Qin Hai-lin, Zhang Jian-xin, Wang Zheng-tao, Yang Xiao-sheng, Xu Luo-shan, Hao Xiao-jiang
Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, Guiyang 550002, Guizhou, China.
Zhongguo Zhong Yao Za Zhi. 2002 Dec;27(12):919-23.
To analyse the 1H-NMR finger-print of the stem of Dendrobium loddigesii.
Silica gel column chromatography was used to separate the chemical constituents of SCE A of the stem of D. loddigesii. The characteristic signals of the H-NMR finger-print were analysed after determining the structures of the compounds isolated from SCE A.
1H-NMR finger-prints of the samples of D. loddigesii collected from different regions showed highly characteristic features and reproducibility. Four compounds predominant in SCE A were isolated and their structures were determined by spectral analysis as 1, 2, 3 and 4, respectively.
Compound 3 and 4 were isolated from D. loddigesii for the first time. The 1H-NMR finger-print of CGE A of the stem of D. loddigesii showed mainly the characteristic signals of the above four compounds and might be utilized for the original authentication of this plant.
分析环草石斛茎的氢核磁共振指纹图谱。
采用硅胶柱色谱法分离环草石斛茎中SCE A的化学成分。在确定从SCE A中分离得到的化合物结构后，对氢核磁共振指纹图谱的特征信号进行分析。
从不同地区采集的环草石斛样品的氢核磁共振指纹图谱显示出高度特征性和可重复性。从SCE A中分离出四种主要化合物，并通过光谱分析分别确定其结构为1、2、3和4。
化合物3和4首次从环草石斛中分离得到。环草石斛茎的CGE A的氢核磁共振指纹图谱主要显示上述四种化合物的特征信号，可用于该植物的原植物鉴定。
