Purification of Sesquiterpenes from Saussurea LappaRoots by High Speed Counter Current Chromatography

Document Type : Research article

Authors

1 Pharmaceutical and Biological Engineering College, Chongqing University of Technology, Chongqing 400054, China.

2 College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, P.R. China.

3 Defense Key Disciplines Lab of Novel Micro-nano Devices and System Techonlogy, Chongqing, 400030, P.R. China.

4 International Research and Development Center of Micro-nano Systems and New Materials Technology, 400030, P.R. China.

Abstract

Sesquiterpenes lactones including costunolide and dehydrocostus lactone, were isolated from Saussurea lappa roots, which had exhibited a wide range of biological activities such as anti-cancer, anti-inflammatory, antiulcer, and immunomodulatory activities. High-speed counter-current chromatography (HSCCC) was applied for the rapid preparative isolation of sesquiterpenes lactones from Saussurea lappa roots. A solvent optimization method for HSCCC was presented, i.e. the separation factors of compounds after the partition coefficient (K) of solvent system should be investigated. Using this method, 150 mg of costunolide, 140 mg of dehydrocostus and 15 mg of 10-methoxy-artemisinic acid with purities of 95%, 98%, and 98% were obtained within 150 min. The structures of three compounds were identified by mass spectrum (MS) and nuclear magnetic resonance (NMR) spectroscopy. These results offered an efficient strategy for separation of potentially health-relevant phytochemicals from Saussurea lappa roots.

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