Tetrahedron Letters p. 4145 - 4148 (1992)
Update date:2022-08-03
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17-Chlorosteroids, produced by template-directed halogenation of 9-fluoro 11-oxygenated cholestanols that are themselves produced by template methods, are converted to their 17-keto analogs in high yields (85-91%) after HCl elimination with DBU, followed by ozonolysis.
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