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 concise enantioselective synthesis of the fungal metabolite (+)-decarestrictine L
作者:J. Stephen Clark、Thomas C. Fessard、Gavin A. Whitlock
DOI:10.1016/j.tet.2005.09.144
日期:2006.1
A stereoselective 10-step synthesis of the fungalmetabolite (+)-decarestrictine L from commercially available ethyl (R)-3-hydroxybutyrate is described in which tandem oxonium ylide formation and rearrangement is used to construct the tetrahydropyranyl core of the natural product.
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.