2009
DOI: 10.1080/15257770903044465
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Base-Functionalized Carbocyclic Nucleosides: Design, Synthesis, and Mechanism of Antiviral Activity

Abstract: New carbocyclic ribonucleosides with unsaturated groups at the C-2 position of the nucleobase were designed as potential RNA antiviral compounds. The design was based on the expectation that the monophosphates of these compounds would be inhibitors of the enzyme, IMPDH. Appropriate methodologies were developed to achieve the target molecules. Results from the initial in vitro antiviral studies are mentioned. The IMPDH-associated mechanism of the antiviral activity of the most active compound is supported by en… Show more

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Cited by 6 publications
(6 citation statements)
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“…O 6 -Alkylated dGTP derivatives were synthesized starting from commercially available 2'-deoxyguanosine,w hich was acetylated and subsequently chlorinated at the 6-position by known procedures (see Figure S2 in the Supporting Information). [20] Thedifferent alkoxy groups were introduced in position 6by the reaction of 22 with the respective sodium alkoxide solutions.T he obtained nucleosides 23 a-c were converted into the corresponding 2'-deoxynucleoside-5'-triphosphates ( Figure S2). [21,22] ThepotencyofO 6 -methyl-, O 6 -ethyl-, O 6 -propyl-, and O 6isopropyl-dGTP towards diverging incorporation efficiencies opposite Ca nd 5mC was further investigated.…”
mentioning
confidence: 99%
“…O 6 -Alkylated dGTP derivatives were synthesized starting from commercially available 2'-deoxyguanosine,w hich was acetylated and subsequently chlorinated at the 6-position by known procedures (see Figure S2 in the Supporting Information). [20] Thedifferent alkoxy groups were introduced in position 6by the reaction of 22 with the respective sodium alkoxide solutions.T he obtained nucleosides 23 a-c were converted into the corresponding 2'-deoxynucleoside-5'-triphosphates ( Figure S2). [21,22] ThepotencyofO 6 -methyl-, O 6 -ethyl-, O 6 -propyl-, and O 6isopropyl-dGTP towards diverging incorporation efficiencies opposite Ca nd 5mC was further investigated.…”
mentioning
confidence: 99%
“…This chiral building block was used because of its versatility in the synthesis of other carbocyclic nucleosides [20]. Synthesis of the key intermediate, (5) from 4 involved the following transformations: hydroxylation of 4 through treatment with osmium tetroxide in the presence of N-methylmorpholine-N-oxide (NMO), which resulted in hydroxylation from the α-face, as previously reported [16,[21][22][23]; protection of the diol and the lactam NH groups; reductive cleavage of the lactam and protection of the resulting alcohol; and selective aqueous hydrolysis of the NH protecting group [16]. It is relevant to note that the use of tert-butyldimethylsilyl ether (TBDMS) for protection of the 5'-hydroxyl group proved less successful, as the eventual deprotection step became problematic because of the poor water solubility of the TBDMS-protected compound.…”
Section: Resultsmentioning
confidence: 99%
“…in acetonitrile (5 mL) was added a solution of amine 5 [16,23] (0.6 g, 1.81 mmol) in acetonitrile (10 mL) and the mixture was refluxed at 90 °C for 15 min. The reaction mixture was concentrated to dryness, and the residue was purified by silica gel column chromatography using chloroform/methanol (98:2) as eluent to give the imidazole intermediate (0.423 g, 63.3%).…”
Section: (1s2r3r5r)-3-(acetoxymethyl)-5-(5-amino-4-carbamoyl-1h-immentioning
confidence: 99%
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“…Die O 6 -alkylierten dGTP-Derivate wurden ausgehend von kommerziell erhältlichem 2'-Desoxyguanosin synthetisiert, das nach bekannten Vorschriften acetyliert und darauffolgend in 6-Position chloriert wurde (Abbildung S2). [20] Die verschiedenen Alkoxygruppen wurden durch die Reaktion von 22 mit den jeweiligen Natriumalkoholaten in Position 6e ingeführt. Die somit erhaltenen Nukleoside 23 a-c wurden in die entsprechenden dNTPs über-führt (Abbildung S2).…”
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