Rh(I)-Catalyzed Ring Opening of an IMDAF-Derived Oxabicyclo Cycloadduct as the Key Step in the Synthesis of (±)-<i>epi</i>-Zephyranthine
作者:Qiu Wang、Albert Padwa
DOI:10.1021/ol049348f
日期:2004.6.1
A new strategy for epi-zephyranthine has been developed that is based in part on an extraordinarily facile intramolecular Diels-Alder reaction of a 2-imido-substituted furan. By using a Rh(I)-catalyzed ring opening of the resulting oxabicyclic adduct, the cis-diol stereochemistry of epi-zephyranthine was established.