作者:K. C. Nicolaou、Georgios Vassilikogiannakis、Wolfgang Mägerlein、Remo Kranich
DOI:10.1002/1521-3765(20011217)7:24<5359::aid-chem5359>3.0.co;2-z
日期:2001.12.17
The total synthesis of the recently reported marine natural product colombiasin A (1) and determination of its absolute configuration are reported. Two Diels-Alder cycloadditions and a palladium-catalyzed rearrangement are employed as key reactions to construct the tetracyclic framework of the target molecule. The enantioselective synthesis of colombiasin A utilizes Mikami's [(S)-BINOL-TiCl2] catalyst
报道了最近报道的海洋天然产物哥伦比亚菌素A(1)的全合成及其绝对构型的确定。两个Diels-Alder环加成反应和钯催化的重排反应被用作构建目标分子的四环骨架的关键反应。哥伦比亚霉素A的对映选择性合成利用Mikami的[(S)-BINOL-TiCl2]催化剂在最初的Diels-Alder反应过程中不对称引入第一个手性中心,并与含溴衍生物的X射线晶体学分析相结合,导致天然产物的绝对构型的分配。