Cyanocuprate-mediated intramolecular biaryl couplings applied to an ellagitannin. Synthesis of (+)-O-permethyltellimagrandin II
摘要:
Generation of an intramolecularly tethered, nonracemic diaryl cuprate followed by its oxidation with ground state oxygen at -78 degrees leads to a biaryl precursor to an ellagitannin. Subsequent attachment of the appropriate glucose unit completes the synthesis of the title compound.
Cyanocuprate-mediated intramolecular biaryl couplings applied to an ellagitannin. Synthesis of (+)-O-permethyltellimagrandin II
摘要:
Generation of an intramolecularly tethered, nonracemic diaryl cuprate followed by its oxidation with ground state oxygen at -78 degrees leads to a biaryl precursor to an ellagitannin. Subsequent attachment of the appropriate glucose unit completes the synthesis of the title compound.