Irradiation of (E)-5α-cholest-1-en-3-one oxime in protic or aprotic solvent with a low pressure mercury arc gave 4α′,5-dihydro-A-nor-5α-cholestano[2,1-c]isoxazole, the molecular structure of which was established by X-ray analysis, and a mechanism, which accommodates in stereospecificity of this new photo-rearrngement proved by deuterium labelling studies, is suggested.
在质子或非质子溶剂中用低压
汞弧照射(E)-5α-胆甾-1-烯-3-酮
肟,得到4α',5-二氢-A -nor-
5α-胆甾烷[2,1- c提出了通过X射线分析确定其分子结构的]
异恶唑,并通过
氘标记研究证明了一种适应这种新的光重新排列的立体特异性的机理。