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Martínez-Cifuentes M, Soto-Tapia E, Linares-Pipón C, Bradshaw B, Valenzuela-Hormazabal P, Ramírez D, Muñoz-Torres P, Parra C. Design of β-Keto Esters with Antibacterial Activity: Synthesis, In Vitro Evaluation, and Theoretical Assessment of Their Reactivity and Quorum-Sensing Inhibition Capacity. Pharmaceuticals (Basel) 2023; 16:1339. [PMID: 37895810 PMCID: PMC10610512 DOI: 10.3390/ph16101339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 09/15/2023] [Accepted: 09/18/2023] [Indexed: 10/29/2023] Open
Abstract
This work proposes the design of β-keto esters as antibacterial compounds. The design was based on the structure of the autoinducer of bacterial quorum sensing, N-(3-oxo-hexanoyl)-l-homoserine lactone (3-oxo-C6-HSL). Eight β-keto ester analogues were synthesised with good yields and were spectroscopically characterised, showing that the compounds were only present in their β-keto ester tautomer form. We carried out a computational analysis of the reactivity and ADME (absorption, distribution, metabolism, and excretion) properties of the compounds as well as molecular docking and molecular dynamics calculations with the LasR and LuxS quorum-sensing (QS) proteins, which are involved in bacterial resistance to antibiotics. The results show that all the compounds exhibit reliable ADME properties and that only compound 7 can present electrophile toxicity. The theoretical reactivity study shows that compounds 6 and 8 present a differential local reactivity regarding the rest of the series. Compound 8 presents the most promising potential in terms of its ability to interact with the LasR and LuxS QS proteins efficiently according to its molecular docking and molecular dynamics calculations. An initial in vitro antimicrobial screening was performed against the human pathogenic bacteria Pseudomonas aeruginosa and Staphylococcus aureus as well as the phytopathogenic bacteria Pseudomonas syringae and Agrobacterium tumefaciens. Compounds 6 and 8 exhibit the most promising results in the in vitro antimicrobial screening against the panel of bacteria studied.
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Affiliation(s)
- Maximiliano Martínez-Cifuentes
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Concepción 4070371, Chile; (E.S.-T.); (C.L.-P.)
| | - Emmanuel Soto-Tapia
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Concepción 4070371, Chile; (E.S.-T.); (C.L.-P.)
| | - Camila Linares-Pipón
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Concepción 4070371, Chile; (E.S.-T.); (C.L.-P.)
| | - Ben Bradshaw
- Laboratori de Química Orgánica, Facultat de Farmàcia, IBUB, Universitat de Barcelona, Av. Joan XXIII, s/n, 08028 Barcelona, Spain;
| | - Paulina Valenzuela-Hormazabal
- Departamento de Farmacología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción 4030000, Chile; (P.V.-H.); (D.R.)
| | - David Ramírez
- Departamento de Farmacología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción 4030000, Chile; (P.V.-H.); (D.R.)
| | - Patricio Muñoz-Torres
- Laboratorio de Patología Vegetal y Bioproductos, Facultad de Ciencias Agronómicas, Universidad de Tarapacá, Av. General Velásquez 1775, Arica 1000000, Chile
| | - Claudio Parra
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad de Concepción, Edmundo Larenas 129, Concepción 4070371, Chile; (E.S.-T.); (C.L.-P.)
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Hennessy MC, Gandhi H, O'Sullivan TP. Organocatalytic Asymmetric Peroxidation of γ,δ-Unsaturated β-Keto Esters-A Novel Route to Chiral Cycloperoxides. Molecules 2023; 28:molecules28114317. [PMID: 37298799 DOI: 10.3390/molecules28114317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/18/2023] [Accepted: 05/19/2023] [Indexed: 06/12/2023] Open
Abstract
A methodology for the asymmetric peroxidation of γ,δ-unsaturated β-keto esters is presented. Using a cinchona-derived organocatalyst, the target δ-peroxy-β-keto esters were obtained in high enantiomeric ratios of up to 95:5. Additionally, these δ-peroxy esters can be readily reduced to chiral δ-hydroxy-β-keto esters without impacting the β-keto ester functionality. Importantly, this chemistry opens up a concise route to chiral 1,2-dioxolanes, a common motif in many bioactive natural products, via a novel P2O5-mediated cyclisation of the corresponding δ-peroxy-β-hydroxy esters.
