General methods for the synthesis and late-stage diversification of 2,4-substituted 7-azaindoles
作者:Jeffrey G. Varnes、Thomas McGuire、Rebecca E. Meadows、Bernard Barlaam、Jemma Clark、Calum R. Cook、Gemma Davison、Allan Dishington、Chris De Savi、Craig Donald、Tyler Grebe、Sudhir Hande、Janet Hawkins、Alexander W. Hird、Jane Holmes、Andrew Lister、Simon Lucas、Jane Moore、Esther Moore、Anil Patel、Kurt G. Pike、Bryan Roberts、Andrew Stark、Darren Stead、Kumar Thakur、Paul Turner、Melissa Vasbinder、Bin Yang
DOI:10.1016/j.tetlet.2016.09.029
日期:2016.10
As part of a medicinal chemistry program, we adapted known synthetic methods for the late-stage diversification of 2,4-substituted 7-azaindoles. The strengths and weaknesses of these strategies are discussed. In the course of this work, three optimized conditions were identified from an iterative catalyst screen for the conversion of Boc-protected 4-chloro-2-(piperidin-4-yl)-7-azaindole to the corresponding
作为药物化学计划的一部分,我们采用了已知的合成方法对2,4-取代的7-氮杂吲哚进行后期多样化。讨论了这些策略的优缺点。在这项工作的过程中,从迭代催化剂筛选中确定了三个优化条件,以将Boc保护的4-氯-2-(哌啶丁-4-基)-7-氮杂吲哚转化为相应的频哪醇硼酸酯。另外,还公开了可扩展的路线以先前未报告的Boc保护的4-溴-2-(哌啶丁-4-基)-7-氮杂吲哚和以72%的分离产率有效转化为相应的频哪醇硼酸酯。