Proposed pathway to the pyrones cortalcerone and microthecin in fungi

@article{Baute1987ProposedPT,
  title={Proposed pathway to the pyrones cortalcerone and microthecin in fungi},
  author={R. Baute and M. Baute and G. Deffieux},
  journal={Phytochemistry},
  year={1987},
  volume={26},
  pages={1395-1397}
}
Abstract Carbonyl forms of d -glucopyranosone, 1,5-anhydro- d -fructopyranose and d -xylopyranosone possess a three-carbon steric arrangement which could be acted on by the dehydratase(s) of the cortalcerone or microthecin-producing fungi. With the first two substrates, two dehydrations via a spontaneously recyclized straight-chain intermediate would yield racemic cortalcerone or microthecin; d -xylosone would undergo a single dehydration yielding a compound for which a structure is proposed. 
Rare sugars and sugar-based synthons by chemo-enzymatic synthesis.
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