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Affiliation(s)
- Mary C Hennessy
- School of Chemistry, University College Cork, T12 YN60 Cork, Ireland
- Analytical and Biological Chemistry Research Facility, University College Cork, T12 YN60 Cork, Ireland
| | - Hirenkumar Gandhi
- School of Chemistry, University College Cork, T12 YN60 Cork, Ireland
- Analytical and Biological Chemistry Research Facility, University College Cork, T12 YN60 Cork, Ireland
| | - Timothy P O'Sullivan
- School of Chemistry, University College Cork, T12 YN60 Cork, Ireland
- Analytical and Biological Chemistry Research Facility, University College Cork, T12 YN60 Cork, Ireland
- School of Pharmacy, University College Cork, T12 YN60 Cork, Ireland
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Zhao Q, Wang L, Chen H, Wu Z, Zhao M, Lai M. Enzyme‐Catalyzed Synthesis, Odor Characteristics and Thermal Analysis of New Pyridine Esters. ChemistrySelect 2023. [DOI: 10.1002/slct.202204356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Affiliation(s)
- Qianrui Zhao
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University, 95 Wenhua Road Zhengzhou Henan Province 450002 P. R. China
| | - Longxin Wang
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University, 95 Wenhua Road Zhengzhou Henan Province 450002 P. R. China
| | - Haoran Chen
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University, 95 Wenhua Road Zhengzhou Henan Province 450002 P. R. China
| | - Zhiyong Wu
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University, 95 Wenhua Road Zhengzhou Henan Province 450002 P. R. China
| | - Mingqin Zhao
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University, 95 Wenhua Road Zhengzhou Henan Province 450002 P. R. China
| | - Miao Lai
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University, 95 Wenhua Road Zhengzhou Henan Province 450002 P. R. China
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Singh S, Kandasamy J. Synthesis of 1,3‐dicarbonyl compounds using N‐Cbz amides as an acyl source under transition metal‐free conditions at room temperature. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Shweta Singh
- IIT BHU: Indian Institute of Technology BHU Varanasi Chemistry INDIA
| | - Jeyakumar Kandasamy
- Indian Institute of Technology (BHU) Chemistry Varanasi 221005 Varanasi INDIA
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Das K, Majumdar S. Expedient approach for trans-esterification of β-keto esters under solvent free conditions using silica supported boric acid (SiO 2-H 3BO 3) as a recyclable catalyst. RSC Adv 2022; 12:21493-21502. [PMID: 35975067 PMCID: PMC9346990 DOI: 10.1039/d2ra03855b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 07/19/2022] [Indexed: 11/21/2022] Open
Abstract
A highly efficient trans-esterification of β-keto methyl/ethyl esters with primary, secondary, allylic, benzylic and chiral alcohols has been carried out in excellent yields under solvent-free conditions using silica supported boric acid as a heterogeneous catalyst. The surface morphology of the silica-boric acid catalyst (fresh and recycled) has been characterized by SEM and EDX techniques. This sustainable protocol resulted in a remarkable enhancement in the synthetic efficiency (87–95% yield) with high purity and eliminating the use of an environmentally toxic solvent. The work up procedure is very simple and the catalyst has been successfully recovered and recycled. The present methodology is also applicable for trans-esterification with chiral alcohols on a multi-gram scale without compromising the yield. Noteworthy features of this protocol are simple operational procedure, minimizing production of chemical waste, mild reaction conditions, easy preparation of the catalyst and its recyclability up to five cycles without any appreciable loss of catalytic activity. A simple, mild, high yielding and minimizing chemical waste procedure for trans-esterification of β-keto methyl/ethyl esters with alcohol groups was developed under solvent-free condition using silica-boric acid as recyclable heterogeneous catalyst.![]()
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Affiliation(s)
- Kamal Das
- Department of Chemistry, Tripura University Suryamaninagar 799 022 India +91-381-2374802 +91-381-237-9070
| | - Swapan Majumdar
- Department of Chemistry, Tripura University Suryamaninagar 799 022 India +91-381-2374802 +91-381-237-9070
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Zhang T, Yang Z, Zhou D, Meng F, Han Z, Huang H. Non-metal Lewis acid-catalyzed cross-Claisen condensation for β-keto esters. Org Biomol Chem 2021; 19:9163-9166. [PMID: 34642729 DOI: 10.1039/d1ob01785c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we disclose a new catalytic and highly chemoselective cross-Claisen condensation of esters. In the presence of TBSNTf2 as a non-metal Lewis acid, various esters can undergo cross-Claisen condensation to form β-keto esters which are important building blocks. Compared with the traditional Claisen condensation, this process, employing silyl ketene acetals (SKAs) as carbonic nucleophiles to achieve cross-Claisen condensation, requires mild conditions and has good tolerance of functional groups.
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Affiliation(s)
- Tianyu Zhang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China.
| | - Zhenkun Yang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China.
| | - Dapeng Zhou
- Hangmo New Materials Group Co., Ltd, Anji, China.
| | - Fuliang Meng
- Hangmo New Materials Group Co., Ltd, Anji, China.
| | - Zhengyu Han
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China.
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China. .,Hangmo New Materials Group Co., Ltd, Anji, China.
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Rao GBD, Anjaneyulu B, Kaushik MP, Prasad MR. β‐Ketoesters: An Overview and It's Applications via Transesterification. ChemistrySelect 2021. [DOI: 10.1002/slct.202102949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
| | - Bendi Anjaneyulu
- Department of Chemistry Faculty of Sciences Shree Guru Gobind Singh Tricentenary University Haryana 122505, P.B India
| | - Mahabir. P. Kaushik
- Amity School of Applied Sciences Amity University Gwalior 474005 Madhya Pradesh India
| | - Mailavaram. R. Prasad
- Department of Pharmaceutical Chemistry Shri Vishnu College of Pharmacy Vishnupur, Bhimavaram 534202, A.P. India
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