carboxylic acid, followed by separation of the resultant diastereomers, hydrolysis of the ester, and dehydration of the 1,2-diol to the oxirane. This new optical resolution method was applied to the synthesis of SM-9164, a biologically active enantiomer of antifungal agent SM-8668. Thus, the optically active isomer of SM-8668 was prepared efficiently in eight steps from m-difluorobenzene.
苏-2-(2,4-二
氟苯基)-2-[1-(甲
硫基)乙基]
环氧乙烷的外消旋体通过与手性
羧酸反应分离成两个对映体,然后分离得到的非对映体,
水解酯,并将 1,2
-二醇脱
水成
环氧乙烷。这种新的光学拆分方法被应用于抗真菌剂 SM-8668 的
生物活性对映体 SM-9164 的合成。因此,SM-8668 的旋光异构体可以通过八步从间二
氟苯有效地制备。