Synthesis and Antiviral Bioactivities of α-Aminophosphonates Containing Alkoxyethyl Moieties

A simple, efficient, and general method has been developed for the synthesis ofvarious α-aminophosphonate derivatives 4a-4l by treatment of substituted benzaldehydes andaniline with bis(2-methoxyethyl)- or bis(2-ethoxyethyl) phosphite under microwaveirradiation without solvents and catalysts. The products were characterized by elementalanalysis, IR, 1H-NMR, 13C- and 31P-NMR spectra. The X-ray crystallographic data of therepresentative compound 4l was determined. The new α-aminophosphonate derivatives werefound to possess moderate to good antiviral activity.