Biotechnological production of diols

A method for the production of a trans-diol or a cis-diol or a hydroxyketone comprising the step(s)

• (i) conversion of a trans-diol or a cis-diol to a hydroxyketone catalyzed by an enzyme, which is encoded by a nucleic acid sequence of SEQ ID NO:
• 1 or a nucleic acid sequence having at least 90% sequence identity to SEQ ID NO:
• 1, or wherein the enzyme comprises the amino acid sequence of SEQ ID NO:
• 2, or an amino acid sequence having at least 90% sequence identity to SEQ ID NO:
• 2, and/or
• (ii) conversion of a hydroxyketone to a trans diol or a cis-diol catalyzed by an enzyme as defined in step (i);
• and
• wherein the two hydroxyl groups of the trans-diol and/or the cis-diol is/are attached to an aliphatic ring system comprising 2 to 4 bridged or non-bridged rings;
• wherein the trans-diol is (8R,9R)-trans-cedrene diol, the cis-diol is (8R,9S)-cis-cedrene diol and the hydroxyketone is cedrene hydroxyketone.