Patent ID: 8883468

Claim:
A process of producing a compound of formula (I) wherein the dotted line together with the carbon-carbon bond between C-3a and C-8a represents a double bond and the dotted line together with carbon-carbon bond between C-8a and C-8 represents a single bond, and C-3 and C-8 are (S)-configurated, and C-5 is (R)-configurated; or the dotted line together with the carbon-carbon bond between C-8 and C-8a represents a double bond and the dotted line together with carbon-carbon bond between C-3a and C-8a represents a single bond, and C-3 and C-3a are (S)-configurated, and C-5 is (R)-configurated; by reacting laccase and a material comprising α-guaiene and/or α-bulnesene in the presence of an oxygen source to form the compound of formula (I).