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Zhong R, Xu Z, Zhang S, Zeng M, Li H, Liu S, Lin S. Development of novel bisphenol derivatives with a membrane-targeting mechanism as potent gram-positive antibacterial agents. Eur J Med Chem 2024; 274:116544. [PMID: 38850855 DOI: 10.1016/j.ejmech.2024.116544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/18/2024] [Accepted: 05/28/2024] [Indexed: 06/10/2024]
Abstract
Antibiotic resistance is becoming increasingly severe. The development of small molecular antimicrobial peptides is regarded as a promising design strategy for antibiotics. Here, a series of bisphenol derivatives with amphiphilic structures were designed and synthesized as antibacterial agents by imitating the design strategy of antimicrobial peptides. After a series of structural optimizations, lead compound 43 was identified, which exhibited excellent antibacterial activity against Gram-positive bacterial strains (MICs = 0.78-1.56 μg/mL), poor hemolytic activity (HC50 > 200 μg/mL), and low cytotoxicity (CC50 > 100 μg/mL). Further biological evaluation results indicated that 43 exerted antibacterial effects by directly destroying bacterial cell membranes and displayed rapid bactericidal properties (within 0.5-1 h), leading to a very low probability of drug resistance. Moreover, in a murine model of corneal infection, 43 exhibited a strong in vivo antibacterial efficacy. These findings indicate that 43 is a promising candidate compound for the treatment of bacterial infections.
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Affiliation(s)
- Rongcui Zhong
- Affiliated Qingyuan Hospital, Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, State Key Laboratory of Respiratory Disease, and School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, China
| | - Zikai Xu
- Affiliated Qingyuan Hospital, Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, State Key Laboratory of Respiratory Disease, and School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, China
| | - Shujun Zhang
- Affiliated Qingyuan Hospital, Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, State Key Laboratory of Respiratory Disease, and School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, China
| | - Minghui Zeng
- Affiliated Qingyuan Hospital, Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, State Key Laboratory of Respiratory Disease, and School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, China
| | - Haizhou Li
- Affiliated Qingyuan Hospital, Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, State Key Laboratory of Respiratory Disease, and School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, China
| | - Shouping Liu
- Affiliated Qingyuan Hospital, Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, State Key Laboratory of Respiratory Disease, and School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, China.
| | - Shuimu Lin
- Affiliated Qingyuan Hospital, Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, State Key Laboratory of Respiratory Disease, and School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 511436, China.
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Ibrahim M, Halim SA, Latif A, Ahmad M, Ali S, Ullah S, Khalid A, Abdalla AN, Khan A, Al-Harrasi A, Ali M. Synthesis, biochemical and computational evaluations of novel bis-acylhydrazones of 2,2'-(1,1'-biphenyl)-4,4'-diylbis(oxy))di(acetohydrazide) as dual cholinesterase inhibitors. Bioorg Chem 2024; 144:107144. [PMID: 38281382 DOI: 10.1016/j.bioorg.2024.107144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/04/2024] [Accepted: 01/18/2024] [Indexed: 01/30/2024]
Abstract
A series of twenty-seven bis(acylhydrazones) were successfully synthesized with high yields through a multistep process, which entailed the esterification of hydroxyl groups, hydrazination with an excess of hydrazine hydrate, and subsequent reactions with various carbonyl moieties (aldehydes). In the final stage of synthesis, different chemical species including aromatic, heterocyclic, and aliphatic compounds were integrated into the framework. The resulting compounds were characterized using several spectroscopic techniques (1H NMR, 13C NMR, and mass spectrometry). Their anticholinesterase activities were assessed in vitro by examining their interactions with two cholinesterase enzymes: acetylcholinesterase (AChE) and butyrylcholinesterase (BChE). Among the synthesized hits, compounds 3, 5, 6, 9-12, and 14 exhibited good to moderate inhibition of AChE. Specifically, 10 (IC50 = 26.3 ± 0.4 μM) and 11 (IC50 = 28.4 ± 0.5 μM) showed good inhibitory activity against AChE, while 9, 12, 3, and 6 exhibited significant inhibition potential against AChE with IC50 values ranging from 35.2 ± 1.1 μM to 64.4 ± 0.3 μM. On the other hand, 5 (IC50 = 22.0 ± 1.1 μM) and 27 (IC50 = 31.3 ± 1.3 μM) displayed significant, and 19 (IC50 = 92.6 ± 0.4 μM) showed moderate inhibitory potential for BChE. Notably, 5 and 27 exhibited dual inhibition of AChE and BChE, with greater potency than the standard drug galantamine. The binding patterns of these molecules within the binding cavities of AChE and BChE were anticipated by molecular docking which showed good correlation with our in vitro findings. Further structural optimization of these molecules may yield more potent AChE and BChE inhibitors.
