Enol acetylation is carried out on a variety of 1,4,6-trien-3-ones to form 1,3,5,7 tetraene structures from which 1.alpha.-hydroxy-7-dehydro steroids are obtained. The compounds are intermediates used in the preparation of vitamin D.sub.3 metabolites such as 1.alpha.,25-dihydroxyvitamin D.sub.3 and 1.alpha.-hydroxyvitamin D.sub.3.
Enol乙酰化是在各种1,4,6-
三烯-3-酮上进行的,形成1,3,5,7-四烯结构,从中获得1.alpha.-羟基-7-脱氢类
固醇。这些化合物是用于制备
维生素D.sub.3代谢物的中间体,如1.alpha.,25-二羟基
维生素D.sub.3和1.alpha.-羟基
维生素D.sub.3。