2862-16-0Relevant academic research and scientific papers
C6–O-alkylated 7-deazainosine nucleoside analogues: Discovery of potent and selective anti-sleeping sickness agents
Hulpia, Fabian,Bouton, Jakob,Campagnaro, Gustavo D.,Alfayez, Ibrahim A.,Mabille, Dorien,Maes, Louis,de Koning, Harry P.,Caljon, Guy,Van Calenbergh, Serge
, (2020/01/13)
African trypanosomiasis, a deadly infectious disease caused by the protozoan Trypanosoma brucei spp., is spread to new hosts by bites of infected tsetse flies. Currently approved therapies all have their specific drawbacks, prompting a search for novel th
7-Deazainosine derivatives: Synthesis and characterization of 7- and 7,8-substituted pyrrolo [2,3-d]pyrimidine ribonucleosides
Ciliberti, Nunzia,Durini, Elisa,Manfredini, Stefano,Vertuani, Silvia
, p. 525 - 533 (2008/12/20)
The synthesis of model 7 deazapurine derivatives related to tubercidin and toyocamycin has been performed. Tubercidin derivatives were obtained by simple conversion of the amino group of the heterocyclic moiety of the starting 7-deazadenosine compounds, into a hydroxyl group. Preparation of toyocamycin derivatives was accomplished by treatment of the silylated 6-bromo-5- cyanopyrrolo[2,3-d]pyrimidin-4-one with 1-O-acetyl-2,3,5-tri-O-benzoyl-β-d- ribofuranose. The glycosylation reaction afforded a mixture of 8-bromo 7-cyano 2′,3′,5′ tri-O-benzoyl 7-deazainosine and 6-bromo-5-cyano-3- (2′,3′,5′-tri-O-benzoyl-β-d-ribofuranosyl)pyrrolo[2,3-d] -pyrimidin-4-one isomers: The structures were assigned on the basis of NMR spectroscopy studies. Next deprotection treatment gave the novel 7-deazainosine ribonucleosides. Copyright Taylor & Francis Group, LLC.
7-Functionalized 7-deazapurine β-d and β-l-ribonucleosides related to tubercidin and 7-deazainosine: glycosylation of pyrrolo[2,3-d]pyrimidines with 1-O-acetyl-2,3,5-tri-O-benzoyl-β-d or β-l-ribofuranose
Seela, Frank,Ming, Xin
, p. 9850 - 9861 (2008/02/11)
Several 7-functionalized 7-deazapurine ribonucleosides were prepared. Glycosylation of 7-halogenated 6-chloro-7-deazapurines with 1-O-acetyl-2,3,5-tri-O-benzoyl-β-d-ribofuranose or 1-O-acetyl-2,3,5-tri-O-benzoyl-β-l-ribofuranose gave the protected β-d-nuc
Structural determinants for N1/N7 cyclization of nicotinamide hypoxanthine 5′-dinucleotide (NHD+) derivatives by ADP-ribosyl cyclase from Aplysia californica: Ca2+-mobilizing activity of 8-substituted cyclic inosine 5′-diphosphoribose analogues in T-lymphocytes
Moreau, Christelle,Wagner, Gerd K.,Weber, Karin,Guse, Andreas H.,Potter, Barry V. L.
, p. 5162 - 5176 (2008/04/18)
A series of nicotinamide hypoxanthine 5′-dinucleotide (NHD +) analogues modified at C-8 (2-5) and 7-deaza-NHD+ were synthesized, and cyclization in the presence of Aplysia ADP-ribosyl cyclase was studied. All 8-substituted NHD+ analogues were converted into their N1-cyclic forms by the enzyme, while in contrast, 7-deaza-NHD+ 17 was hydrolyzed into 7-deazainosine 5′-diphosphoribose (7-deaza-IDPR) 25. Correlations are made showing that the conformation of the NHD+ substrate is the key to successful cyclization. The pharmacological activities of these novel cIDPR derivatives were evaluated in both permeabilized and intact Jurkat T-lymphocytes. The results show that in permeabilized cells both 8-iodo 1g and 8-N3-N1-cIDPR 1d have an activity comparable to that of cADPR, while 8-iodo 1g and 8-phenyl-N1-cIDPR 1c have a small but significant effect in intact cells and can therefore be regarded as membrane-permeant; thus, cIDPR derivatives are emerging as important novel biological tools to study cADPR-mediated Ca2+ release in T-cells.
