作者:K. C. Nicolaou、Hanfeng Ding、Jean-Alexandre Richard、David Y.-K. Chen
DOI:10.1021/ja9093988
日期:2010.3.24
Echinopines A and B [(+)-1 and (+)-2], two naturally occurring compounds characterized with a unique [3.5.5.7] carbon framework, have been synthesized in both enantiomeric and racemic forms. Their total synthesis involves a novel intramolecular rhodium-catalyzed cyclopropanation (4 --> 16) and a samarium diiodide-mediated ring closure (3 --> 37).
Echinopines A 和 B [(+)-1 和 (+)-2] 是两种天然存在的化合物,具有独特的 [3.5.5.7] 碳骨架,已以对映体和外消旋形式合成。他们的全合成涉及新型分子内铑催化的环丙烷化反应 (4 --> 16) 和二碘化钐介导的闭环 (3 --> 37)。