Constituents of the higher fungi. Part XIV. 3′,4′,4-Trihydroxypulvinone, thelephoric acid, and novel pyrandione and furanone pigments from Suillus grevillei(Klotsch) Sing. [Boletus elegans(Schum. per Fries)]
Abstract
Eight crystalline pigments have been isolated from the fungus Suillus grevillei. 3′,4′,4-Trihydroxypulvinone, a novel pyrandione, and a novel furanone are described, and thelephoric acid is identified as the cap skin pigment of Suillus grevillei var. badius