Extractives of fungi. V. Microbial transformation products of piperitone

Abstract

The products obtained from the transformation of (�)-piperitone (1) by Pro-actinomyces roseus, a species of Fusarium, and Aspergillus niger have been examined. Major transformation products include (�)-trans-6- hydroxy-p-menth-1-en-3-one (2) and (�)-7-hydroxy-p-menth-1-en-3-one (3); a minor transformation product has been tentatively identified as (�)-8-hydroxy-p-menth-1-en-3-one (4).