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川续断中新七糖三萜皂苷的核磁共振研究
引用本文:缪振春,冯锐,周永新,魏锋.川续断中新七糖三萜皂苷的核磁共振研究[J].波谱学杂志,1999,16(1):44-51.
作者姓名:缪振春  冯锐  周永新  魏锋
作者单位:1.军事医学科学院毒物药物研究所, 北京 100850;2.北京江中药物研究所, 北京 100050
摘    要:从中药川续断根部的乙醇提取物中分得一个新的三萜皂甙.经过测定,它为:3-Oα-L-吡喃鼠李糖(1→3)]-β-D吡喃葡萄糖(1→4)]-β-D吡喃葡萄糖(1→3)-α-L-吡喃鼠李糖(1→2)-β-L-吡喃阿拉伯糖-常春藤甙元-28-O-β-D-吡喃葡萄糖(1→6)-β-D-吡喃葡萄糖酯甙.本文采用一维SEMDY,旋转坐标NOE差谱和选择性远程DEPT新技术相结合测定该化合物的糖链结构.

关 键 词:中药川续断  七糖皂甙  糖体1H  NMR亚谱  糖链结构测定  旋转坐标NOE差谱  选择性远程DEPT  一维SEMDY  
收稿时间:1998-11-06

NMR STUDY ON A NEW BIDESMOSIDIC TRITERPENOID GLYCOSIDE FROM DIPSOCUS ASPEROIDES
Miao Zhenchun,Feng Rui,Zhou Yongxin,Wei Feng.NMR STUDY ON A NEW BIDESMOSIDIC TRITERPENOID GLYCOSIDE FROM DIPSOCUS ASPEROIDES[J].Chinese Journal of Magnetic Resonance,1999,16(1):44-51.
Authors:Miao Zhenchun  Feng Rui  Zhou Yongxin  Wei Feng
Institution:1.Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850;2.Beijing Jiangzhong Pharmaceutical Institute, Beijing 100050
Abstract:A new 3,28-bidesmosidic triterpenoid saponin was isolated from the ethanolic extract of the root of Dipsocus asperoides C.Y.Cheng et T.M.A. and its structure established as 3-O-α-L-rhammopyranosyl(1→3)]-β-D-glycopranosyl(1→4)]-β-D-glycopranosy(1→3)-α-L-rhammopyranosyl (1→2)-β-L-arabinopyranosyl-hederagenin-28-O-β-D-glycopranosyl (1→6)-β-D-glycopranoside. The sites of glycosylation and the sequence of sugars in the glycoside can be determined unambiguously and total assignment of severely overlapping proton resonance of sugar residues were achieved by a combined use of the 1D SEMDY, NOE difference spectroscopy in rotating frame and selective long-range DEPT techniques.
Keywords:H NMR sepectrum of sugar residue  Dipsocus asperoides  3  28  bidesmosidic triterpenoid saponin  Structural determination of Oligosaccharide Chains  ROE difference spectroscopy  Selective long  range DEPT  1D  SEMDY  
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