A highly efficient total synthesis of (R)-(+)-muscopyridine by intramolecular [4+2] cycloaddition of bisketene
作者:Kie Suwa、Yasuko Morie、Yumiko Suzuki、Kiyoshi Ikeda、Masayuki Sato
DOI:10.1016/j.tetlet.2007.12.112
日期:2008.2
A highly efficient total synthesis of (R)-(+)-muscopyridine 1 has been accomplished in 12 steps with 40% overall yield. A highlight of the synthesis is the intramolecular [4+2] cycloaddition of bisketene to afford a bridged pyrone and ring transformation of the pyrone to afford pyridine derivatives.
(R)-(+)-muscopyridine 1的高效总合成已完成12个步骤,总产率为40%。合成的一个亮点是双烯酮的分子内[4 + 2]环加成反应,以提供桥连的吡喃酮,以及吡喃酮的环转化,从而提供吡啶衍生物。