Synthesis of Tetrahydronaphthyridines from Aldehydes and HARP Reagents via Radical Pictet–Spengler Reactions
作者:Moritz K. Jackl、Imants Kreituss、Jeffrey W. Bode
DOI:10.1021/acs.orglett.6b00523
日期:2016.4.15
with newly designed HARP (halogen amine radical protocol) reagents gives access to α-substituted tetrahydronaphthyridines. By using different HARP reagents, various regioisomeric structures can be prepared in a single operation. These products, which are of high value in medicinal chemistry, are formed in a predictable manner via a formal Pictet–Spengler reaction of electron-poor pyridines that would
醛与新设计的HARP(卤素胺自由基方案)试剂的组合可使用α-取代的四氢萘啶。通过使用不同的HARP试剂,可以在一次操作中制备各种区域异构结构。这些产品在药物化学中具有很高的价值,它们是通过可预测的方式通过贫电子吡啶的正式Pictet-Spengler反应形成的,而该不良电子吡啶不会参与相应的极性反应。