Synthesis of 8-Substituted Pyrazolo[1,5-<i>a</i>]-1,3,5-triazine Derivatives by Palladium-Catalyzed Cross-Coupling Reactions
作者:Benoît Joseph、Florence Popowycz、Philippe Bernard、Pierre Raboisson
DOI:10.1055/s-2006-958963
日期:2007.2
8-Substituted pyrazolo[1,5-a]-1,3,5-triazine derivatives 6 were prepared from the corresponding 8-iodopyrazolo[1,5-a]-1,3,5-triazines 5 through palladium-catalyzed cross-coupling reactions. Several bioisosteres of hypoxanthine drugs 2 were then prepared by final nucleophilic aromatic substitution.
8-取代的吡唑并[1,5-a]-1,3,5-三嗪衍生物6由相应的8-碘吡唑并[1,5-a]-1,3,5-三嗪5通过钯催化交叉制备-偶联反应。然后通过最终的亲核芳香取代制备了几种次黄嘌呤药物 2 的生物等排体。