Efficient Synthesis of 6-Substituted Purine Derivatives Using Pd-Catalyzed Cross-Coupling Reactions with 2’-Deoxyguanosine O6-Tosylate
作者:Fumi Nagatsugi、Yuki Ogata、Shuhei Imoto、Shigeki Sasaki
DOI:10.3987/com-07-s(u)24
日期:——
6-Substituted purine analogs function in a variety of biological activities including antiviral pathways. A number of studies have reported on the development of the efficient synthesis of these nucleoside analogs. We previously demonstrated that oligonucleotides containing 2-amino-6-vinylpurine derivatives react with the cytosine at the target site with extreme selectivity. This was the first finding
6-取代的嘌呤类似物在包括抗病毒途径在内的多种生物活性中起作用。许多研究报告了这些核苷类似物的有效合成的发展。我们之前证明了含有 2-氨基-6-乙烯基嘌呤衍生物的寡核苷酸与靶位点的胞嘧啶反应具有极高的选择性。这是鸟苷的O 6 -甲苯磺酸酯衍生物作为Pd(0)催化的与乙烯基三丁基锡烷的交叉偶联反应产生2-氨基-6-乙烯基嘌呤的有效底物的第一个发现。为了证明甲苯磺酸盐前体的有用性,在本研究中,我们研究了过渡金属催化剂和配体在使用硼酸或格氏试剂作为偶联伙伴来实现交叉偶联反应中。