SCHEDULED MAINTENANCE
4α-Hydroxycholecalciferol has been prepared from cholest-5-ene-3β-4α-diyl diacetate via its Δ7-derivative. Attempts to convert cholest-5-ene-3β-4β-diyl diacetate into its Δ7-derivative were unsuccessful.
B. Pelc, J. Chem. Soc., Perkin Trans. 1, 1974, 1436 DOI: 10.1039/P19740001436
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