1984 Volume 32 Issue 5 Pages 1912-1918
Starting from 3β-acetoxy-25, 26, 27-trinorlanost-8-en-24-al (1), eight lanosterol analogs (10-17) with longer side chains side chains than that of lanosterol were synthesized by Wittig reaction followed by catalytic hydrogenation. Cholesterol biosynthesis was examined in rat hepatic subcellular preparation (S10) incubated with [24-3H]-lanosterol in the presence of each of the eight lanosterol analogs. Some of the analogs (10 and 12) caused slight inhibition, but 16 and 17 showed no inhibitory effect. The structure-inhibitory activity relationship of lanosterol analogs on cholesterol biosynthesis from lanosterol is discussed.