Journal of Medicinal Chemistry p. 2470 - 2474 (1993)
Update date:2022-08-03
Topics:
Kumar
Wiebe
Knaus
A new class of 5-(1-azido-2-haloethyl)-2'-deoxyuridines 3a-c was synthesized by the regiospecific addition of XN3 (X = I, Br, Cl) to the vinyl substituent of 5-vinyl-2'-deoxyuridine. Treatment of the 5-(1-azido-2- iodoethyl) compound (3a) with H2 and 10% Pd/C yielded the 5-(1-azidoethyl) (4) and 5-(1-aminoethyl) (5) derivatives of 2'-deoxyuridine. A similar hydrogenation of 5-(1-methoxy-2-iodoethyl)-2'-deoxyuridine (1f) afforded the 5-(1-methoxyethyl) analog 6. The 5-(1-azido-2-haloethyl)-2'-deoxyuridines 3a- c exhibited in vitro antiviral activity against HSV-1, HSV-2, VZV, and EBV, but they were inactive against HCMV. In this group of compounds, the activity order was Cl ≥ I > Br against HSV-1 and Br ≥ Cl > I against HSV-2. A halogen atom in the 5-(1-azido-2-haloethyl) moiety 3a-c is an essential requirement since the 5-(1-azidoethyl) analog 4 was inactive, except for weak antiviral activity against VZV. Although the 5-(1-aminoethyl)-2'- deoxyuridine·HI (5) was inactive against HSV-1 and HSV-2, the 5-(1- methoxyethyl) compound 6 was equiactive to 5-ethyl-2'-deoxyuridine (EDU) against both HSV-1 and HSV-2 and 7-fold and 12-fold less active against HCMV relative to EDU and ganciclovir, respectively. All compounds investigated (3- 6) exhibited low host cell cytotoxicity (IC50 > 118 μM) and inhibited cell proliferation only at high concentrations (IC50 > 76 μM).
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(2019)Doi:10.1021/om960420q
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(1996)Doi:10.1016/0040-4020(96)00854-X
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