Pubescenone, a new marasmane sesquiterpenoid from the mushroom Lactarius pubescens

A new marasmane sesquiterpenoid, named pubescenone (1), was isolated from the fruiting bodies of the basidiomycete Lactarius pubescens together with a known sesquiterpene aldehyde, lactaral (2). The structure of pubescenone (1) was elucidated on the basis of extensive spectral methods (MS, IR, 1D and 2D NMR experiments).