Abstract:

Two novel C glycosylflavones, apigenin-6-C-α-L-arabinopyranosyl-(1-4)-α-L- rhamnopyranoside (hemsleyanoside, 1) and apigenin-8-C-α-L-arabinopyranosyl-(1-4) –α-L-rhamno-pyranoside(isohemsleyanoside), together with a known compound (apigenin-6,8-di-C-β-D-glucopyranoside, 3), were isolated from the 95% EtOH extract of Tetrastigma hemsleyanum Diels et Gilg. Their structures were elucidated by chemical evidence and spectral analysis.

三叶崖爬藤中的新黄酮碳甙

刘东¹  鞠建华¹  林耕¹  许旭东¹  杨峻山¹  涂光忠²

(1.中国协和医科大学中国医学科学院药用植物研究所,北京,100094 ；2.北京微量化学研究所,北京,100083)

摘要：从三叶崖爬藤(Tetrastigma hemsleyanum Diels et Gilg.)的95%乙醇提取物中分离得到3个黄酮碳甙,经化学方法和光谱分析鉴定为:5,7,4′-三羟基黄酮-6-α-L-吡喃鼠李糖(1-4)-α-L-吡喃阿拉伯糖甙(1),5,7,4′-三羟基黄酮-8-α-L-吡喃鼠李糖(1-4)-α-L-吡喃阿拉伯糖甙(2),5,7,4′-三羟基黄酮-6,8-二-C-β-D-吡喃葡萄糖甙(3),1和2为新化合物,分别命名为崖爬藤甙和异崖爬藤甙.

关键词 三叶崖爬藤 黄酮碳甙 崖爬藤甙 异崖爬藤甙

Key words: Tetrastigma hemsleyanum, C glycosylflavone, hemsleyoside, isohemsleyoside