A new method for the preparation of optically active γ-substituted α,β-unsaturated δ-lactones as the useful chiral building blocks for natural product synthesis, starting from l-(+)-arabinose and synthesis of two monoterpene lactones, (+)-boschnia-lactone and (+)-isoiridomyrmecin, by the use of these building blocks are described.
一种新的制备旋光性γ-取代的α,β-不饱和δ-内酯作为天然产品合成有用的手性结构单元的新方法,从1-(+)-
阿拉伯糖和两个单萜内酯(+)的合成开始通过使用这些结构单元,描述了-波希尼亚-内酯和(+)-异iridomyrmecin。