抄録
An alumina-induced reaction of 6-acetoximino-3β-acetoxycholestan-5α-ol nitrite (I) is examined and affords several kinds of compounds. Among them II, III and IV are belong to the same type of compound. From the spectral data and their reactions, the structures containing 5α, 6α-epoxy and 6β, 7β-isonitrosoimino groups are tentatively assumed for them. V and VI are identified to be another type containing 5α-acetoxy and 6-oxo groups. The formation pathways of both types of compounds are deduced by comparison with the reaction products of the relative compounds.
