朝藿甙E的分离和结构

Caohuoside-E from the Aerial Parts of Epimedium Koreanum Nakai

从朝鲜淫羊藿的地上部分分离到２个化合物，经化学和光谱方法鉴定它们为５，７－二羟基－４＇－甲氧基－８－异戊烯基黄酮醇－３－Ｏ－β－Ｄ－（２－Ｏ－乙酰基）－葡萄吡喃糖基－（１→３）－α－Ｌ－（４－Ｏ－乙酰基）－鼠李吡喃糖基－７－Ｏ－β－Ｄ－葡萄吡喃（Ⅰ）和β－脱水淫羊藿素（Ⅱ），其中Ⅰ是未见报道的化合物，命名为朝藿甙－Ｅ，Ⅱ为首次从该植物中获得。

A new flavonol glycoside, named caohuoside-E(Ⅰ).was isolated from the aerial parts of Epimedium koreanum Nakai in addition to a known compound. By means of IR,UV, FAB-MS, EI-MS, ￣1H NMR,￣(13)C NMR,￣1H-￣1H COSY,￣1H-￣(13)C COSY,￣1H-￣(13)C long range COSY((HMBC)and chemical. evidence . the structure of caohuoside-E was determined as 5, 7-dihydroxy 1 - 4' -methoxyl-8-prenylflavonol-3-O-β-D (-2-O-acetyl)-glucopyranosyl-(1→3)-α-L-(4-O-acetyl )-rhamnopyranosyl-7-O-β-D-glucopyranoside.The known compound (Ⅱ)was identified as β-anhydroicaritin.