Isolation and purification of Pseudostellarin B (cyclic peptide) from Pseudostellaria heterophylla (Miq.) Pax by high-speed counter-current chromatography
Lee, Frank Sen-Chun
- 化学化工－已发表论文 
Pseudostellarin B (cyclic peptide) was isolated and purified from the herbs of Pseudostellaria heterophylla (Miq.) Pax for the first time by high-speed counter-current chromatography (HSCCC) using a two-phase solvent system consisting of n-butanol-ethyl acetate-water (0.6:4.4:5, v/v). The technique can isolate mg levels of the target compound per run with purity better than 96%. The chemical structure of the compound has been positively confirmed by electrospray ionization time of flight (TOF) MS, H-1-NMR, C-13-NMR and H-1-C-13-COSY analyses. (c) 2006 Elsevier B.V. All rights reserved.