The invention relates to a process for producing 1.alpha.-hydroxydehydroepiandrosterone by fermenting or reacting dehydroepiandrosterone or a derivative thereof with microorganisms of the species Penicillium oxalicum or Aspergillus terreus or mycelium or extracts therefrom obtained when the microorganisms are in a stationary phase of growth. The invention process produces steroid compounds which are pharmacologically valuable substances.

A invenção relaciona-se a um processo para produzir 1.alpha.-hydroxydehydroepiandrosterone fermenting ou o dehydroepiandrosterone reagindo ou um derivative disso com os microorganisms do oxalicum do penicillium da espécie ou o terreus do aspergilo ou o mycelium ou os extratos obtiveram therefrom quando os microorganisms se realizam em uma fase estacionária do crescimento. O processo da invenção produz os compostos steroid que são substâncias pharmacologically valiosas.

 
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