Journal of Antibiotics, vol. 59, no. 7, pp. 432-434
Methoxylaricinolic acid (1), a new sesquiterpene with drimane skeleton was isolated from the fruiting bodies of Stereum ostrea, together with the known compound laricinolic acid (2). The structure of 1 was determined as 12-methoxy-7-oxo-11-drimanoic acid on the basis of spectroscopic analysis.