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Separation of two main triterpene glycosides from sea cucumber Pearsonothuria graeffei by high-speed countercurrent chromatography

Dong P., Xue C. H., Du Q. Z.

Acta Chromatographica

2008

Vol. 20, no. 2

269-276

Holostane series glycosides have been isolated by a new and effective method. Two main triterpene glycosides from sea cucumber Pearsonothuria graeffei extract were successfully purified by one-step high-speed countercurrent chromatography (HSCCC) using a two-phase solvent systems comprising ethyl acetate-n-butanol- methanol-water 2.4:2.6:0.2:4.8 (v/v) to yield holothurin A and echinoside A with purities 93.5 and 95.5%, respectively. The chemical structures were elucidated by ESIMS and NMR analysis.