Sesquiterpene coumarins from the roots of Ferula sinkiangensis and Ferula teterrima.

@article{Yang2006SesquiterpeneCF,
  title={Sesquiterpene coumarins from the roots of Ferula sinkiangensis and Ferula teterrima.},
  author={Jun-rong Yang and Zheng Hua An and Zhi-hong Li and Song Jing and Hai-Lin Qina},
  journal={Chemical & pharmaceutical bulletin},
  year={2006},
  volume={54 11},
  pages={
          1595-8
        }
}
Three new natural sesquiterpene coumarins, isofeterin (1), lehmannolol (3), sinkianone (4), and one known compound, lehmannolone (2), were isolated from the roots of Ferula teterrima and Ferula sinkiangensis. Their chemical structures were established on the basis of spectroscopic analysis, including X-ray crystallography and CD spectrum measurements for determining the absolute configuration of compound 2. 

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