A Convergent Strategy for the Synthesis of Polycyclic Ethers by Using Oxiranyl Anions
作者:Takeo Sakai、Ai Sugimoto、Yuji Mori
DOI:10.1021/ol202467z
日期:2011.11.4
A new [X+2+Y]-type for the convergent synthesis of polycyclic ethers based on an oxiranyl anion strategy was developed. The sequence involves nucleophilic substitution of a triflate with an oxiranyl anion followed by 6-endo cyclization, ringexpansion, and reductive etherification. The protocol features a flexible approach toward trans-fused polycyclic arrays consisting of six- and seven-membered ether