The microbiological transformation of some ent-13-epi-manoyl oxide diterpenes by Gibberella fujikuroi

  • Fraga B
  • González P
  • Guillermo R
 et al. 
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Abstract

Incubation of ent-19-hydroxy-13-epi-manoyl oxide with Gibberella fujikuroi afforded ent-12α,19-dihydroxy-13 -epi-manoyl oxide and ent-7β, 12α, 19-trihydroxy-13 -epi-manoyl oxide, the first of which was transformed by chemical methods into varol (ent-12α-hydroxy-13-epi-manoyl oxide). The incubation of ent-3β-hydroxy-13-epi-manoyl oxide (ribenol) with the same fungus gave the 12β-hydroxy, the 11β-hydroxy and the 11β,12β-dihydroxy derivatives of ribenol, the first of which was identical with varodiol. © 1989.

Author-supplied keywords

  • Gibberella fujikuroi
  • diterpenes
  • ent-13-epi-manoyl oxide derivatives
  • microbiological transformation
  • varodiol.
  • varol

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Authors

  • Braulio FragaInstituto de Productos Naturales y Agrobiologia

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  • pedro González

  • Ricardo Guillermo

  • Melchor G. Hernández

  • Juana Rovirosa

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