Abstract
Oxygenated lanosterol derivatives, which were isolated from Ganoderma lucidum (Polyporaceae) or their derivatives obtained by chemical conversion, were tested for their effect on cholesterol biosynthesis from 24, 25-dihydrolanosterol by rat hepatic subscellular 10, 000 x g supernatant fraction. The sterol (VI, 40 μM) with 7-oxo and 15α-hydroxy groups potently inhibited the synthesis of cholesterol from [24, 25-3H]-24, 25-dihydrolanosterol (18 μM).