Ergosta-4,6,8,22-tetraen-3-one from the edible fungus, Pleurotus ostreatus (oyster fungus).

摘要

Three steroidal fractions were obtained from extracts of dried fruiting bodies of P. ostreatus. The major fraction was ergosterol and the second a mixture of 2 fatty acid esters of ergosterol which could not be fully resolved. The minor fraction contained ergosta-4,6,8,22-tetraen-3-one, which has not been recorded previously.