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Beilstein J. Org. Chem. 2020, 16, 1740–1753, doi:10.3762/bjoc.16.146
Graphical Abstract
Figure 1: Representative examples of some commercial drugs and biologically active alkaloids.
Scheme 1: Synthesis of β-carboline-linked 2-nitrochalcones.
Scheme 2: Synthesis of β-carboline-linked benzothiophenone frameworks.
Scheme 3: Comparison of outcome of one-pot vs two-pot approach.
Scheme 4: One-pot synthesis of β-carboline C-1-tethered benzothiophenone derivatives.
Scheme 5: One-pot synthesis of β-carboline C-3-linked benzothiophenone derivatives.
Scheme 6: One-pot synthesis of β-carboline-linked benzothiophene derivative 6C.
Scheme 7: Control experiment in the presence of a radical scavenger.
Figure 2: Proposed reaction mechanism.
Figure 3: Fluorescence spectra of 2aA–nA, 2bB, 2hB, and 6C.
Figure 4: Fluorescence spectra of 4aA–gA, and 4eB.