This invention provides a novel method for the preparation of optically active arylalykylsulfone derivatives, having a chiral center in the alkyl moiety in either the (R)- or the (S)-configuration. These optically active sulfones find use in the stereospecific synthesis of steroid or vitamin D compounds having chiral center at either carbon 24 or carbon 25 of the side chain. The method comprises the steps of reacting an optically active sulfinate ester having a chiral center at sulfur with a racemic alkyl Grignard reagent to obtain a mixture of diastereomeric sulfoxides, separating the mixture of diastereomeric sulfoxides, and oxidizing separately each of the diastereomers to obtain the desired optically active sulfone.
该发明提供了一种新颖的方法,用于制备具有手性中心的芳基烷基磺酰基衍
生物,其烷基基团中具有(R)-或(S)-构型。这些手性活性磺酰基化合物在立体特异性合成具有侧链碳24或碳25处手性中心的类
固醇或
维生素D化合物中发挥作用。该方法包括以下步骤:将具有
硫手性中心的光学活性
磺酸盐酯与外消旋烷基
格氏试剂反应,以获得两个非对映异构体的亚砜混合物,分离两个非对映异构体的亚砜混合物,并分别氧化每个非对映异构体以获得所需的光学活性磺酰基化合物。