Structure elucidation and NMR spectral assignment of five new xanthones from the bark of Garcinia xanthochymus.

@article{Chen2008StructureEA,
  title={Structure elucidation and NMR spectral assignment of five new xanthones from the bark of Garcinia xanthochymus.},
  author={Yu Hao Chen and Fangfang Zhong and Hongwu Zheng He and Yun Hu and Dan Zhu and Guang-Zhong Yang},
  journal={Magnetic resonance in chemistry : MRC},
  year={2008},
  volume={46 12},
  pages={
          1180-4
        }
}
Five new xanthones, namely Garcinexanthones A-E (1-5), were isolated from the barks of Garcinia xanthochymus. Their structures were elucidated by spectral analysis, primarily NMR, MS, and UV. The complete assignments of the (1)H NMR and (13)C NMR chemical shifts for the compounds were achieved by using 1D and 2D NMR techniques, including DEPT, HSQC, and HMBC NMR experiments. 

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