The interaction between N-phosphoryl amino acids and nucleosides in aqueous
medium was studied and the products were analyzed on the basis of HPLC and
LC-MS-MS techniques. The results demonstrated that peptides and oligonucle
otides were simultaneously formed. Different selectivities were observed be
tween the reaction of various kinds of N-phosphoryl amino acids and differe
nt nucleosides, The results gave some clue for the chemical characteristics
of the origin of primordial genetic code.