摘要
从小叶蛇葡萄根中分离出两个同分异构体的五环三萜酸,通过理化性质和光谱分析等确定其一为齐墩果酸;另一酸之乙酰化物。进一步用X射线单晶衍射确定结构及其绝对构型。此酸为白桦脂酸,两者均首次从该植物根中分离出。
Two isomeric pentacyclic-triterpenic acids were isolated from the root of Ampelosis brevipedunculata var hancei Rhed for the first time. One acid was identified as oleanolic acid by means of physico-chemical properties and spectral analysis. The other one was acetylatcd and confirmed by X-ray diffraction analysis. This acid was proved to be betulinic acid.
出处
《第二军医大学学报》
CAS
CSCD
北大核心
1989年第6期535-537,共3页
Academic Journal of Second Military Medical University
关键词
小叶蛇葡萄
白桦脂酸
五环三萜酸
Ampelosis brevipeduiiculata var hancei Rehd.
pentacylic-triterpenic acid
oleanolic acid
betulinic acid
