Xu Lu, Zhang Xiao, Lin Li-Mei, Li Chun, Wang Zhi-Min, Luo Yong-Ming
Institute of Chinese Materia Medica, China Academy of Chinese Medicine Sciences, Beijing, China.
J Asian Nat Prod Res. 2013 Jul;15(7):737-42. doi: 10.1080/10286020.2013.799144. Epub 2013 Jun 14.
Two new flavonol glycosides characterized as quercetin 3-O-α-l-rhamnopyranosyl-(1 → 2)-[β-d-glucopyranosyl-(1 → 3)-α-l-(4-O-trans-p-coumaroylrhamnopyranosyl)-(1 → 6)]-β-d-galactopyranoside-7-O-α-l-rhamnopyranoside (1) and kaempferol 3-O-α-l-rhamnopyranosyl-(1 → 2)-[β-d-glucopyranosyl-(1 → 3)-α-l-(4-O-trans-p-coumaroyl rhamnopyranosyl)-(1 → 6)]-β-d-galactopyranoside-7-O-α-l-rhamnopyranoside (2), together with two known flavonol glycosides quercetin 3-O-α-l-rhamnopyranosyl-(1 → 2)- [α-l-rhamnopyranosyl-(1 → 6)]-β-d-galactopyranoside-7-O-α-l-rhamnopyranoside (3) and kaempferol 3-O-α-l-rhamnopyranosyl-(1 → 2)-[α-l-rhamnopyranosyl-(1 → 6)]-β-d-galactopyranoside-7-O-α-l-rhamnopyranoside (4), were isolated from the whole plant of Aconitum tanguticum (Maxim.) Stapf. The structures of the new compounds were elucidated by spectroscopic methods, and the total (1)H and (13)C NMR chemical shifts were assigned.
从唐古特乌头（Maxim.）Stapf的全株中分离出两种新的黄酮醇苷，分别鉴定为槲皮素3 - O -α - l - 鼠李糖基 -（1→2）-[β - d - 葡萄糖基 -（1→3）-α - l -（4 - O - 反式 - 对香豆酰鼠李糖基）-（1→6）]-β - d - 半乳糖苷 - 7 - O -α - l - 鼠李糖苷（1）和山柰酚3 - O -α - l - 鼠李糖基 -（1→2）-[β - d - 葡萄糖基 -（1→3）-α - l -（4 - O - 反式 - 对香豆酰鼠李糖基）-（1→6）]-β - d - 半乳糖苷 - 7 - O -α - l - 鼠李糖苷（2），以及两种已知的黄酮醇苷槲皮素3 - O -α - l - 鼠李糖基 -（1→2）-[α - l - 鼠李糖基 -（1→6）]-β - d - 半乳糖苷 - 7 - O -α - l - 鼠李糖苷（3）和山柰酚3 - O -α - l - 鼠李糖基 -（1→2）-[α - l - 鼠李糖基 -（1→6）]-β - d - 半乳糖苷 - 7 - O -α - l - 鼠李糖苷（4）。通过光谱方法阐明了新化合物的结构，并指定了总的¹H和¹³C NMR化学位移。
