A Facile and Practical Total Synthetic Route for Ampelopsin F and Permethylated ε-Viniferin

Stilbene dimers (+/-)-ampelospin F and permethylated (+/-)-epsilon-viniferin were synthesized by a practical synthetic route with overall yields of 10% and 27% . This route involves triethylsilane-mediated reduction of the 2,3-diarylbenzofuran,, and BBr3-mediated one-pot demethylation and cascade intramolecular cyclization reaction.