MnO2-TMSCl/AcCl-AcOH system as the key step has been described. Furthermore, the application of this reaction paving a way to synthesize 3β,21-diacetoxy -16α,17α-epoxy-pregnan-20-one - a potent precursor towards the synthesis of a series of D-ring fused steroidal γ-butyrolactones has also been illustrated. The work highlights a convenient approach in constructing a D-ring fused steroidal γ-butyrolactone
使用高产率的
金属介导的C,从大量的20-
氧杂
戊烷,5,6-二
氢孕烯醇酮乙酸酯中合成了一个新的D环稠合的甾体
γ-丁内酯,3β-羟基-5,6-二
氢-17β-甲
氧基pregnan-21,16α-甲内
酯已经描述了以MnO 2 -
TMSCl / AcCl-AcOH系统为关键步骤的-21官能化反应。此外,该反应的应用还为合成3β,21-
二乙酰氧基-16α,17α-环
氧-pregnan-20-one(一种合成一系列D环稠合的甾体
γ-丁内酯的有效前体)铺平了道路被说明。这项工作强调了从丰富的20-
氧类
固醇构建D环稠合类
固醇γ-丁内酯系统的便捷方法,该类
固醇可能在非类
固醇循环系统中具有普遍适用性。