Total synthesis of naturally configured pyrrhoxanthin, a carotenoid butenolide from plankton.

@article{Burghart2008TotalSO,
  title={Total synthesis of naturally configured pyrrhoxanthin, a carotenoid butenolide from plankton.},
  author={J. Burghart and R. Br{\"u}ckner},
  journal={Angewandte Chemie},
  year={2008},
  volume={47 40},
  pages={
          7664-8
        }
}
The structure of the marine natural product pyrrhoxanthin (5) is highly unusual for a carotenoid. Firstly, it comprises 37 rather than 40 carbon atoms, and secondly it contains oxygen substituents not only in the six-membered rings but as constituents of an annulated butenolide. Pyrrhoxanthin has been isolated from the chloroplasts of various dinoflagellates and usually accompanies the more abundantly encountered C37-butenolide carotenoid peridinin. [4] Because of its low concentration in… Expand
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