Enantioselective [4 + 2] Cycloadditions of <i>o</i>-Quinone Methides: Total Synthesis of (+)-Mimosifoliol and Formal Synthesis of (+)-Tolterodine
作者:Carolyn Selenski、Thomas R. R. Pettus
DOI:10.1021/jo048703c
日期:2004.12.1
The first example of an enantioselectivecycloaddition of an o-quinone methide (o-QM) with a chiral enol ether is described along with the total synthesis of (+)-mimosifoliol and the formal synthesis of (+)-tolterodine. These syntheses exemplify a three-component, one-pot benzopyran approach for the construction of chiral benzylic junctions. Cycloadditions of various enol ethers and o-QMs are examined