Bispyridinium antibacterial compounds, methods of synthesis and use thereof

By designing bispyridinium antibacterial compounds and utilizing nucleophilic substitution reactions to achieve dual targeting of bacterial cell membranes and DNA, the problem of large molecular weight and high toxicity in existing antibacterial research has been solved, providing a highly efficient and low-toxicity antibacterial solution, especially with significant inhibitory effects against multidrug-resistant bacteria.

CN122233979APending Publication Date: 2026-06-19HUNAN UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN UNIV
Filing Date
2026-02-09
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

In existing technologies, pyridine salt-based polymers have problems such as large molecular weight, low bioavailability, high toxicity, and difficulty in synthesis and purification in antibacterial research. Furthermore, the targeted intervention mechanism against bacterial cell membranes and DNA has not been fully explored, making it difficult to solve the problem of antibiotic resistance.

Method used

A bispyridinium antibacterial compound was designed and synthesized. By modularly combining hydrophobic and positively charged groups through nucleophilic substitution reactions, dual targeting of bacterial cell membranes and DNA was achieved. Small molecule compounds were used to improve bioavailability and reduce toxicity.

Benefits of technology

It has achieved significant antibacterial activity against both Gram-positive and Gram-negative bacteria, exhibits low toxicity and high biocompatibility, and shows potential in the treatment of bacterial-mediated diseases, especially demonstrating good inhibitory effects against multidrug-resistant bacteria.

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Abstract

This invention discloses a bispyridinium antibacterial compound with dual DNA and membrane targeting effects. The invention innovatively designs a novel antibacterial pyridinium molecule with bispyridine as its core structure. Through a nucleophilic substitution reaction between bromine and pyridine, it achieves flexible modular assembly of hydrophobic and positively charged groups. This invention cleverly utilizes the compound's hydrophobic and positively charged molecular structure characteristics, enabling it to simultaneously and effectively target and act on both the bacterial cell membrane and DNA, achieving dual targeting functionality.
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