Li Xiao-Juan, Wang Li, Xue Pei-Feng, Xie Hong-Xia, Wei Hui, Wang Jing
a School of Pharmacy, Inner Mongolia Medical University , Hohhot 010059 , China.
J Asian Nat Prod Res. 2015;17(3):224-31. doi: 10.1080/10286020.2014.998652. Epub 2015 Jan 6.
Four new furostanol glycosides were isolated from the flowers of Hosta plantaginea (Lam.) Aschers. On the basis of spectroscopic methods including 1D and 2D NMR experiments, their structures were elucidated as 26-O-β-d-glucopyranosyl-(25R)-22-O-methyl-5α-furostan-2α,3β,22ξ,26-tetrol 3-O-α-l-rhamnopyranosyl-(1 → 4)-O-β-d-xylopyranosyl-(1 → 3)-[O-β-d-glucopyranosyl-(1 → 2)]-O-β-d-glucopyranosyl-(1 → 4)-β-d-galactopyranoside (hostaplantagineoside A, 1), 26-O-β-d-glucopyranosyl-(25R)-5α-furostan-20(22)-ene-2α,3β,26-triol-3-O-β-d-glucopyranosyl-(1 → 2)-[O-β-d-xylopyranosyl-(1 → 3)]-O-β-d-glucopyranosyl-(1 → 4)-β-d-galactopyranoside (hostaplantagineoside B, 2), 26-O-β-d-glucopyranosyl-(25R)-5α-furostan-22(23)-ene-2α,3β,20α,26-tetraol-3-O-β-d-glucopyranosyl-(1 → 2)-[O-β-d-xylopyranosyl-(1 → 3)]-O-β-d-glucopyranosyl-(1 → 4)-O-β-d-galactopyranoside (hostaplantagineoside C, 3), 26-O-β-d-glucopyranosyl-(25R)-5α-furostan-20(22)-ene-2α,3β,26-triol-3-O-α-l-rhamnopyranosyl-(1 → 4)-O-β-d-xylopyranosyl-(1 → 3)-[O-β-d-glucopyranosyl-(1 → 2)]-O-β-d-glucopyranosyl-(1 → 4)-β-d-galactopyranoside (hostaplantagineoside D, 4).
从玉簪花中分离得到4个新的呋甾烷醇苷。通过包括一维和二维核磁共振实验在内的光谱方法，确定它们的结构分别为26 - O - β - D - 吡喃葡萄糖基 - (25R) - 22 - O - 甲基 - 5α - 呋甾烷 - 2α,3β,22ξ,26 - 四醇3 - O - α - L - 吡喃鼠李糖基 - (1→4) - O - β - D - 吡喃木糖基 - (1→3) - [O - β - D - 吡喃葡萄糖基 - (1→2)] - O - β - D - 吡喃葡萄糖基 - (1→4) - β - D - 吡喃半乳糖苷（玉簪花苷A，1）、26 - O - β - D - 吡喃葡萄糖基 - (25R) - 5α - 呋甾烷 - 20(22) - 烯 - 2α,3β,26 - 三醇 - 3 - O - β - D - 吡喃葡萄糖基 - (1→2) - [O - β - D - 吡喃木糖基 - (1→3)] - O - β - D - 吡喃葡萄糖基 - (1→4) - β - D - 吡喃半乳糖苷（玉簪花苷B，2）、26 - O - β - D - 吡喃葡萄糖基 - (25R) - 5α - 呋甾烷 - 22(23) - 烯 - 2α,3β,20α,26 - 四醇 - 3 - O - β - D - 吡喃葡萄糖基 - (1→2) - [O - β - D - 吡喃木糖基 - (l→3)] - O - β - D - 吡喃葡萄糖基 - (1→4) - O - β - D - 吡喃半乳糖苷（玉簪花苷C，3）、26 - O - β - D - 吡喃葡萄糖基 - (25R) - 5α - 呋甾烷 - 20(22) - 烯 - 2α,3β,26 - 三醇 - 3 - O - α - L - 吡喃鼠李糖基 - (1→4) - O - β - D - 吡喃木糖基 - (1→3) - [O - β - D - 吡喃葡萄糖基 - (1→2)] - O - β - D - 吡喃葡萄糖基 - (1→4) - β - D - 吡喃半乳糖苷（玉簪花苷D，4）。
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