2'-Fluorinated arabinonucleosides of 5-(2-haloalkyl)uracil: synthesis and antiviral activity
作者:Herfried Griengl、Erich Wanek、Wolfgang Schwarz、Wolfgang Streicher、Brigitte Rosenwirth、Erik De Clercq
DOI:10.1021/jm00390a013
日期:1987.7
The synthesis of 5-(2-fluoroethyl)-2'-deoxyuridine (FEDU, 4b), its 2'-fluoro analogue 1-(2-deoxy-2-fluoro-beta-D-arabinofuranosyl)-5-(2-fluoroethyl)-1H,3H- pyrimidine-2,4-dione (FEFAU, 4k), and the 2'-fluoro analogue of the potent antiherpes virus compound 5-(2-chloroethyl)-2'-deoxyuridine (CEDU), 5-(2-chloroethyl)-1-(2-deoxy-2-fluoro-beta-D-arabinofuranosyl)-1H,3H-pyr imidine - 2,4-dione (CEFAU, 4i)
Pyrimidine 4′-thionucleosides of the formula (I)
where B¹ is a pyrimidine base;
and either (a) R² is hydrogen and R³ is hydroxy or fluoro,
or (b) R² is hydroxy and R³ is hydrogen, hydroxy or fluoro,
or (c) R² is fluoro and R³ is hydrogen or hydroxy,
or (d) R² and R³ together form a carbon-carbon bond; and physiologically functional derivatives thereof and processes for their production. Preferably, the base B¹ is of the formula (II)
wherein Y is hydroxy or amino, monoalkylamino or dialkylamino; and X is halogen, alkoxy, alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, amino, monoalkylamino, dialkylamino, cyano or nitro. The compounds are useful in the treatment of viral infections.
The invention relates to the preparation of homochiral thiolactones which have application in the synthesis of 3′- and 4′- thionucleosides. Substituents on the thiolactone can be used to influence the configuration of the C-1′ position in the final nucleoside. Configuration at the C-4′ position is controlled by use of the appropriate homochiral glycidol as starting material in the synthesis of the thiolactone. This process also offers the possibility of introducing substituents diastereoselectively in the C-2′ and C-3′ positions.
Synthesis and Anti-Herpes Virus Activity of 2‘-Deoxy-4‘-thiopyrimidine Nucleosides
作者:S. George Rahim、Naimisha Trivedi、Mirjana V. Bogunovic-Batchelor、George W. Hardy、Gail Mills、John W. T. Selway、Wendy Snowden、Edward Littler、Paul L. Coe、Ivan Basnak、Robert F. Whale、Richard T. Walker
DOI:10.1021/jm950029r
日期:1996.1.1
A series of 5-substituted 2'-deoxy-4'-thiopyrimidine nucleosides was synthesized and evaluated as potential antiviral agents. A number of analogues such as 2'-deoxy-5-propyl-4'-thiouridine (3ii), 2'-deoxy-5-isopropyl-4'-thiouridine (3iii), 5-cyclopropyl-2'-deoxy-4'-thiouridine (3iv), 2'-deoxy-4'-thio-5-vinyluridine (3viii), and 5-(2-chloroethyl)-2'-deoxy-4'-thiouridin (3xx) were found to be highly active against herpes simplex virus type-1 (HSV-1) and varicella tester virus (VZV) in vitro with no significant cytotoxicity. The compound with the broadest spectrum of activity was 2'-deoxy-5-ethyl-4'-thiouridine (3i) which showed significant activity against HSV-1, HSV-2, and VZV.