Sesquineolignans and other constituents from the seeds of Joannesia princeps.

@article{Waibel2003SesquineolignansAO,
  title={Sesquineolignans and other constituents from the seeds of Joannesia princeps.},
  author={Reiner Waibel and Gerd Benirschke and Monika Benirschke and Hans Achenbach},
  journal={Phytochemistry},
  year={2003},
  volume={62 5},
  pages={805-11}
}
From the methanolic extract of the seeds of the Brazilian Joannesia princeps 3,3'-bisdemethylpinoresinol and six new sesquineolignans were isolated besides the known neolignans americanol A, isoamericanol A and isoamericanin A which were found to be the major constituents. A method was developed to distinguish americanol- from isoamericanol-type compounds spectroscopically.