Abstract:Ten novel salicylaldehyde-ɑ-aminophosphonate derivatives were synthesized through the condensation reaction (microwaved-assisted method) and NaBH4 as the reduction agent, using ɑ-aminophosphate derivatives and o-hydroxybenzaldehydes as the starting materials. All of the target compounds were characterized by IR, 1H-NMR, 13C NMR and HRMS. The optimum conditions were as following: microwaved reaction at 25℃,600W for 25min. The antitumor activity of the target compounds was determined by MTT method. The results showed that the target compounds had inhibitory effects against three kinds of tumor cells: human acute myeloid leukemia cells (KGla), human hepatoma cells (HepG2), cervical cancer cells (Hela). Among the ten compounds, 3E, 3F showed a good inhibitory activity against HepG2.