Abstract
The ene reactions of a (Z)-Δ17(20)-steroidal olefin with acetylenic aldehydes in the presence of Me2AlCl produce (20S,22R)-(erythro)-22-hydroxy-23,24-acetylenic steroid side chains with high diastereoselectivity and diastereofacial selectivity.
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More From: Journal of the Chemical Society, Chemical Communications
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