A Highly Efficient Asymmetric Synthesis of Homotaurine Derivatives via Diastereoselective Ring-Opening of γ-Sultones
作者:Dieter Enders、Wacharee Harnying
DOI:10.1055/s-2004-831256
日期:——
A highly efficient asymmetric synthesis of α,γ-substituted γ-amino sulfonates via diastereoselective ring-opening of enantiopure α,γ-substituted γ-sultones with inversion of configuration at the attacked γ-carbon is described. In the key step sodium azide is used as the nucleophilic nitrogen source. Secondary and tertiary γ-amino sulfonates were synthesized in very good yields and excellent diastereo- and enantiomeric excesses (de, ee ≥98%).
描述了一种高效的不对称合成α,γ-取代的γ-氨基磺酸酯的方法,该方法通过对手性纯的α,γ-取代的γ-硫内酯进行选择性开环,在攻击的γ-碳处反转构型。在关键步骤中使用了叠氮化钠作为核亲和氮源。合成的次级和三级γ-氨基磺酸酯具有非常好的产率和优异的非对映体和对映体过量(de, ee ≥98%)。