STEROL CONSTITUENTS FROM 5 EDIBLE MUSHROOMS - PART III

Eight new sterols, 5 alpha,8 ha-epidioxy-(22E,24R)-23-methylergosta-6, 22-dien-3 beta-ol (1), 3 beta,5 alpha,9 hydroxy-(22E,24R)-23-methylerg osta-7,22-dien-6-one (2), 3 beta,5 alpha,9 alpha-trihydroxy-(24S)-ergo st-7-en-6 (3), 3 beta,5 alpha,9 alpha,14 pha-tetrahydroxy-(22E,24R)-er gosta-7,22-dien-6-one (4), (22E,24R)-ergosta-7,22-diene-3 beta,5 alpha ,6 alpha,9 alpha-tetrol (5), 5 alpha,9 alpha-epidioxy-3 beta-hydroxy-( 22E,24R)-ergosta-7,22-dien-6-one (6), 5 alpha,9 alpha-epidioxy-3 beta- hydroxy-(24S)-ergost-7-en-6-one (7) and 5 alpha,6 alpha-epoxy-(22E,24R )-ergosta-8,22-diene-3 beta,7 beta,14 alpha-triol (8), have been isola ted from five edible mushrooms, Lentinus edodes, Flammulina velutipes, Hypsizigus marmoreus, Pleurotus ostreatus and Pholiota nameko togethe r with fifteen known ones (9-23), of which two (16 and 17) are reporte d for the first time from a fungal source. The structures of these new compounds were elucidated on the basis of their spectral data.