title: Synthesis of some 5'-amino-2',5'-dideoxy-5-iodouridine derivatives and their antiviral properties against herpes simplex virus.
abstract: In an attempt to improve the antiviral efficacy of 5'-amino-2',5'-dideoxy-5-iodouridine (AIdU) the N-acetyl and N,3'-O-diacetyl derivatives were prepared. N-Acetylation of AIdU increased its ability to inhibit the phosphorylation of thymidine by the deoxypyrimidine kinase of herpes simplex virus type 1 (HSV1) while diacetylation had the converse effect. The affinity of the corresponding compounds containing uracil or thymine for virus deoxypyrimidine kinase was also determined. A range of N-acyl-, N-sulphonyl- and N,3'-O-diacyl- derivatives of AIdU were synthesized; enhanced inhibition of deoxypyrimidine kinase by a number of these compounds was observed. The previous observation that 5'-azido-2',5'-dideoxy-5-iodouridine has antiherpetic activity in vivo led us to investigate its 3'-O-acetyl derivative as well as the corresponding compound containing uracil. None of the derivatives described showed antiviral activity in cell culture against HSV1; acylation failed to enhance the potency of AIdU against HSV1 in vivo.
mesh_terms: D000107:Acetylation; D000998:Antiviral Agents / Q000138:chemical synthesis / Q000494:pharmacology*; D007065:Idoxuridine / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000494:pharmacology; D018139:Simplexvirus / Q000187:drug effects* / Q000201:enzymology; D013329:Structure-Activity Relationship; D013937:Thymidine Kinase / Q000037:antagonists & inhibitors
chemical_list: D000998:Antiviral Agents; C021283:5'-amino-5-iodo-2',5'-dideoxyuridine; D013937:Thymidine Kinase; D007065:Idoxuridine