A Facile Synthesis and Anti-Avian Influenza Virus (H5N1) Screening of Some Novel Pyrazolopyrimidine Nucleoside Derivatives
作者:Aymn E. Rashad、Ahmed H. Shamroukh、Randa E. Abdel-Megeid、Ahmed Mostafa、Mohamed A. Ali、Klaus Banert
DOI:10.1080/15257770.2010.529480
日期:2010.11.30
latter compound (generated in situ) was treated with some alkyl halides to afford the corresponding N-substituted compounds 3–7. The siloxy derivative 8 (generated also in situ from 2) was ribosylated and glycosylated to yield compounds 9 and 11, respectively. Deprotection of compounds 9 and 11 in methanolic ammonia produced the free nucleosides 10 and 12, respectively. Moreover, the prepared compounds
5-amino-1-(9-methyl-5,6-dihydronaphtho[1',2':4,5]thieno[2,3-d]pyrimidin-11-yl)-1H-pyrazole-4-的处理腈 (1) 与甲酸得到 pyrazolo[3,4-d]pyrimidin-4-one 衍生物 2. 后一种化合物的钠盐(原位生成)用一些卤代烷处理,得到相应的 N-取代化合物3-7。将甲硅烷氧基衍生物 8(也由 2 原位生成)进行核糖基化和糖基化,分别得到化合物 9 和 11。化合物 9 和 11 在甲醇氨中的脱保护分别产生游离核苷 10 和 12。此外,还测试了制备的化合物对 H5N1 病毒的抗病毒活性 [A/chicken/Egypt/1/2006],与其他测试化合物相比,其中一些显示出中等的结果。