Green synthesis and antioxidant activity of novel series of benzofurans from euparin extracted of .

A novel class of benzofuran derivatives is prepared from the isocyanide-based MCR, euparin and aldehydes in the presence of ZnO-nanorods as a catalyst in excellent yields at room temperature under solvent-free conditions as a green reaction medium. Also, the antioxidant activities of some synthesised compounds such as , , and were evaluated by DPPH radical scavenging and ferric reduction activity potential (FRAP) assays. Compound , was shown moderate radical scavenging activity and very good reducing activity compared to standards (BHT and TBHQ).