Kirmizigül S, Anil H, Rose M E
Ege University, Faculty of Science, Organic Chemistry Department, Bornova, Izmir, Turkey.
Phytochemistry. 1995 Jul;39(5):1171-4. doi: 10.1016/0031-9422(95)00106-h.
On the basis of spectroscopic and chemical methods, the structures of two new triterpenoid glycosides, transsylvanoside E and F, isolated from Cephalaria transsylvanica have been established as 3-O-[beta-D-xylopyranosyl (1-->3)-alpha-L-rhamnopyranosyl (1-->4)-beta-D-glucopyranosyl (1-->4)-beta-D-glucopyranosyl (1-->2)-beta-D-xylopyranosyl]-3 beta,23- dihydroxy delta 12-oleanen-28-carboxylic acid and 3-O-[beta-D-glucopyranosyl (1-->3)-alpha-L-rhamnopyranosyl (1-->4)-beta-D-xylopyranosyl]-28-O-[beta- D-glucopyranosyl (1-->4)-beta-D-glucopyranosyl]-3 beta,23-dihydroxy delta 12-oleanen- 28-carboxylic acid, respectively. A new proglycoside was isolated from the cleavage of the ester-glycoside linkage and it's structure characterized as 3-O-[beta-D-glucopyranosyl (1-->3)-alpha-L- rhamnopyranosyl (1-->4)-beta-D-xylopyranosyl]-3 beta,23-dihydroxy delta 12-oleanen-28-carboxylic acid.
基于光谱和化学方法，从特兰西瓦尼亚风铃草（Cephalaria transsylvanica）中分离出的两种新三萜糖苷，反式西尔瓦诺苷E和F的结构已分别确定为3 - O - [β - D - 吡喃木糖基（1→3）-α - L - 吡喃鼠李糖基（1→4）-β - D - 吡喃葡萄糖基（1→4）-β - D - 吡喃葡萄糖基（1→2）-β - D - 吡喃木糖基]-3β,23 - 二羟基Δ12 - 齐墩果烷 - 28 - 羧酸和3 - O - [β - D - 吡喃葡萄糖基（1→3）-α - L - 吡喃鼠李糖基（1→4）-β - D - 吡喃木糖基]-28 - O - [β - D - 吡喃葡萄糖基（1→4）-β - D - 吡喃葡萄糖基]-3β,23 - 二羟基Δ12 - 齐墩果烷 - 28 - 羧酸。从酯糖苷键的裂解产物中分离出一种新的前体糖苷，其结构表征为3 - O - [β - D - 吡喃葡萄糖基（1→3）-α - L - 吡喃鼠李糖基（1→4）-β - D - 吡喃木糖基]-3β,23 - 二羟基Δ12 - 齐墩果烷 - 28 - 羧酸。
