Catalytic Enantioselective Total Synthesis of (−)-Platyphyllide and Its Structural Revision
作者:Shiharu Hiraoka、Shinji Harada、Atsushi Nishida
DOI:10.1021/jo1003746
日期:2010.6.4
The catalytic asymmetric total synthesis of platyphyllide has been accomplished. A key highly substituted cyclohexene derivative has been obtained by the catalytic asymmetric Diels−Alder reaction of Danishefsky diene with an electron-deficient alkene. The Diels−Alder adduct was converted to a protected cyclohexane-1,3-dione in chiral form by catalytic Ito−Saegusa oxidation. Although the reported structure
已经实现了叶绿素的催化不对称全合成。通过Danishefsky二烯与缺电子烯烃的催化不对称Diels-Alder反应,已获得了关键的高度取代的环己烯衍生物。Diels-Alder加合物通过催化的Ito-Saegusa氧化转化为手性形式的受保护的环己烷-1,3-二酮。尽管已成功合成了所报道的叶绿素的结构,但旋光性与天然化合物的旋光性相反。天然(-)叶绿素的绝对构型被修改为(6 S,7 S)-对映体。