首次对紫色悬钩子 Rubus irritans Focke和菰帽悬钩子R.pileatus Focke的化学成分进行了研究。从其地上部分的乙醇提取物经各种柱层析方法分离纯化分别得到６个和５个化合物,运用光谱方法和与标准品对照分别鉴定为：2α,3β,19α-三羟基乌索-12-烯-28-酸(Ⅰ),2α,3β,19α,23-四羟基乌索-12-烯-28-酸(Ⅱ),2α,3β,19α,23-四羟基齐墩果-12-烯-28-酸(Ⅲ),2α,3β,19α,24-四羟基乌索-12-烯-28-酸(Ⅳ),３β,１９α-二羟基乌索-１２-烯-24,28-二酸(Ⅴ),乌索酸(Ⅵ),齐墩果酸(Ⅶ),卜胡萝卜苷(Ⅷ)和β-Ｄ-(-)-吡喃果糖(Ⅸ)。这些化合物均为首次从该两种植物中分得。

Six and five compounds have been isolated respectively from Purple Raspberry (Rubus irritan Focke) and Capform Raspberry (Rubus pileatus Focke). Based on chemical and spectral evi dences,or by comparison with authentic samples,the structures of these compounds were elucidated as 2a, 3p,19a-trihy-droxyurs-l2-en-28-oic acid(I),2a, 3β, 19a, 23-tetrah ydroxyurs-12-en-28-oic acid(Ⅱ),2a, 3β, 19a, 23-tetrahydroxyolean-l2-en-28-oic acid( Ⅲ),2a, 3β, 19a, 24-tetrahydroxyurs-12-en-28-oic acid(Ⅲ),3β, 19a-dihydroxyurs-12-en-24, 28-dioic acid( V),ursolic acid(VI),oleanolic acid(Ⅶ),daucosterol (Ⅷ),and (β-D-pyranofructose(Ⅸ).All these compounds were isolated for the first time from these two species of Rubus L.

国家自然科学基金;兰州大学应用有机化学国家重点实验室资助