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Quiroga, J., et al. (2008) Regioselective Formylation of Pyrazolo[3,4-b]pyridine and Pyrazolo[1,5-a]pyrimidine Systems Using Vilsmeier-Haack Conditions. Tetrahedron Letters, 49, 2689-2691.
https://doi.org/10.1016/j.tetlet.2008.02.166

has been cited by the following article:

• TITLE: Design, Synthesis, Chemistry and Biological Evaluation of Some Polyfunctional Heterocyclic Nitrogen Systems—Overview

  AUTHORS: Asmaa L. Alanzy, Dina A. Bakhotm, Reda M. Abdel-Rahman

  KEYWORDS: Pyrazolo[3, 4-b]pyridine, Simple Heterocyclic Nitrogen, Biological Properties, Edaravone Drug, Synthetic Strategies

  JOURNAL NAME: International Journal of Organic Chemistry, Vol.10 No.2, April 30, 2020

  ABSTRACT: The synthesis, preparation, chemical reactivities and biological activity of simple heterocyclic and heteropolycyclic nitrogen systems as small units as functional pyrazoles, pyridine and pyrimidine, and the related fused systems are reviewed. Among the various possible routes to the formation, isomeric structures have been cited because of patented reaching advanced phases of clinical trials, from 2000 to 2020.