5Clercq E D. Clinical potential of the acyclic nucleoside phosphonates cidofovir, adefovir, and tenofovir in treatment of DNA virus and retrovirus infections[J]. Clin Microbiol Rev, 2003, 16(4): 569 - 596.
6Edward J, Pack J R, Bonnie B, et al. An HPLC procedure for the enantiomeric purity of an optically active cytosine analogue using ligand exchange[J]. Chirality, 1990, 2(4): 275 - 279.
7De Clercq E.Clinical potential of the acyclic nucleoside phos phonates cidofovir,adefovir,and tenofovir in treatment of DNA virus and retrovirus infections[J].Clin Microbiol Rev,2003,16(4):569
8Bronson J J,Ghazzouli I,Hitchcock M J.Synthesis and antiviral activity of the nucleotide analogue (S)-1-[3-hydroxy2-(phosphonyl-methoxy) propyl] cytosine[J].J Med Chem,1989,32(7):1457
9Vemishetti P,Biochemistry P R,Howell H G.Process for the preparation of nucleotides[P].US 5591852,1995-01-07
10Munger J R,Rohloff J C.Nucleotide analog composition and synthesis method[P].WO9905150,1999-02-04