Method for preparing 1.alpha.-hydroxyvitamin d compounds

Details Method for preparing 1.alpha.-hydroxyvitamin d compounds Method for preparing 1.alpha.-hydroxyvitamin d compounds

C - Chemistry, Metallurgy

07

C

260/640.6

C07C 401/00 (2006.01)

Patent

CA 1233188

Abstract The invention relates to a process for separating 1.alpha.- hydroxyvitamin D compounds from their corresponding 1.alpha.- hydroxy-5,6-trans isomers in a mixture thereof by treating the mixture with a dienophile and then separating the resulting dienophil-adduct of the 1.alpha.-hydroxy-5,6-trans vitamin D isomer from the unreacted 1.alpha.-hydroxyvitamin D compound.

493352

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