Solid-phase synthesis of 5′-O-β,γ-methylenetriphosphate derivatives of nucleosides and evaluation of their inhibitory activity against HIV-1 reverse transcriptase
作者:Yousef Ahmadibeni、Chandravanu Dash、Stuart F.J. Le Grice、Keykavous Parang
DOI:10.1016/j.tetlet.2010.04.005
日期:2010.6
Bis(dichlorophosphino)methane was converted to a beta,gamma-methylenetriphosphitylating reagent. The reagent was immobilized on aminomethyl polystyrene resin-bound linker of 4-acetoxy-3-phenylbenzyl alcohol to afford a polymer-bound beta,gamma-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-beta,gamma-methylene triphosphate nucleosides in 53- 82% overall yields. Among all the compounds, cytidine 5'-O-beta,gamma-methylenetriphosphate inhibited completely RNase H activity of HIV-1 reverse transcriptase at 700 mu M. (C) 2010 Elsevier Ltd. All rights reserved.