2-Amino-6-chloropurine is a precursor in the synthesis of nucleoside analogs with antiviral activity against Epstein-Barr virus (EBV) and human herpes virus 6 (HHV-6).1
1.Qiu, Y.-L., Ksebati, M.B., Ptak, R.G., et al.(Z)- and (E)-2-((hydroxymethyl)cyclopropylidene)methyladenine and -guanine. New nucleoside analogues with a broad-spectrum antiviral activityJ. Med. Chem.41(1)10-23(1998)