## Abstract Dioscin derivatives from the __Dioscorea villosa__ roots were isolated and purified by centrifugal partition chromatography coupled with evaporative light scattering detection. The two‐phase solvent system composed of chloroform‐methanol‐isopropanol‐water (7:6:1:4, v/v/v/v) was used to
Application of centrifugal partition chromatography coupled with evaporative light scattering detection for the isolation of saikosaponins-a and -c from Bupleurum falcatum roots
✍ Scribed by Kee Dong Yoon; Jinwoong Kim
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 577 KB
- Volume
- 32
- Category
- Article
- ISSN
- 1615-9306
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✦ Synopsis
Abstract
Centrifugal partition chromatography (CPC) coupled with evaporative light scattering detection (ELSD) was applied to separate saikosaponins‐a and ‐c preparatively from Bupleurum falcatum roots. The two‐phase solvent system composed of ethyl acetate/n‐butanol/methanol/water (15:1:3:15 by volume) was used to yield saikosaponins‐a (36.1 mg) and ‐c (28.7 mg) from 370 mg of saponin‐rich extract. The purities of isolated compounds were 96.6 and 97.3% for saikosaponins‐a and ‐c, respectively. Structure identification of these compounds was accomplished by comparison of spectroscopic data of ESI‐MS, ^1^H NMR, and ^13^C NMR with those of previously reported values.
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## Abstract Microcolumn chromatography (1.0 mm to 0.3 mm column i.d.) of underivatized amino acids coupled to evaporative light‐scattering (ELS) detection demonstrated good baseline stability using perfluorinated carboxylic acid ion‐pairing agents of varying alkyl chain lengths (C~2~–C~8~) and conc