The Domino Oxa-Michael Addition–Aldol Reaction: Access to Variably Substituted Tetrahydroxanthenones
作者:Ulrike K. Ohnemüller (née Schmid)、Carl F. Nising、Martin Nieger、Stefan Bräse
DOI:10.1002/ejoc.200500887
日期:2006.3
Tetrahydroxanthenones represent the core of many natural products, most of which exhibit interesting biological activities. In the course of our synthetic efforts towards the total synthesis of the secalonic acids, which contain two of these tricyclic units, we have investigated the influence of substituents on the one-step dominooxa-Michaeladdition–aldolreaction leading to tetrahydroxanthenones