Abstract: A recyc领 counter-current chromatographic system was first set up with a high-speed counter-current chromatography instrument coupled with a column switching valve. This system was first successfully applied to the preparative separation of epimers, gambogic acid and epigambogic acid from Garcinia hanburyi using n-hexanemethanolwater (5:4:1, v/v/v) as the two-phase solvent system. As a result, 28.2 mg gambogic acid and 18.4 mg epigambogic acid were separated from 50 mg of mixture. Their purities were both above 97% as determined by HPLC. The chemical structures were then identified by their H-NMR and C-NMR spectra. TBE-300A高速逆流色谱仪/制备色谱仪 TBE-1000A制备色谱仪/萃取仪/快速分离制备色谱仪 TBE300B+AKTA高速逆流色谱仪/离心分配色谱/萃取仪/制备色谱仪 TBE-200V 高速逆流色谱仪
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