中文摘要：

为了研究山栀茶（Radix Pittospori）的化学成分,运用多种色谱方法进行分离纯化,从其氯仿提取物中分离得到2个三萜类化合物,并根据理化性质和波谱数据鉴定其结构分别为22-acetyl-21-（2-acetoxy-2-methylbutanoyl）-R1-barrigenol（1）和3α-hydroxyl-20-demethylisoaleuritolic-14（15）-ene-28,30-dioic acid（2）。其中,化合物1为新的三萜类化合物,化合物2为首次从该植物中分离得到。

英文摘要：

To investigate chemical constituents from Radix Pittospori,chloroform extract of the roots was subjected to column chromatography with various chromatographic techniques.The structures were elucidated on the basis of physico-chemical property and spectral analysis.Two triterpenoids were identified as 22-acetyl-21-（2-acetoxy-2-methylbutanoyl）-R 1-barrigenol （1） and 3α-hydroxyl-20-demethylisoaleuritolic-14 （15）-ene-28,30-dioic acid（2）.Compound 1 is a new triterpene and compound 2 is isolated from this plant for the first time.