Synthesis of 1,2,3-triazolo-carbanucleoside analogues of ribavirin targeting an HCV in replicon
摘要:
The synthesis of carbocyclic and phosphonocarbocyclic analogues of ribavirin, an anti-HCV inhibitor, are described. Those compounds were evaluated against HCV but also against other important viruses in order to determine their spectrum of antiviral activity. Compounds 6 and 13 displayed a moderate IC50 against HIV-1 of 43.8 and 37 muM, respectively. (C) 2003 Elsevier Ltd. All rights reserved.
Synthesis of 1,2,3-triazolo-carbanucleoside analogues of ribavirin targeting an HCV in replicon
摘要:
The synthesis of carbocyclic and phosphonocarbocyclic analogues of ribavirin, an anti-HCV inhibitor, are described. Those compounds were evaluated against HCV but also against other important viruses in order to determine their spectrum of antiviral activity. Compounds 6 and 13 displayed a moderate IC50 against HIV-1 of 43.8 and 37 muM, respectively. (C) 2003 Elsevier Ltd. All rights reserved.
Efficient Pd(0)-catalyzed synthesis of 1,2,3-triazolo-3′-deoxycarbanucleosides and their analogues
作者:Nicolas Joubert、Raymond F. Schinazi、Luigi A. Agrofoglio
DOI:10.1016/j.tet.2005.09.034
日期:2005.12
The racemic synthesis of hitherto unknown 5-substituted-[1,2,3]-triazolo-3'-deoxycarbanucleosides and [1,2,3]-triazolo-[4,5-c] pyridin-4-one analogues is described. The key iodinated intermediate 10 was prepared in 10 steps using a malonic synthesis. Various alkynes were introduced at the C-5 position of 10 under optimized Pd(0)-catalyzed Sonogashira cross-coupling alkyrylation to yield after deprotection 12a-i. The synthesis of their 8-aza-3-deazapurine analogues (13a-h) was also accomplished through the heteroannulation of internal alkynes under aqueous dimethylamine. (c) 2005 Elsevier Ltd. All rights reserved.