Preparative separation of gambogic acid and its C-2 epimer using recycling high-speed counter-current chromatography.

@article{Han2006PreparativeSO,
  title={Preparative separation of gambogic acid and its C-2 epimer using recycling high-speed counter-current chromatography.},
  author={Quan-Bin Han and Jing-zheng Song and Chun-feng Qiao and Lina Wong and Hong-Xi Xu},
  journal={Journal of chromatography. A},
  year={2006},
  volume={1127 1-2},
  pages={
          298-301
        }
}

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Pyridinium gambogate, (C5H6N)+(C38H43O8)−, crystallizes in space group P212121 with cell parameters a = 9.536(3) Å, b = 18.502(4) Å, c = 22.223(4) Å, Z = 4. The X-ray structural analysis [R(F) =

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