A New Synthesis of 4,5,6,7-Tetrahydropyrazolo[1,5-c]pyrimidines by a Retro-Mannich Cascade Rearrangement

作者:Colombo Raffaele; Jeon Kyu Ok; Huryn Donna M; LaPorte Matthew G; Wipf Peter*
来源:Australian Journal of Chemistry, 2014, 67(3): 420-425.
DOI:10.1071/CH13468

摘要

We discovered a new retro-Mannich reaction of in situ prepared pyrazolopyridines to give pyrazolopyrimidines that have hitherto been underrepresented in the heterocyclic chemistry literature. The isolation of a linear hydrolysis product supports a mechanistic hypothesis for this rearrangement process. In order to establish a broader access and explore potential biological applications for these medicinal chemistry building blocks, we investigated the scope of the reaction and generated small amine- as well as amide-based libraries through reductive aminations and amide couplings, respectively.

  • 出版日期2014

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