α-L-rhamnopyranosyl-(1→4)-O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl ester (6), respectively. Furthermore, the isolated compounds were evaluated for their cytotoxic activity against HSC-2 cells.
从毛蕊花块茎提取的富含糖苷的分馏物中,分离出了六种新的三萜糖苷(1—6),以及11种已知的糖苷(7—17)。通过广泛的光谱分析,包括二维核磁共振(NMR)数据,以及
水解裂解的结果,确定了1—6的结构为:3β-[(O-β-
D-
葡萄糖吡喃糖基-(1→4)-O-[α-
L-
鼠李糖吡喃糖基-(1→2)]-α-
L-
阿拉伯糖吡喃糖基)氧]-2β,23-二羟基olean-12-烯-28-
甲酸 (1),3β-[(O-β-
D-
葡萄糖吡喃糖基-(1→3)-O-α-
L-
鼠李糖吡喃糖基-(1→2)-O-[β-
D-
葡萄糖吡喃糖基-(1→4)]-α-
L-
阿拉伯糖吡喃糖基)氧]-23-羟基olean-12-烯-28-
甲酸 (2),3β-[(O-β-
D-
葡萄糖吡喃糖基-(1→4)-O-[α-
L-
鼠李糖吡喃糖基-(1→2)]-α-
L-
阿拉伯糖吡喃糖基)氧]-23-羟基olean-12-烯-28-
甲酸 O-β-
D-
葡萄糖吡喃糖基-(1→6)-β-
D-
葡萄糖吡喃
糖酯 (3),3β-[(O-β-
D-
葡萄糖吡喃糖基-(1→4)-O-[α-
L-
鼠李糖吡喃糖基-(1→2)]-α-
L-
阿拉伯糖吡喃糖基)氧]-2β,23-二羟基olean-12-烯-28-
甲酸 O-α-
L-
鼠李糖吡喃糖基-(1→4)-O-β-
D-
葡萄糖吡喃糖基-(1→6)-β-
D-
葡萄糖吡喃
糖酯 (4),3β-[(O-β-
D-
葡萄糖吡喃糖基-(1→4)-O-[α-
L-
鼠李糖吡喃糖基-(1→2)]-α-
L-
阿拉伯糖吡喃糖基)氧]-2β-羟基olean-12-烯-28-
甲酸 O-α-
L-
鼠李糖吡喃糖基-(1→4)-O-β-
D-
葡萄糖吡喃糖基-(1→6)-β-
D-
葡萄糖吡喃
糖酯 (5),和3β-[(O-β-
D-
葡萄糖吡喃糖基-(1→4)-O-[α-
L-
鼠李糖吡喃糖基-(1→2)]-α-
L-
阿拉伯糖吡喃糖基)氧]-23-羟基olean-18-烯-28-
甲酸 O-α-
L-
鼠李糖吡喃糖基-(1→4)-O-β-
D-
葡萄糖吡喃糖基-(1→6)-β-
D-
葡萄糖吡喃
糖酯 (6)。此外,分离出的化合物还被评估了对HSC-2细胞的细胞毒性活性。