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1 2011

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Preparative isolation and purification of C6-C2 natural alcohol and benzyl ethanol from Frosythia suspensa by high-speed countercurrent chromatography

Duan W. J, Zheng Z. J, Geng Y. L, Liu J. H, Wang X.

Acta Chromatographica

2011

Vol. 23, no. 3

499--507

A preparative high-speed countercurrent chromatograph (HSCCC) method for the isolation and purification of C6-C2 natural alcohol and benzyl ethanol from Forsythia suspensa was successfully established. Cornoside, forsythenside F, forsythiaside, and acteoside were rapidly obtained for the first time by HSCCC with a two-phase solvent system ethyl acetate-n-butanol-methanol-water (5:1:0.5:5, υ/υ) in one-step separation. The purities of them were all above 97% as determined by high-performance liquid chromatography, and the combination of ESI-MS and NMR analysis confirmed the chemical structures of the four compounds.