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.
对 6-乙酰氧亚
氨基-3β-乙酰氧基胆甾烷-5α-醇
亚硝酸盐(I)的氧化铝诱导反应进行了研究,并得出了几种化合物。其中 II、III 和 IV 属于同一类化合物。根据光谱数据及其反应,初步推测它们的结构中含有 5α,6α-环氧基和 6β,7β-异亚硝基亚
氨基。V 和 VI 被确定为含有 5α-乙酰氧基和 6-氧代基团的另一种类型。通过与相关化合物的反应产物进行比较,推断出了这两类化合物的形成途径。