Synthesis of 2',3'-dideoxy-3'-C-hydroxymethyl nucleosides as potential inhibitors of HIV
摘要:
A novel synthesis of 2',3'-dideoxy-3'-C-hydroxymethyl nucleosides is described. (2S,3R)-3-[[(4-Bromobenzyl)oxy]methyl]oxirane-2-methanol (1) was regioselectively alkylated using allylmagnesium bromide. The allyl double bond was oxidatively cleaved, and the product was treated with acidic methanol to give the requisite methyl furanoside derivative 5, which was subsequently condensed with purine and pyrimidine bases. Deblocking and separation of the anomers by chromatography afforded the alpha- and beta-nucleoside analogues.
The synthesis of novel 3′,5′-homocyclic nucleotides as potential anti-HIV agents
作者:Michael G. B. Drew、Stephen Gorsuch、Jayne H. M. Gould、John Mann
DOI:10.1039/a900800d
日期:——
(5S)-(5-tert-Butyldimethylsiloxymethyl)furan-2(5H)-one has been converted into cytosine 2â²,3â²-dideoxy-3â²,5â²-homocyclic monophosphate (and its 5-fluoro congener) together with an adenosine homocyclic monophosphate. These were designed as inhibitors of HIV reverse transcriptase although they did not possess such activity.
A series if 2',3'-dideoxy-3'-C-hydroxymethyl purine nucleosides were prepared based on the photochemical ring expansion of a chiral cyclobutanone precursor, (2S)-trans-2,3-bis[(benzoyloxy)methyl]cyclobutanone, in the presence of a 6-substituted purine. Both alpha- and beta-anomers are produced in this transformation. Deprotection was effected by reaction of the photoadducts with saturated methanolic