An efficient catalytic synthesis of 1,8-dioxo-octahydroxanthene derivatives with anti-oxidant scanning

Abstract

ECO-FRIENDLY aldehydes and dimedone one pot using synthesis non-toxic, is developed easily prepared for 1,8-dioxo-octahydroxanthenes and recyclable catalyst (Sm from2O3/ SiO2) as a silica supported rare earth element under solvent-free conditions. four of the synthesized compounds showed promising ABTS (3i, 68.7; 3b, 59.2; 3h, 50.2 inhibition%) compared with ascorbic acid.