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Heteroxanthin in Euglena gracilis


1. From a large scale preparation of Euglena gracilis, strain Z, besides the acetylenic pigments diatoxanthin and diadinoxanthin and the allene neoxanthin, an additional acetylenic xanthophyll has been isolated. 2. Mass and IR spectra and chemical reactions showed typical patterns of heteroxanthin from Vaucheria. 3. The pigment was transformed into diadinochrome-isomers with acidified acetone. 4. A partial synthesis of heteroxanthin from diadinoxanthin by LiAlH4-reduction is described, confirming the structure proposed by Strain. 5. The identity of heteroxanthin with the trollein—like pigment described for Euglena is discussed.

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Nitsche, H. Heteroxanthin in Euglena gracilis . Archiv. Mikrobiol. 90, 151–155 (1973).

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  • Acetone
  • Xanthophyll
  • Typical Pattern
  • Neoxanthin
  • Euglena Gracilis