3056-18-6Relevant academic research and scientific papers
Anti-HCV nucleoside derivatives
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, (2008/06/13)
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.
Nucleic acid related compounds. 118. Nonaqueous diazotization of aminopurine derivatives. Convenient access to 6-halo- and 2,6-dihalopurine nucleosides and 2′-deoxynucleosides with acyl or silyl halides
Francom, Paula,Robins, Morris J.
, p. 666 - 669 (2007/10/03)
Treatment of 9-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-2-amino-6-chloropurine (1) with TMS-Cl and benzyltriethylammonium nitrite (BTEA-NO2) in dichloromethane gave the crystalline 2,6-dichloropurine nucleoside 2, and acetyl chloride/BTEA-NO2 was equally effective (~85%, without chromatography). TMS-Br/tert-butyl nitrite/dibromomethane gave crystalline 2-bromo-6-chloro analogue 3 (85%). (Chloro or bromo)-dediazoniation of 3′,5′-di-O-acetyl-2′-deoxyadenosine (4) gave the 6-[chloro (5, 63%) or bromo (6, 80%)]purine deoxynucleosides, and 2′,3′,5′-tri-O-acetyladenosine (8) was converted into the 6-chloropurine nucleoside 9 (71%).
