Total Synthesis of Russuphelol: A Case of Mistaken Chirality
作者:M. Quamar Salih、Christopher M. Beaudry
DOI:10.1021/ol502459p
日期:2014.9.19
The chlorohydroquinone tetramer, russuphelol, does not have stereocenters; however, it was reported as a chiral optically active substance with stable enantiomeric conformations. The natural product is synthesized in six steps and 14% overall yield. Synthetic material was used to experimentally investigate its chiral properties.
Regioselective Synthesis of Unsymmetrical <i>C</i>-Aryl Glycosides Using Silicon Tethers as Disposable Linkers
作者:David E. Kaelin、Steven M. Sparks、Hilary R. Plake、Stephen F. Martin
DOI:10.1021/ja0375582
日期:2003.10.1
regiochemistry of Diels-Alderreactions between substituted benzynes and glycosyl furans as a key step in the syntheses of unsymmetrical representatives of three major groups of C-aryl glycosides. The cycloaddition precursors were readily prepared by O-alkylation of substituted phenols with various sugar-substituted furylsilane derivatives. Selective deprotonation on the benzene ring of these ethers led to a