Han Chao, Chen Junhui, Liu Jie, Lee Frank Sen-Chun, Wang Xiaoru
Department of Chemistry and the Key Laboratory of Analytical Science of the MOE, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
Talanta. 2007 Feb 15;71(2):801-5. doi: 10.1016/j.talanta.2006.05.016. Epub 2006 Jun 21.
Pseudostellarin B (cyclic peptide) was isolated and purified from the herbs of Pseudostellaria heterophylla (Miq.) Pax for the first time by high-speed counter-current chromatography (HSCCC) using a two-phase solvent system consisting of n-butanol-ethyl acetate-water (0.6:4.4:5, v/v). The technique can isolate mg levels of the target compound per run with purity better than 96%. The chemical structure of the compound has been positively confirmed by electrospray ionization time of flight (TOF) MS, (1)H-NMR, (13)C-NMR and (1)H-(13)C-COSY analyses.
首次采用高速逆流色谱法(HSCCC),以正丁醇 - 乙酸乙酯 - 水(0.6:4.4:5,v/v)组成的两相溶剂系统,从太子参(Pseudostellaria heterophylla (Miq.) Pax)的草药中分离并纯化出假太子参环肽B(环状肽)。该技术每次运行可分离出毫克级的目标化合物,纯度高于96%。该化合物的化学结构已通过电喷雾电离飞行时间(TOF)质谱、(1)H - NMR、(13)C - NMR和(1)H - (13)C - COSY分析得到确证。