鸟苷置于palladium On Activated Charcoal 盐酸,4-二甲氨基吡啶,四乙基氯化铵,氢气,Sodium Acetate,Potassium Carbonate,对甲苯磺酸,溶剂黄146,N,N-二甲基苯胺,Sodium Bromide,三氯氧磷体系中,用 N-甲基吡咯烷酮,甲醇,水,N,N-二甲基甲酰胺,乙腈 作为反应溶剂,40.0~105.0 °C,101.33 Kpa 条件下,反应 59.0H,反应生成 9-(4-乙酰氧基-3-乙酰氧甲基丁基)-2-氨基-6-氯嘌呤
参考文献:Practical Syntheses Of Penciclovir And Famciclovir From N2-Acetyl-7-Benzylguanine
标题:Practical Syntheses Of Penciclovir And Famciclovir From N2-Acetyl-7-Benzylguanine
摘要:We Have Established Practical Methods For The Synthesis Of Penciclovir (Pcv) And Famciclovir (Fcv) From Readily Available Guanosine Via N2-Acetyl-7-Benzylguanine. The Alkylation Of N2-Acetyl-7-Benzylguanine Proceeded Selectively At The N9 Position To Give The Desired Alkylated Product In Good Yield In Salt Form. After Conventional Catalytic Hydrogenolysis Of The Benzyl Group And Hydrolysis Of The Resulting Acetate,Pure Pcv Was Obtained Without The Need For Chromatography. As A Side Chain Precursor,The Mesylate Was Selected Rather Than A Halide Since The Corresponding Halides Gave Several Impurities Under The Same Reaction Conditions. Two Procedures For The Synthesis Of Fcv From Pcv And A Derivative Are Also Reported. (C) 2006 Elsevier Ltd. All Rights Reserved.
DOI:10.1016/j.Tet.2006.03.080