3β-Hydroxy-5α-androstan-17-one, (+)-camphor, and (–)-menthone have been converted into the corresponding spiro-hydantoins by the Bucherer synthesis. The reaction failed with cholestan-7-one, cholest-4-en-3-one, and 17α,21-dihydroxy-5α-pregnane-3,11,20-tri-one 3,20-disemicarbazone. Efforts to obtain steroid dihydantoins were unsuccessful. Deamination of camphane and menthane amino-acids provides evidence of their configurations.
R. J. W. Cremlyn and M. Chisholm, J. Chem. Soc. C, 1967, 1762 DOI: 10.1039/J39670001762
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