STEREOCHEMICAL STUDIES:I. CONFIGURATIONS OF SOME 4-AZACHOLESTANES

Abstract
The Beckmann rearrangement of the oxime of A-nor-5β-cholestan-3-one gave 4-aza-5β-cholestan-3-one; the isomeric lactam obtained by the reduction of the oxime of 5-oxo-3,5-seco-A-norcholestan-3-oic acid with sodium in alcohol must consequently be 4-aza-5α-cholestan-3-one. Other methods of reducing the oximino acid afforded hydroxamic acids. 4-Aza-5α- and 4-aza-5β-cholestane were obtained by reduction of the appropriate lactam or hydroxamic acid.