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Updated: Apr 21, 2026

Functionalized Spirocyclic Heterocycle Synthesis and Cytotoxicity Assay
Published on: February 9, 2021
Synthesis and evaluation of some novel chromone based dithiazoles as antimicrobial agents
Naureen Aggarwal1, Vishal Sharma1, Harpreet Kaur2
1Bio-Organic and Photochemistry Laboratory, Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, Punjab 143 005, India.
Abstract:
Novel substituted 1,2,4-dithiazolylchromones 3a-j were synthesized by the reaction of 3-formylchromones (1a-j) with two equivalents of p-chlorothiobenzamide (2) in dry xylene and characterized spectroscopically (IR, (1)H and (13)C NMR, mass) and elemental analysis. All synthesized compounds were screened for in vitro antimicrobial activity against various pathogenic bacterial and fungal strains and were found to possess good to moderate inhibitory potential against all tested strains. Antimicrobial results reveal that compounds bearing lipophilic electron withdrawing groups such as chloro and bromo displayed significant inhibitory potential against both bacterial and fungal strains. Particularly, compound 3c displayed significant inhibitory against bacterial strains and compound 3h exhibits significant inhibitory potential in comparison to standard drug fluconazole against fungal strain S. cerevisiae.
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