Transformed steroids |
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Authors: | A. A. Akhrem A. V. Kamernitskii V. A. Krivoruchko R. P. Litvinovskaya I. G. Reshetova |
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Affiliation: | (1) Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus, 220141 Minsk, ul. Kuprevicha, 5/2, Belarus |
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Abstract: |
1. | Together with the cis-hydroxylation of the 16-bond, the hydroxylation of the 3-acetates of the ethyl esters of 24-nor- and 21,24-dinorchola-5,16,20(22)-trien-3-ol-23-oic acids with aqueous KMnO4 inpyridine gives the 3,16, 22-triol 17,20-epoxides and their acetates. | 2. | The hydroxylation of the 21,24-dinor analogs with 30% H2O2 solution in the presence of OsO4 leads to a complex mixture of profoundly oxidized reaction products that are identified with difficulty. Only saponification of the carbethoxyl grouping occurs when alkaline H2O2 solution is used for the epoxidation. |
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