Abstract
The structure 1a proposed for flavidulol A, which was isolated from the mushroom Lactarius flavidulus IMAI, was revised to 1b based upon comparison with a synthetic specimen, as well as a difference nuclear Overhauser effect (NOE) experiment. As a consequence, the structures of flavidulols B (2a) and C (3a) were also revised to 2b and 3b, respectively. Flavidulol D (4) was newly isolated from the same mushroom, and its structure was elucidated as flavidulol A stearate on the basis of spectroscopic data.
