One-pot pseudo three-component condensation reaction of arylglyoxal monohydrates with 1-ethyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione for the synthesis of new pyrano[2,3-d:6,5-d’]dipyrimidines as HIV integrase inhibitor-like frameworks using two different environmentally benign catalytic systems

摘要: Simple, selective and highly efficient one-pot synthesis of new 5-aryloyl-1,9-diethyl-2,8-dithioxo-2,3,5,7,8,9-hexahydro-4H-pyrano[2,3-d:6,5-d’]dipyrimidine-4,6(1H)-dione derivatives has been developed using pseudo three-component reaction arylglyoxal monohydrates with 1-ethyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione in the presence a catalytic amount 1,4-diazabicyclo[2.2.2]octane (DABCO) or ZrOCl2.8H2O as green catalysts ethanol at 50 °C. The significant features present work are simplicity, regio- chemoselectivity, short times, good to excellent yields, avoiding use any hazardous catalyst solvent, easy work-up procedure. structures compounds were confirmed by FT-IR, 1H NMR, 13C NMR spectroscopy data also microanalysis. synthetic strategies reported herein can be regarded methods for preparation some HIV integrase inhibitor-like especially V-165 analogs.