Synthesis of Nucleosides and Related Compounds. XXII. Carbocyclic Analogues of Thymidine and Related Compounds from 2-Azabicyclo(2.2.1)hept-5-en-3-ones.
Synthesis and Anti-HCV Activities of 4′-Fluoro-2′-Substituted Uridine Triphosphates and Nucleotide Prodrugs: Discovery of 4′-Fluoro-2′-<i>C</i>-methyluridine 5′-Phosphoramidate Prodrug (<b>AL-335</b>) for the Treatment of Hepatitis C Infection
We report the synthesis and biological evaluation of a series of 4'-fluoro-2'- C-substituted uridines. Triphosphates of the uridine analogues exhibited a potent inhibition of hepatitis C virus (HCV) NS5B polymerase with IC50 values as low as 27 nM. In an HCV subgenomic replicon assay, the phosphoramidate prodrugs of these uridine analogues demonstrated a very potent activity with EC50 values as low
Carbocyclic nucleoside analogues remain interesting target molecules having the potential to combine biological activity with greater metabolic stability than their sugar counterparts. This paper describes a rapid and versatile synthetic approach to such compounds based on commercial cyclopentenones (e.g., 1) that has been developed in our laboratory. Carbocyclic nucleosides like 2′-methyl-aristeromycin
The present invention comprises novel and known purine and pyrimidine nucleoside derivatives which have been discovered to be active against hepatitis C virus (HCV). The use of these derivatives for the treatment of HCV infection is claimed as are the novel nucleoside derivatives disclosed herein.
Synthesis, antiviral, cytotoxic and cytostatic evaluation of N 1-(phosphonoalkyl)uracil derivatives
作者:Dorota Rygielska-Tokarska、Graciela Andrei、Dominique Schols、Robert Snoeck、Iwona E. Głowacka
DOI:10.1007/s00706-016-1701-2
日期:2016.6
closure. Under standard conditions (NCS; NBS; I2/CAN) all N 1-(phosphonoalkyl)uracils were transformed into the respective 5-halogeno derivatives to be later benzoylated at N3. All compounds were evaluated in vitro for activity against a broad variety of DNA and RNA viruses. One compound was slightly active against human cytomegalovirus in HEL cell cultures (EC50 = 45 μM) while another showed weak activity
Uracil- and thymine-substituted thymidine and uridine derivatives
作者:Anna M. Costa、Montserrat Faja、Jaume Farràs、Jaume Vilarrasa
DOI:10.1016/s0040-4039(98)00100-2
日期:1998.3
The four possible 3′-uracil-1-yl and 3′-thymin-1-yl derivatives of 3′-deoxythymidine and the four analogous derivatives of 2′-deoxyuridine have been synthesised from thymidine and uridine, respectively. Advantages of the 2-(methoxycarbonyl)vinyl group to prevent the formation of anhydronucleosides and of SnCl2/PhSH/Et3N in relation to H2/Pd for the reduction of most azido groups are disclosed.