The carrying out of enol acetylation on a variety of 1,4,6-trien-3-ones to form 1,3,5,7 tetraene of the formula
in which R is selected from the group consisting of C8H16OH; C8H16O2CCH3, C8H16O2C
and C5H8O2CH3 and in which R'CO- is the residue of an acylating agent. From these compounds 1-alpha-hydroxy-7-dehydro-steroids are obtained.
The compounds are intermediates used in the preparation of vitamin D3 metabolites such as 1-delta-25-dihydroxyvitamin D3 and 1-delta-hydroxyvitamin D3.
对各种 1,4,6-
三烯-3-酮进行烯醇乙酰化反应,生成式中的 1,3,5,7-四烯。
其中 R 选自 C8H16OH、C8H16O2CCH3、C8H16O2C
和 C5H8O2CH3 所组成的组,其中 R'CO- 是酰化剂的残留物。从这些化合物中可以得到 1-α-羟基-7-脱氢类
固醇。
这些化合物是用于制备
维生素 D3 代谢物(如 1-δ-25-二羟基
维生素 D3 和 1-δ-羟基
维生素 D3)的中间体。