应用化学 ›› 2024, Vol. 41 ›› Issue (7): 966-975.DOI: 10.19894/j.issn.1000-0518.230394

• 研究论文 • 上一篇    下一篇

侧链衍生季铵盐型氯胺的合成及抗菌应用

李令东1,2(), 张颂伟2, 张维伦2, 刘鹏飞2, 于江际鸣2, 周豪2   

  1. 1.大连理工大学精细化工国家重点实验室,盘锦 124221
    2.大连理工大学化工海洋与生命学院,盘锦 124221
  • 收稿日期:2023-12-19 接受日期:2024-05-15 出版日期:2024-07-01 发布日期:2024-08-03
  • 通讯作者: 李令东
  • 基金资助:
    国家自然科学基金(41977197)

Synthesis of Side Chain Derived Quaternary Ammonium N-Chloramines for Antibacterial Applications

Ling-Dong LI1,2(), Song-Wei ZHANG2, Wei-Lun ZHANG2, Peng-Fei LIU2, Jiang-Jiming YU2, Hao ZHOU2   

  1. 1.State Key Laboratory of Fine Chemicals,Dalian University of Technology,Panjin 124221,China
    2.School of Chemical Engineering,Life and Ocean Science,Dalian University of Technology,Panjin 124221,China
  • Received:2023-12-19 Accepted:2024-05-15 Published:2024-07-01 Online:2024-08-03
  • Contact: Ling-Dong LI
  • About author:lild@dlut.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(41977197)

摘要:

以5,5-二甲基海因(DMH)为原料,设计合成了一系列侧链衍生的季铵盐型氯胺抗菌剂(10-14),表征了前体和氯胺结构。 以大肠杆菌(E.coli)和金黄葡萄球菌(S.aureus)为模式菌株,以三甲基季铵盐氯胺1为对照,初步测试了氯胺10-14的抗菌活性。 结果表明,氯胺10-13抗菌能力随侧链变长先增强后减弱,其中三丁基季铵盐氯胺12S.aureusE.coli的杀灭对数(KL)值分别为1.07±0.09和6.49,表现出这一系列中相对更优的抗菌活性,这可能是12达到了分子触杀所需的最佳亲疏水平衡状态,与菌体细胞膜作用更强所致。 此外,携羟乙基侧链氯胺14实现了对S.aureusE.coli全杀,展现了10-14中最出色的抗菌性能,这可能和氯胺分子更易穿透菌体细胞膜有关。 本工作制备的一系列高活性季铵盐氯胺抗菌剂,为更高效离子型氯胺抗菌剂的设计研发提供了参考借鉴。

关键词: 季铵盐型氯胺, 多步合成, 抗菌活性, 亲疏水平衡, 侧链衍生物

Abstract:

A series of side-chain derived quaternary ammonium (QA) N-chloramines (10-14) were designed and synthesized using commercial 5,5-dimethylhydantoin (DMH) as raw matesial, and the structures of precursors and corresponding N-chloramines were characterized. The antibacterial activity of chloramines 10-14 was preliminarily tested using Escherichia coliE.coli) and Staphylococcus aureusS.aureus) as model strains, and N-chloramine 1 as control. The results showed that antibacterial ability of 10-13 increased and then declined with the length of side chain increased. Namely, tributyl QA N-chloramine 12 with KL of 1.07±0.09 and 6.49 against S.aureus and E.coli, exhibited relatively higher antibacterial efficacy, possibly due to the preferable hydrophilic-lipophilic characteristic required for efficient contact killing. Furthermore, hydroxyethyl counterpart 14 achieved total killing of S.aureus and E.coli, demonstrating the towering antibacterial capability among N-chloramines 10-14, which may be attributed to its facile transportation across bacterial cell membrane. The series of efficacious N-chloramine disinfectants prepared in this work provide reference for the development of more efficient ionic N-chloramine antibacterial agents.

Key words: Quaternary ammonium N-chloramine, Multi-step chemical synthesis, Antibacterial ability, Hydrophilic-lipophilic balance, Side chain derivative

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