Synthetic studies toward C-1027 chromophore: construction of a highly unsaturated macrocycle
作者:Takeo Sasaki、Masayuki Inoue、Masahiro Hirama
DOI:10.1016/s0040-4039(01)00959-5
日期:2001.7
Construction of the highly unsaturated macrolactone of C-1027 chromophore (1) was investigated. Coupling of three fragments (2, 3, 4) led to the seco-acids in a concise manner. The protecting groups on the seco-acids influenced the yield of macrolactonization, and efficient conversion from acetonide 13 to lactone 15 was achieved using the Corey–Nicolaou protocol. The desired atropisomer thus obtained
研究了C-1027发色团(1)的高度不饱和大内酯的构建。耦合的三个片段(2,3,4导致)开环以简明的方式-acids。癸二酸上的保护基团影响了大内酯化的收率,使用Corey-Nicolaou方案可实现从丙酮化物13到内酯15的有效转化。由此获得的期望的阻转异构体被转化为三醇18a,其将在C-1027生色团的总合成中用作重要的中间体。