The α-configuration of the 1-methyl group in 1α,17α-dimethyl-17β-acetoxy-5α-androstan-3-one has been unambiguously confirmed (a) by dehydrogenation with 2,3-dichloro-5,6-dicyanobenzoquinone, and (b) by use of the paramagnetic shift reagent trisdipivalomethanatoeuropium(III). Ring A has been shown to possess a chair conformation.
B. Pelc and J. K. M. Sanders, J. Chem. Soc., Perkin Trans. 1, 1972, 1219 DOI: 10.1039/P19720001219
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