A concise synthesis of quinazolinone TGF-β RI inhibitor through one-pot three-component Suzuki–Miyaura/etherification and imidate–amide rearrangement reactions
作者:Hong-yu Li、Yan Wang、William T. McMillen、Arindam Chatterjee、John E. Toth、Sreenivasa R. Mundla、Matthew Voss、Robert D. Boyer、J. Scott Sawyer
DOI:10.1016/j.tet.2007.08.069
日期:2007.11
purification. Reaction of compound 11 with methanesulfonyl chloride at room temperature furnished the 1,3 O–N rearranged product (12), which is postulated to proceed via an intramolecular mechanism. The outlined synthesis provides a highly efficient and high-yielding route that is amenable to rapid analog synthesis.
已经开发了一种简单而有效的合成二氢吡咯并吡唑硼酸中间体(5)的方法。微波加热使用三组分Suzuki-Miyaura /醚化反应可产生高产率且易于纯化的高级化合物11。在室温下,化合物11与甲磺酰氯的反应提供了1,3 O – N重排产物(12),该产物经推测是通过分子内机理进行的。概述的合成提供了适用于快速模拟合成的高效且高产率的途径。