Constituents of Persea japonica

A new sesquiterpene, machikusanol (1), together with γ-eudesmol, carissone, γ-selinene, isoboldine, corytuberine, (+)-epi-syringaresinol, β-sitosterol, stigmasterol, β-sitosteryl glucoside, and stigmasteryl glucoside, was isolated from the xylem of Persea japonica. The structure of 1 was elucidated by spectral analysis.