<i>N</i>-Vinyl-Nitroimidazole Cycloadditions: Potential Routes to Nucleoside Analogues
作者:Christopher Ramsden、Russell Clayton
DOI:10.1055/s-2005-872083
日期:——
Cycloaddition reactions of 4-nitro- and 5-nitro-1-vinylimidazoles have been investigated. The cycloadducts obtained are potential intermediates for synthesis of purine nucleoside analogues via reduction to the corresponding aminoimidazoles. A byproduct obtained using benzonitrile oxide as 1,3-dipolarophile has been identified as a novel tricyclic isomer 12 of the cycloadduct 11.
研究了 4-硝基和 5-硝基-1-乙烯基咪唑的环加成反应。通过还原成相应的氨基咪唑,得到的环加成物可能成为合成嘌呤核苷类似物的中间体。使用氧化苯腈作为 1,3- 二极亲和剂得到的副产物已被确认为环加载物 11 的新型三环异构体 12。