作者:Chisato Mukai、Naoki Miyakoshi、Miyoji Hanaoka
DOI:10.1021/jo0104532
日期:2001.8.1
The first and stereoselective total syntheses of (-)-ichthyothereol (1) and its acetate ((+)-2) were achieved by incorporation of the two chiral centers of diethyl L-tartrate. The starting diethyl L-tartrate was converted into trans-2-ethynyl-3-hydroxytetrahydropyran 14 in a stereoselective manner via the endo mode cyclization of the epoxy-alkyne derivative 12. The alcohol 12 was then transformed into
(-)-ichthyothereol(1)及其乙酸盐((+)-2)的第一和立体选择性总合成是通过引入L-酒石酸二乙酯的两个手性中心实现的。起始L-酒石酸二乙酯通过环氧炔烃衍生物12的内模环化以立体选择性方式转化为反式-2-乙炔基-3-羟基四氢吡喃14。然后将醇12转化为(E)-碘代烯烃衍生物15 ,它在Stille条件下与衍生自相应的1-trimethylsilyl-1,3,5-heptyne(18)的1-tributylstannyl-1,3,5-heptyne(19)进行偶联反应,生成全部目标天然产物的碳框架。在常规条件下对偶联产物20进行化学修饰,完成了(-)-鱼硬脂醇(1)及其乙酸酯((+)-2)的第一次全合成。