Abstract: Three new olean-type triterpenoids,3β,15α-dihydroxy-olean-12(13)-en-16-one(1),3β,15α,23-trihydroxy-olean-12(13)-en-16-one (2)and 15α-hydroxy-16-oxo-olean-12-en-3-o-β-glucuro-nopyranoside(3),named eriocarpins A(1),B(2)and C(3),respectively, alongwith two known compounds 2β,3β,28-trihydroxy-12(13)-en-olean and β-amyrin were isolated from the roots of Derris eriocarpa How.Their structures were determined were determined by the basis of chemical and spectral evidences.

Key words: Derris eriocarpa

摘要： 从民间杀虫植物鱼藤(Derris eriocarpa How)的根中分离得到5个三萜化合物,经波谱和化学分析确定了这些化合物的化学结构.其中化合物1(3β,15α-dihydroxy-olean-12(13)-en-16-one),2(3β,15α, 23-trihydroxy-olean-12(13)en-16-one),3(15α-hydroxyl-16-oxo-olean-12(13)-en-3-O-β-glucuronopyranoside)为新化合物,命名为鱼藤三萜素A,B,C.两个已知三萜为2β,3β,28-三羟基-12(13)-烯-齐墩果烷和β-香树脂素(β-amyrin).另外还得到了二十七碳脂肪酸单甘油酯和β-谷甾醇.

关键词: 鱼藤, 三萜, 鱼藤三萜素A, B, C