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苦玄参甙A和B的结构(简报)
成桂仁; 金静兰; 文永新; 甘立宪; 陈毓群;   
1.广西植物研究所;2.中国科学院上海有机化学研究所;3.中国科学院上海有机化学研究所 桂林;4.桂林
摘要:
从苦玄参(Picria fel-terrae Lour.)抗癌有效的B部分,分离出二种新四环三萜甙,称苦玄参甙A和B(Picfelterraenin A和B)。经元素分析确定其分子式为C41H62O13和C42H64O14。二者的IR均有羟基(3420cm-1)、羰基(1685cm-1)、与羰基共轭的双键(1585cm-1)及强的C—O伸缩振动吸收峰(1160—950cm-1)。二者
关键词:  苦玄参  四环三萜  鼠李糖基  元素分析  葡萄糖残基  酸水解  伸缩振动  吸收峰  低场  位移值  
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