Aryl <i>H-</i>Phosphonates 17: (<i>N-</i>Aryl)phosphoramidates of Pyrimidine Nucleoside Analogues and Their Synthesis, Selected Properties, and Anti-HIV Activity
for the preparation of nucleoside 5′-(N-aryl)phosphoramidate monoesters 4 was developed. It consisted of a condensation of the corresponding nucleoside 5′-H-phosphonates with aromatic- or heteroaromatic amines promoted by diphenyl phosphorochloridate, followed by oxidation of the produced H-phosphonamidates with iodine/water. 5′-(N-Aryl)phosphoramidate monoesters derived from 3′-azido-3′-deoxythymidine