Synthesis of a hairpin pyrrole–imidazole polyamide conjugate containing a quinone methide precursor and vinyl linking group
作者:Dalip Kumar、Steven E. Rokita
DOI:10.1016/j.tetlet.2004.02.070
日期:2004.3
elaborating a quinone methide precursor for conjugation to a DNA ligand was not compatible with the presence of a vinyl group. Instead, an acrylate linker was attached by Heck coupling subsequent to o-substitution of the phenolic precursor. This transformation required protection of the phenolic group and use of ethyl acrylate rather than acrylic acid. The presence of the vinyl group also rendered
精心设计醌甲基化物前体以与DNA配体缀合的标准程序与乙烯基的存在不相容。取而代之的是,在酚前体的O-取代之后,通过Heck偶联连接丙烯酸酯连接基。该转化需要保护酚基并使用丙烯酸乙酯而不是丙烯酸。乙烯基的存在也使醌甲基化物前体在碱性条件下比其等效的饱和衍生物更不稳定,并且需要温和的条件才能与吡咯-咪唑聚酰胺偶联。