来自菲律宾番龙眼的常春藤皂苷元糖苷。
Hederagenin glycosides from Pometia eximia.
作者信息
Jayasinghe L, Shimada H, Hara N, Fujimoto Y
机构信息
Natural Product Chemistry Division, Institute of Fundamental Studies, Kandy, Sri Lanka.
出版信息
Phytochemistry. 1995 Oct;40(3):891-7. doi: 10.1016/0031-9422(95)00360-j.
Seven new saponins, all glycosides of hederagenin (3 beta,23- dihydroxyolean-12-en-28-oic acid), were isolated from the stem of Pometia eximia along with hederagenin and two known saponins. Their structures were established as 28-O-beta-D-apiosyl(1-->2)-beta-D-glucopyranosyl-, 3-O-alpha-L- arabinofuranosyl(1-->3)[alpha-L-rhamnopyranosyl (1-->2)]-beta-D- xylopyranosyl-, 3-O-beta-D-apiosyl(1-->3)[alpha-L-rhamnopyranosyl-(1-->2)-beta-D- glucopyranosyl-, 3-O-alpha-L-arabinofuranosyl(1-->3)[alpha-L-rhamnopyranosyl- (1-->2)]-beta-L-arabinopyranosyl-, 3-O-beta-D-xylopyranosyl(1-->3)[alpha-L- rhamnopyranosyl(1-->2)]-alpha-L-arabinopyranosyl-, 3-O-beta-D-xylopyranosyl-(1-->3)[alpha-L-rhamnopyranosyl(1-->2)]-beta-D- glucopyranosyl-, 3-O-beta-D-galactopyranosyl(1-->3)[alpha-L-rhamnopyranosyl(1-->2)]-beta- D- glucopyranosyl-hederagenins.
从菲律宾番龙眼茎中分离出七种新的皂苷，均为常春藤皂苷元（3β，23 - 二羟基齐墩果-12-烯-28-酸）的糖苷，同时还分离出常春藤皂苷元和两种已知皂苷。它们的结构确定为28 - O - β - D - 芹菜糖基（1→2）-β - D - 吡喃葡萄糖基 - 、3 - O - α - L - 阿拉伯呋喃糖基（1→3）[α - L - 鼠李吡喃糖基（1→2）]-β - D - 吡喃木糖基 - 、3 - O - β - D - 芹菜糖基（1→3）[α - L - 鼠李吡喃糖基 - （1→2）-β - D - 吡喃葡萄糖基 - 、3 - O - α - L - 阿拉伯呋喃糖基（1→3）[α - L - 鼠李吡喃糖基 - （1→2）]-β - L - 阿拉伯吡喃糖基 - 、3 - O - β - D - 吡喃木糖基（1→3）[α - L - 鼠李吡喃糖基（1→2）]-α - L - 阿拉伯吡喃糖基 - 、3 - O - β - D - 吡喃木糖基 - （1→3）[α - L - 鼠李吡喃糖基（1→2）]-β - D - 吡喃葡萄糖基 - 、3 - O - β - D - 吡喃半乳糖基（1→3）[α - L - 鼠李吡喃糖基（1→2）]-β - D - 吡喃葡萄糖基常春藤皂苷元。
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