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Affiliation(s)
- Muhammad Ibrahim
- Department of Chemistry, University of Malakand, Chakdara 18800, Dir Lower, Khyber Pakhtunkhwa, Pakistan
| | - Sobia Ahsan Halim
- Natural and Medical Sciences Research Centre, University of Nizwa, PO Box 33, 616 Birkat Al Mauz, Nizwa, Oman
| | - Abdul Latif
- Department of Chemistry, University of Malakand, Chakdara 18800, Dir Lower, Khyber Pakhtunkhwa, Pakistan
| | - Manzoor Ahmad
- Department of Chemistry, University of Malakand, Chakdara 18800, Dir Lower, Khyber Pakhtunkhwa, Pakistan
| | - Sajid Ali
- Department of Chemistry, University of Malakand, Chakdara 18800, Dir Lower, Khyber Pakhtunkhwa, Pakistan
| | - Samee Ullah
- Department of Chemistry, University of Malakand, Chakdara 18800, Dir Lower, Khyber Pakhtunkhwa, Pakistan
| | - Asaad Khalid
- Substance Abuse and Toxicology Research Center, Jazan University, P.O. Box: 114, Jazan 45142, Saudi Arabia
| | - Ashraf N Abdalla
- Department of Pharmacology and Toxicology, College of Pharmacy, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Ajmal Khan
- Natural and Medical Sciences Research Centre, University of Nizwa, PO Box 33, 616 Birkat Al Mauz, Nizwa, Oman.
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Centre, University of Nizwa, PO Box 33, 616 Birkat Al Mauz, Nizwa, Oman.
| | - Mumtaz Ali
- Department of Chemistry, University of Malakand, Chakdara 18800, Dir Lower, Khyber Pakhtunkhwa, Pakistan.
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Jia Y, Jiang P, Wang X, Ablajan K. One-Pot, Metal-Free Synthesis of Allyl Sulfones in Water. J Org Chem 2024. [PMID: 38194354 DOI: 10.1021/acs.joc.3c01421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
A one-pot dehydration cross-coupling reaction between allyl alcohols and sodium sulfinates that provides allyl sulfones in good to excellent yields is presented. Its broad substrate scope includes symmetrical and asymmetrical α,α-diaryl- and α-aryl-substituted allylic alcohols and aryl and alkyl sodium sulfinates. For asymmetrical allylic substrates, the E isomer predominates with examples of excellent stereoselectivity. Control experiments provide the basis for a proposed radical-mediated mechanism. The metal-free procedure applies cheap and commercially available tetrabutylammonium tribromide as the catalyst and H2O as the solvent. Notable features of this simple, efficient, weakly toxic, and environmentally benign strategy include mild and convenient operating conditions and readily accessible starting materials.
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Affiliation(s)
- Yunfei Jia
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, People's Republic of China
| | - Ping Jiang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, People's Republic of China
| | - Xinqian Wang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, People's Republic of China
| | - Keyume Ablajan
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, People's Republic of China
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Natarajan P, Priya, Chuskit D. Persulfate-activated charcoal mixture: an efficient oxidant for the synthesis of sulfonated benzo[ d][1,3]oxazines from N-(2-vinylphenyl)amides and thiols in aqueous solution. RSC Adv 2021; 11:15573-15580. [PMID: 35481158 PMCID: PMC9029395 DOI: 10.1039/d1ra02377b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 04/20/2021] [Indexed: 11/21/2022] Open
Abstract
A series of 2,4-aryl-4-((arylsulfonyl)methyl)-4H-benzo[d][1,3]oxazines in good to excellent yields have directly been obtained from N-(2-vinylphenyl)amides and thiols by employing a mixture of K2S2O8-activated charcoal in aqueous acetonitrile solution at 50 °C. A plausible mechanism for the reaction is reported. It reveals that the reaction follows a radical pathway and the persulfate has been the oxygen source for formation of the sulfone group in the products. It is worth mentioning that this protocol utilizes an easily accessible K2S2O8-activated charcoal mixture and thiols, respectively, as an oxidant and sulfonylating precursors for the first time.
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Affiliation(s)
- Palani Natarajan
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University Chandigarh - 160014 India
| | - Priya
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University Chandigarh - 160014 India
| | - Deachen Chuskit
- Department of Chemistry & Centre for Advanced Studies in Chemistry, Panjab University Chandigarh - 160014 India
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