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Application of Preparative High-Speed Counter-Current Chromatography for the Separation of Two Alkaloids from the Roots of Tabernaemontana catharinensis (Apocynaceae)

机译:制备型高速逆流色谱法在中华绒螯蟹根中分离出两种生物碱的应用

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摘要

The methanolic extract of Tabernaemontana catharinensis (Apocynaceae) roots, which contains alkaloids with several biological activities, was separated on a preparative scale using high-speed counter-current chromatography. The optimum solvent system was found to be a mixture of CHCl3-MeOH-H2O [5:10:6 (v/v/v)] and led to a successful separation of two monoterpenic indole alkaloids, voachalotine (>1) and 12-methoxy-Nb-methylvoachalotine (>2) in approximately 4.0 hours. The alkaloids were all isolated at purities over 95%, and their structures were established on the basis of spectroscopic methods, including 1D and 2D NMR and EI/MS.
机译:使用高速逆流色谱法按制备规模分离出塔宾草(Abercynaceae)根的甲醇提取物,其中含有具有多种生物活性的生物碱。发现最佳溶剂系统是CHCl3-MeOH-H2O [5:10:6(v / v / v)]的混合物,可成功分离出两种单萜吲哚生物碱,voachalotine(> 1 )和12-甲氧基-Nb-甲基voachalotine(> 2 )在大约4.0小时内。所有生物碱的纯度均超过95%,并根据包括1D和2D NMR和EI / MS在内的光谱方法建立了结构。

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