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Beilstein J. Org. Chem. 2019, 15, 874–880, doi:10.3762/bjoc.15.85
Graphical Abstract
Figure 1: Selected examples of bioactive molecules based on the pyrazolopyridine framework.
Scheme 1: Synthesis of pyrazolopyridines containing chromone 4a–m through a multicomponent reaction.
Figure 2: ORTEP Structure of compound 4a and intermolecular hydrogen bonding; the ellipsoid probability level...
Figure 3: Structures of synthesized pyrazolopyridines 4a–m. Reaction conditions: 3-formylchromone derivatives...
Scheme 2: The proposed mechanism for the synthesis of pyrazolopyridines derivatives 4a–m and 5a–d.
Figure 4: Structures of synthesized compounds 5a–d.