Title: 5-halogeno-3'-fluoro-2',3'-dideoxyuridines as inhibitors of human immunodeficiency virus (hiv) - potent and selective anti-hiv activity of 3'-fluoro-2',3'-dideoxy-5-chlorouridine
Authors: Balzarini, Jan
Van Aerschot, Arthur
Pauwels, R
Baba, M
Schols, Dominique
Herdewijn, Piet
De Clercq, Erik #
Issue Date: May-1989
Publisher: Williams & wilkins
Series Title: Molecular Pharmacology vol:35 issue:5 pages:571-577
Abstract: The novel 5-chloro-, 5-bromo-, and 5-iodo-derivatives of 3'-fluoro-2',3'-dideoxyuridine (FddUrd), designated FddCIUrd, FddBrUrd, and FddIUrd, respectively, have been synthesized and evaluated for their antiretrovirus activity against human immunodeficiency virus (HIV) and murine Moloney sarcoma virus. All three 5-halogeno-FddUrd analogues inhibited HIV-1 replication in MT4 cells with an effective dose (ED50) of about 0.2-0.4 microM. However, FddCIUrd was markedly more selective in its anti-HIV-1 activity than FddBrUrd or FddIUrd. The selectivity index of FddCIUrd was similar to that of 3'-azido-2',3'-dideoxythymidine (AZT) when evaluated in parallel (1408 and 1603, respectively). The FddUrd derivatives also had a marked inhibitory effect on HIV-2 replication in MT4 cells and HIV-1 induced antigen expression in HUT-78 cells. However, neither FddUrd nor its 5-halogeno derivatives were inhibitory to Moloney sarcoma virus-induced transformation of murine C3H cells. The anti-HIV-1 activity of FddUrd, FddCIUrd, FddBrUrd, and FddIUrd was reversed by the addition of thymidine and 2'-deoxycytidine. The 5-halogeno-FddUrd analogues had a markedly higher affinity for MT4 thymidine kinase than FddUrd (Ki/Km, 4.0-4.7, as compared with 302 for FddUrd).
ISSN: 0026-895X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Laboratory of Virology and Chemotherapy (Rega Institute)
Medicinal Chemistry (Rega Institute)
# (joint) last author

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