Issue 48, 2022

Synthesis and biological evaluation of 5-chalcogenyl-benzo[h]quinolines via photocyclization of arylethynylpyridine derivatives

Abstract

A new and efficient method for the synthesis of 6-organyl-5-(arylselanyl)benzo[h]quinolines via visible light-promoted intramolecular ortho-cyclization of 2-aryl-3-(organylethynyl)pyridines has been achieved. The reaction was promoted by radical organochalcogen species generated in situ using diorganyl dichalcogenides, indium chloride as a green Lewis acid and acetonitrile under an argon atmosphere. The protocol showed high regioselectivity and allowed the synthesis of eleven benzo[h]quinoline derivatives in low to good yields. Also, compound 5a demonstrated in vitro antioxidant activity as well as in silico appropriate pharmacodynamic and pharmacokinetic profiles, suggesting that this compound may have promising therapeutic potential.

Graphical abstract: Synthesis and biological evaluation of 5-chalcogenyl-benzo[h]quinolines via photocyclization of arylethynylpyridine derivatives

Supplementary files

Article information

Article type
Paper
Submitted
02 Sept. 2022
Accepted
07 Nov. 2022
First published
08 Nov. 2022

New J. Chem., 2022,46, 23030-23038

Synthesis and biological evaluation of 5-chalcogenyl-benzo[h]quinolines via photocyclization of arylethynylpyridine derivatives

T. J. Peglow, C. C. Martins, K. P. da Motta, C. Luchese, E. A. Wilhelm, R. Stieler and P. H. Schneider, New J. Chem., 2022, 46, 23030 DOI: 10.1039/D2NJ04370J

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