申请人:TAI Dar-fu
公开号:US20130096324A1
公开(公告)日:2013-04-18
The present invention relates to a process of preparation of optically active antrocin. At first, to introduce the correct configuration of trans-decalone, alkyl aluminum/TMSCN was used to react with decalenone. The resulting racemic nitrile-decalone was resolved with chiral diol by ketalization to produce two chromatography separable diasteromers. After a simple column chromatography, optically pure compounds were obtained. Formylation was a critical step for the lactone formation. The rest of the synthesis is straight forward through oxidation and olefination. Accordingly, the total synthesis was completed in 10 steps with 7% overall yield from commercially available 6-methoxy-2-tetralone.
本发明涉及一种制备光学活性antrocin的过程。首先,使用烷基铝/TMSCN引入反式十环酮的正确构型,与十环酮反应得到外消旋的腈基十环酮,再通过缩酮反应与手性二醇反应,得到两个可通过色谱分离的对映异构体。经过简单的柱层析后,得到光学纯的化合物。甲酰化是内酯形成的关键步骤。其余的合成步骤通过氧化和烯丙基化是直截了当的。因此,从商业可得的6-甲氧基-2-四环酮开始,经过10个步骤,总产率为7%,完成了总合成。