Digoniodiol, deoxygoniopypyrone A, and goniofupyrone A: three new styryllactones from Goniothalamus amuyon.

@article{Lan2005DigoniodiolDA,
  title={Digoniodiol, deoxygoniopypyrone A, and goniofupyrone A: three new styryllactones from Goniothalamus amuyon.},
  author={Yu Hsuan Lan and Fang‐Rong Chang and Chih-Chuang Liaw and Chin‐Chung Wu and Michael Yen-Nan Chiang and Yang chang Wu},
  journal={Planta medica},
  year={2005},
  volume={71 2},
  pages={
          153-9
        }
}
Three new styrylpyrone analogues, digoniodiol (2), deoxygoniopypyrone A (3), and goniofupyrone A (4), along with ten known styryllactones, were isolated from the aerial parts of Goniothalamus amuyon. Among these compounds, 2 is the first example of a bis-styrylpyrone. Compound 4 represents a new skeleton for styryllactones. All structures were established on the basis of spectroscopic data. The stereochemistry of 2 and 4 was determined by X-ray crystallographic analysis. The absolute… 
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This paper corrects the structure of the natural product to the anti isomer from the semi-synthesis and single-crystal X-ray structure determination of (±)-Goniotamirenone C, which displays identical NMR spectroscopic data to thenatural product.
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TLDR
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