The stereochemistry of osmylation of a steroidal 6-ene is shown to be modified by the presence of a 3α,5-cyclopropane ring leading to predominantly β-face attack. Hydroboronation affords the 6α-,7α-, and 7β-alcohols.
J. R. Hanson, P. B. Hitchcock, P. B. Reese and A. Truneh, J. Chem. Soc., Perkin Trans. 1, 1988, 1465 DOI: 10.1039/P19880001465
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