Nitro-steroids. Part VI. The structure of 5α-cholestano[2,3-c]furazan 2′-oxide, and the preparation of 6-nitro-5α-cholestan-7-ones
Abstract
The structure of 5α-cholestano[2,3-c]furazan 2′-oxide, obtained from 2,3-bishydroxyimino-5α-cholestane, is established by its preparation from 2-nitro-5α-cholest-2-en-3-ol. Base-catalysed nitration of 5α-cholestan-7-one gives 6α- and 6β-nitro-derivatives, which adopt keto- rather than enol forms.