Dehydrobromination of 22,23-dibromo-5β-ergostane yields the 22,24(28)-diene; application of this observation furnishes a novel, short route to ergosta-5,7,22,24(28)-tetraen-3β-ol.
A. B. Garry, J. M. Midgley, W. B. Whalley and B. J. Wilkins, J. Chem. Soc., Chem. Commun., 1972, 167a DOI: 10.1039/C3972000167A
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