Research Article

Bioactive Phytochemicals: Efficient Synthesis of Optically Active Substituted Flav-3-enes and Flav-3-en-3-o-R Derivatives

Scheme 4

Synthesis of flav-3-en-3-o-R substituents. Reagents and conditions: (i) DMP, CH2Cl2, H2O, 95%; (ii) Yb(OTf)3, MeOH, reflux, 49%.