3′-Deoxy-3′-C-trifluoromethyl Nucleosides: Synthesis and Antiviral Evaluation
摘要:
2',3'-Dideoxy-3'-C-trifluoromethylthymidine 9a and -uridine 9b and 3'-C-trifluoromethyl-d(4)T 11 were prepared in a few steps from 3'-deoxy-3'-C-trifluoromethyl-D-ribose, which synthesis was recently reported. The biological assessment of these nucleoside analogues did not reveal interesting antiviral properties against HIV-1, HSV-1, CMV, Vaccine, and Cox B4.
Synthesis of 3-Deoxy-3-C-Trifluoromethyl-d-Ribose Fromd-Xylose ord-Glucose
摘要:
The synthesis of 3-deoxy-1,2-O-isopropylidene-3-C-trifluoromethyl-alpha-D-ribofuranose is described. After a first approach from a commercial D-xylose derivative which was limited by an incomplete stereoselectivity, the synthesis of the title compound was performed from 1,2:5,6-di-O-isopropylidene-alpha-D-glucofuranose by a reaction sequence where key steps: trifluoromethylation with CF(3)SiMe(3) and radical deoxygenation are highly stereoselective.