4,4-dimethyl-5-alpha-ergosta-8,24(28)-dien-3-beta-ol From the Fungus Marasmius-oreades

From the fruit body of the fungus Marasmius oreades (family Tricholomataceae), 4,4-dimethyl-5-alpha-ergosta-8,24(28)-dien-3-beta-ol (1), probably a biogenetic precursor of ergosterol, has been isolated along with ergosterol. Its stereostructure has been established unequivocally by spectroscopic methods, including C-13 nuclear magnetic resonance