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Solid-phase synthesis of 5′-O-β,γ-methylenetriphosphate derivatives of nucleosides and evaluation of their inhibitory activity against HIV-1 reverse transcriptase

✍ Scribed by Yousef Ahmadibeni; Chandravanu Dash; Stuart F.J. Le Grice; Keykavous Parang

Publisher: Elsevier Science
Year: 2010
Tongue: French
Weight: 446 KB
Volume: 51
Category: Article
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2010.04.005

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✦ Synopsis

Bis(dichlorophosphino)methane was converted to a β,γ-methylenetriphosphitylating reagent. The reagent was immobilized on aminomethyl polystyrene resin-bound linker of 4-acetoxy-3-phenylbenzyl alcohol to afford a polymer-bound β,γ-methylenetriphosphitylating reagent, which was reacted with unprotected nucleosides followed by oxidation with tert-butyl hydroperoxide, deprotection of cyanoethoxy groups with DBU, and acidic cleavage, to produce 5'-O-β,γ-methylene triphosphate nucleosides in 53-82% overall yields. Among all the compounds, cytidine 5'-O-β,γ-methylenetriphosphate inhibited completely RNase H activity of HIV-1 reverse transcriptase at 700 μM.

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