The Use of Butane Diacetals of Glycolic Acid as Precursors for the Synthesis of the Phytotoxic Calmodulin Inhibitor Herbarumin II
作者:Elena Díez、Darren J. Dixon、Steven V. Ley、Alessandra Polara、Felix Rodríguez
DOI:10.1002/hlca.200390314
日期:2003.11
The total synthesis of phytotoxic nonenolide herbarumin II (1) has been achieved by implementation of butane diacetal (BDA)-desymmetrised glycolate building blocks. Three of the four stereogenic centres present in the key coupling fragments were generated from both enantiomeric forms of the BDA building block in highly diastereoselective alkylation and aldol reactions.
通过实施丁二缩醛(BDA)-不对称的乙醇酸酯结构单元,已实现了具有植物毒性的壬烯内酯类香叶素II(1)的总合成。关键偶联片段中存在的四个立体异构中心中的三个是由BDA结构单元的对映体形式在高度非对映选择性烷基化和醛醇缩合反应中生成的。