Abstract
Abstract 1α-Phenyl-5α-cholestan-3-one was prepared from 5α-cholestan-1-en-3-one by treatment with the Grignard reagent in the presence of copper (I) chloride. In the mono- and dibromination of 1α-methyl-3-keto steroids, it was found that the position and configuration of bromine were the same as in the case of the 1-nonsubstituted 3-keto steroid. The A-ring conformations of these bromoketones were studied by means of NMR and ORD.
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