Abstract: Four new oleanane triterpenoidal saponins,arillatanoside A-D,together with a known saponin polygalasaponin XXXV were isolated from the stem bark of Polygala arillata.The structures of new saponins were established to be 28-O-α-L-arabinopyranosyl-(1→3)-β-D-xylopyranosyl-(1→4)-α-L-rhamnopyranosyl-(1→2)0β-D-fucopyranosyl presenegenin-3-O-β-D-glucopyranoside.

Key words: Polygalaceae, Polygala arillata, Triterpenoidal saponins, Arillatanoside A-D

摘要： 从云南产远志科药用植物黄花远志(Polygala arillata Buch.-Ham.ex D．Don)茎皮的乙醇提取物中分离得到4个新的齐墩果烷型三萜皂甙，命名为黄花远志皂甙(arillatanoside)A－D。同时还分离得到1个已知的三萜皂甙远志甙(polygalasaponin)XXXV。它们的结构通过波谱方法推定。

关键词: 远志科, 黄花远志, 三萜皂甙, 黄花远志皂甙A－D