168786-98-9Relevant articles and documents
A new approach for syntheses of 2′,3′-dideoxy-2′,3′ -dehydronucleosides using 2,2-difluoro-1,3-dimethylimidazolidine (DFI) as a dehydrating reagent
Umetani, Hideki,Sonoda, Hiroshi,Komatsu, Hironori
, p. 667 - 669 (2007/10/03)
We found that 2,2-difluoro-1,3-dimethylimidazolidine (DFI) is useful for not only fluorination but also dehydrating reactions. This dehydrating ability of DFI was applied to the syntheses of dihydrofurans (2) that are possible starting materials for various anticancer or antiviral drugs.
Synthesis and Antivirial Evaluation of Quinazoline, Thieno/pyrimidine, and Lumazine Analogues of 3'-Fluoro-3'-deoxythymidine (FLT)
El-Barbary, Ahmed A.,El-Brollosy, Nasser R.,Abdel-Bary, Hamed M.,Pedeson, Erik B.,Stein, Paul,Nielsen, Claus
, p. 1371 - 1376 (2007/10/02)
2,4(1H,3H)-Quinazolinediones 3a-c, lumazine (3d) and thienopyrimidine-2,4(1H,3H)-dione (8) were silylated and condensed with methyl 2,3-dideoxy-3-fluoro-5-O-(4-phenylbenzoyl)-β-D-erythro-pentafuranoside (2) by using trimethylsilyl triflate as a catalyst to afford the corresponding cyclic nucleosides 4 and 9 and acyclic nucleosides 5 and 10.Removal of the protecting group from the glycon moiety was achieved in good yields by treatment with sodium methoxide in methanol at room temperature.The new FLT analogues were devoid of activity against HIV-1 and HSV-1. - Keywords: Nucleosides / HIV / 3'-Fluoronucleosides / FLT analogues