Preparation of sesquiterpenoids from Tussilago farfara L. by high-speed counter-current chromatography

Kun Cao; Yi Xu; Tian-Ming Zhao; Qing Zhang

Articles

Abstract

Pharmacognosy Magazine,2016,12,48,282-287.

DOI:10.4103/0973-1296.192196

Published:October 2016

Type:Original Article

Authors:

Author(s) affiliations:

Kun Cao¹, Yi Xu², Tian-Ming Zhao³, Qing Zhang¹
¹ College of Chemistry and Chemical Engineering, Chongqing University; Defense Key Disciplines Lab of Novel Micro-nano Devices and System Techonlogy, Chongqing, P.R. China
² College of Chemistry and Chemical Engineering, Chongqing University; Defense Key Disciplines Lab of Novel Micro-nano Devices and System Techonlogy; International R and D Center of Micro-nano Systems and New Materials Technology, Chongqing, P.R. China
³ College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P.R. China

Abstract:

Background: Sesquiterpenoids, such as tussilagone, has effects of raising blood pressure, antiplatelet aggregation, and anti-inflammation activities, which is regarded as index compound for quality control of Tussilago farfara L. Objective: This study was aimed to obtain an effective method for fast isolation of sesquiterpenoids from T. farfara L. by high-speed counter-current chromatography (HSCCC). Materials and Methods: A solvent optimization method for HSCCC was presented, i.e., the separation factors of compounds after the K values of solvent system should be investigated. Results: A ternary solvent system of n-hexane:methanol:water (5:8:2, v/v/v) was selected and applied for the HSCCC, and 56 mg of tussilagone (2) was isolated from T. farfara L., along with two other sesquiterpenoids 5.6 mg of 2,2-dimethyl-6-acetylchromanone (1) and 22 mg of 14-acetoxy-7 β-(3'-ethyl cis-crotonoyloxy)-lα-(2'-methylbutyryloxy)-notonipetranone (3) by HSCCC with high purities. Their chemical structures were elucidated by liquid chromatography-mass spectrometry and nuclear magnetic resonance experiments. Conclusion: These results offered an efficient strategy for preparation of potentially health-relevant phytochemicals from T. farfara L., which might be used for further chemical research and pharmacological studies by preparative HSCCC.