Intramolecular Formal <i>oxa</i>-[3 + 3] Cycloaddition Approach to the ABD System of Phomactin A
作者:Kevin P. Cole、Richard P. Hsung
DOI:10.1021/ol030115i
日期:2003.12.1
The ABD-ring of phomactin A was synthesized using an intramolecular formal oxa-[3 + 3] cycloaddion of an alpha,beta-unsaturated iminium salt tethered to a 1,3-diketone. This represents the first time that the 12-membered ring has been formed simultaneously with the 1-oxadecalin and should afford a facile route to the challenging structure of phomactin A. [reaction: see text]