Synthesis of 1-(3′-Azido-2′,3′-dideoxy-α-L-<i>threo</i>-pentofuranosyl)thymine as a Potential Anti-HIV Agent
作者:Stanislas Czernecki、Thierry Le Diguarher
DOI:10.1055/s-1991-26543
日期:——
Starting from methyl 2,3,5-tri-O-benzoyl-α-L-arabinofuranoside, a multistep synthesis of the C-4′ epimer of AZT is described. Glycosylation of silylated thymine with 2,3,5-tri-O-benzoyl-L-arabinofuranosyl acetate (5) affords the α-nucleoside 7 after debenzoylation. Deoxygenation at C-2′ of the selectively protected 8, followed by displacement of a 3′-methanesulfonyl group by lithium azide leads to the title compound which did not exhibit antiviral activity against HIV-1.
以甲基2,3,5-三-O-苯甲酰-α-L-阿拉伯呋喃糖苷为起始物,描述了AZT的C-4'异构体的多步合成。用2,3,5-三-O-苯甲酰-L-阿拉伯呋喃糖乙酸酯(5)对硅化胸腺嘧啶进行糖苷化反应,在去苯甲酰化后获得α-核苷7。在选择性保护的化合物8的C-2'处去氧化,然后用锂叠氮化物替换3'-甲磺酰基,得到的目标化合物对HIV-1未表现出抗病毒活性。