Novel Sesquiterpenes from the Mycelial Cultures of Dichomitus squalens

Four novel sesquiterpenes, 5‐hydroxydichomitol ( 1 ), dichomilludol ( 2 ), 3 β ,13‐dihydroxyledol ( 3 ), and 2 β ,3 β ,13‐trihydroxyledol ( 4 ), were isolated along with 2 β ,13‐dihydroxyledol ( 5 ) from the AcOEt‐soluble fraction of the mycelial solid cultures of Dichomitus squalens. Their structures were determined on the basis of spectroscopic analyses. The previously assigned structure of dichomitol was revised.