叉蕊皂甙的FABMS和MIKES研究  

Analysis of Several Saponinses from Dioscorea by FAB-MIKES Mass Spectrometry

作　　者：温汉辉[1] 翁庆梅 何维德[1] 刘承来 陈延镛[2] 

机构地区：[1]中山大学测试中心 [2]中国医学科学院药物研究所

出　　处：《质谱学报》1989年第2期73-77,共5页Journal of Chinese Mass Spectrometry Society

摘　　要：利用快原子轰击(FAB)和质量分析离子动能谱(MIKES)法对三个叉蕊皂甙的结构进行了分析,结果表明FAB谱可以给出分子量和特征碎片信息;根据MIKES谱可确定与皂甙元联接的糖基个数以及糖的连接顺序。Three steroidal saponinses, collettinside Ⅱ, Ⅲ and Ⅳ, which were isolated from the rhizomes of Dioscorea collettii Hook. f., were studied by means of FAB-MIKES mass spectrometry. Their structures areas follows: 3-O-[α-L-rhamnopyranosyl (1→4)-β-D-glucopyranosyl]-yamogenin[Ⅱ]; 3-O-{α-L-rhamnopyranosy] (1→4)-[α-L-rhamnopyranosyl (1→2)]-β-D-glucopyranosyl} -yamogenin[Ⅲ]; 3-O-{β-D-glucopyranosyl (1→3)-[α-L-rhamnopyranosyl (1→2)]-β-D-glucopyranosyl}-yamogenin[Ⅳ]. The molecular weight of the sample can be obtained in FAB spectra and the information of sequences of the sugar groups can be determinated with MIKES,

关 键 词：FABMS MIKES 快原子轰击 鼠李 碎片峰 分子离子峰 糖基 化学结构 丢失质量 质量分析 

分 类 号：TH843-55[机械工程—仪器科学与技术]