Abstract A series of new piperazine phosphoramide derivatives of 4-hydroxycoumarin were synthesized through a facile phosphorylating reaction starting from 4-hydroxycoumarin and various phosphorylating agents. The title compounds were characterized by IR, NMR, electrospray ionization-mass spectrometry, and high-resolution mass spectrometry, and their spectroscopic data were further analyzed to feature
Based on the phosphorylated reaction, an efficient general synthetic approach that provide facile, rapid and cheap access to a wide range of novel phosphoramide derivatives of paeonol has been developed. These analogues of paeonol are synthesized in high yields and elucidated by IR, HR MS, and NMR.