报春花叶和花中的新黄酮醇苷。
New flavonol glycosides from the leaves and flowers of Primula sieboidii.
作者信息
Hashimoto Nana, Ohsawa Ryo, Kitajima Junichi, Iwashina Tsukasa
出版信息
Nat Prod Commun. 2015 Mar;10(3):421-3.
Three flavonol glycosides were isolated from the leaves of Primula sieboldii. They were identified as quercetin 3-O-β-[xylopyranosyl-(1-->2)-β- glucopyranosyl-(1-->6)-β-glucopyranoside] (1), kaempferol 3-O-β-[glucopyranosyl-(1-->2)-β-glucopyranosyl-(1-->6)-β-glucopyranoside] (2) and kaempferol 3- O-β-[xylopyranosyl-(1-->2)-β-glucopyranosyl-(1-->6)-β-glucopyranoside] (3). Their chemical structures were determined by UV, 1H and 13C NMR spectroscopy, LC-MS and acid hydrolysis. Compounds 1 and 3 are found in nature for the first time. They were also detected in the flowers, together with two anthocyanins, malvidin 3,5-di-O-glucoside and a minor petunidin dihexoside.
从鄂报春叶片中分离出三种黄酮醇苷。它们被鉴定为槲皮素3 - O - β - [吡喃木糖基 - (1→2) - β - 吡喃葡萄糖基 - (1→6) - β - 吡喃葡萄糖苷]（1）、山奈酚3 - O - β - [吡喃葡萄糖基 - (1→2) - β - 吡喃葡萄糖基 - (1→6) - β - 吡喃葡萄糖苷]（2）和山奈酚3 - O - β - [吡喃木糖基 - (1→2) - β - 吡喃葡萄糖基 - (1→6) - β - 吡喃葡萄糖苷]（3）。通过紫外光谱、1H和13C核磁共振光谱、液相色谱 - 质谱联用以及酸水解确定了它们的化学结构。化合物1和3是首次在自然界中发现。它们也在花朵中被检测到，同时还检测到两种花青素，即锦葵色素3,5 - 二 - O - 葡萄糖苷和一种次要的矮牵牛色素二己糖苷。
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