A stereoselective synthesis of (+/-)-decarestrictine L (1) from protected pentane-1,4-diol (2) is described. The key intermediate, tetrahydropyran-3-one 5a, was obtained by a tandem intramolecular carbenoid insertion and ylide rearrangement reaction.
A stereoselective synthesis of (+/-)-decarestrictine L (1) from protected pentane-1,4-diol (2) is described. The key intermediate, tetrahydropyran-3-one 5a, was obtained by a tandem intramolecular carbenoid insertion and ylide rearrangement reaction.
Stereoselective synthesis of tetrahydropyran-3-ones by rearrangement of oxonium ylides generated from metal carbenoids
作者:J. Stephen Clark、Gavin Whitlock、Shende Jiang、Ngozi Onyia
DOI:10.1039/b307858m
日期:——
The synthesis of tetrahydropyran-3-ones by copper-catalysed reactions of diazo ketone tethered allylic ethers has been explored. Product distribution can be explained by the intermediacy of a free ylide or direct rearrangement of a metal-bound ylide equivalent.