Reduction of methyl 3β-acetoxy-6-oximinodinorcholanate using sodium in n-propyl alcohol, and acetylation, gave 6α-acetamido-3β-acetoxydinorcholanic acid; treatment with lithium aluminum hydride in tetrahydrofuran provided 3β,22ξ-dihydroxydinorcholan-6-one. High-pressure hydrogenation of methyl 3β-acetoxy-6-nitro-5-dinorcholenate, using palladium black as catalyst in acetic acid medium, afforded methyl
                                    使用
钠在正
丙醇中还原 3β-乙酰氧基-6-
肟基二降
胆酸甲酯,然后乙酰化,得到 6α-乙酰
氨基-3β-乙酰氧基二降
胆酸;在
四氢呋喃中用
氢化铝锂处理得到 3β,22ξ-dihydroxydinorcholan-6-one。以
钯黑为催化剂,在
乙酸介质中,3β-乙酰氧基-6-硝基-5-二降
胆酸甲酯高压加氢得到6ξ-乙酰
氨基-3β-乙酰氧基-5α-二降
胆酸甲酯。在相同条件下,3β-acetoxy-6-nitro-5-cholestene 催化加氢生成 6β-acetamido-3β-acetoxy-5α-cholestane 和 6ξ-acetamido-3β-acetoxy-5β-cholestane。