Biosynthesis of xanthofusin, a tetronic acid metabolite of Fusicoccum SP

  • Breinholt J
  • Damtoft S
  • Frederiksen L
 et al. 
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Abstract

Incorporation experiments with [Me-2H3]methionine, [1-13C]- and [1,2-13C2]- acetate showed that the methyl groups of xanthofusin are derived from methionine, and the remaining carbon atoms are derived from three intact acetate units. Incorporation of13C-labelled 1,3-dihydroxy-2,4-dimethylbenzene shows that this is a probable intermediate. Three possible pathways are discussed, namely a triketide origin of xanthofusin, a route via a tetraketide but with loss of the starter unit and, finally, a route including a triketide with a malonate starter unit. © 1995.

Author-supplied keywords

  • Fusicoccum
  • biosynthesis
  • tetronic acids
  • xanthofusin

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Authors

  • Jens Breinholt

  • Søren Damtoft

  • Lotte Boe Frederiksen

  • Lars Bo Laurenborg Hansen

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