[3 + 2]-Annulation Reactions of Chiral Allylsilanes and Chiral Aldehydes. Studies on the Synthesis of Bis-tetrahydrofuran Substructures of Annonaceous Acetogenins
作者:Eric Mertz、Jennifer M. Tinsley、William R. Roush
DOI:10.1021/jo0511290
日期:2005.9.1
Double asymmetric [3 + 2]-annulation reactions of chiral β-silyloxyallylsilanes with chiral 2-tetrahydrofuranyl carboxaldehydes have been studied, leading to the stereocontrolled synthesis of six diastereomeric bis-tetrahydrofuran structures corresponding to the core subunits of members of the Annonaceous acetogenin family of natural products. Transition-state models are proposed to account for the
研究了手性β-甲硅烷氧基烯丙基硅烷与手性2-四氢呋喃基甲醛的双不对称[3 + 2]环化反应,导致立体控制合成了六个非对映体双-四氢呋喃结构,这些结构对应于环己酮产乙酸甘油酯家族成员的核心亚基。天然产物。提出过渡态模型以说明双立体分化[3 + 2]环化反应的立体选择性。