An efficient, straightforward method for construction of the side chain of (22R)- and (22S)-22-alkyl-1α,25-dihydroxyvitamin D3 is described. The title compounds were synthesized by Lythgoe's procedure.
                                    描述了构建 (22R)- 和 (22S)-22-烷基-1α,25-二羟基
维生素 D3 侧链的有效、直接的方法。标题化合物通过Lythgoe's procedure合成。