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Chen LJ, Liu YY, Zhao X, Yan XP. Vancomycin-Functionalized Porphyrinic Metal-Organic Framework PCN-224 with Enhanced Antibacterial Activity against Staphylococcus Aureus. Chem Asian J 2021; 16:2022-2026. [PMID: 34096181 DOI: 10.1002/asia.202100546] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/03/2021] [Indexed: 11/07/2022]
Abstract
A vancomycin (Van) modification strategy on a porphyrinic metal-organic framework (MOF) PCN-224 is presented. The obtained Van-PCN-224 gives the combined advantages of porphyrinic MOF and Van with high photosensitive activity and excellent targeted antibacterial activity against Staphylococcus aureus. The features make Van-PCN-224 promising for antimicrobial therapy.
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Affiliation(s)
- Li-Jian Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, P. R. China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, P. R. China
| | - Yao-Yao Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, P. R. China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, P. R. China
| | - Xu Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, P. R. China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, P. R. China
| | - Xiu-Ping Yan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, P. R. China.,Institute of Analytical Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, P. R. China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, P. R. China
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2
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Dong J, Davis AP. Molecular Recognition Mediated by Hydrogen Bonding in Aqueous Media. Angew Chem Int Ed Engl 2020; 60:8035-8048. [DOI: 10.1002/anie.202012315] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/14/2020] [Indexed: 12/16/2022]
Affiliation(s)
- Jinqiao Dong
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Anthony P. Davis
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
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3
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Dong J, Davis AP. Molecular Recognition Mediated by Hydrogen Bonding in Aqueous Media. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012315] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jinqiao Dong
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Anthony P. Davis
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
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4
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Umstätter F, Domhan C, Hertlein T, Ohlsen K, Mühlberg E, Kleist C, Zimmermann S, Beijer B, Klika KD, Haberkorn U, Mier W, Uhl P. Vancomycin Resistance Is Overcome by Conjugation of Polycationic Peptides. Angew Chem Int Ed Engl 2020; 59:8823-8827. [PMID: 32190958 PMCID: PMC7323874 DOI: 10.1002/anie.202002727] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Indexed: 01/09/2023]
Abstract
Multidrug-resistant bacteria represent one of the biggest challenges facing modern medicine. The increasing prevalence of glycopeptide resistance compromises the efficacy of vancomycin, for a long time considered as the last resort for the treatment of resistant bacteria. To reestablish its activity, polycationic peptides were conjugated to vancomycin. By site-specific conjugation, derivatives that bear the peptide moiety at four different sites of the antibiotic were synthesized. The most potent compounds exhibited an approximately 1000-fold increased antimicrobial activity and were able to overcome the most important types of vancomycin resistance. Additional blocking experiments using d-Ala-d-Ala revealed a mode of action beyond inhibition of cell-wall formation. The antimicrobial potential of the lead candidate FU002 for bacterial infection treatments could be demonstrated in an in vivo study. Molecular imaging and biodistribution studies revealed that conjugation engenders superior pharmacokinetics.
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Affiliation(s)
- Florian Umstätter
- Department of Nuclear MedicineHeidelberg University HospitalIm Neuenheimer Feld 40069120HeidelbergGermany
| | - Cornelius Domhan
- Institute of Pharmacy and Molecular BiotechnologyHeidelberg UniversityGermany
| | - Tobias Hertlein
- Institute for Molecular Infection Biology (IMIB)University of WürzburgGermany
| | - Knut Ohlsen
- Institute for Molecular Infection Biology (IMIB)University of WürzburgGermany
| | - Eric Mühlberg
- Department of Nuclear MedicineHeidelberg University HospitalIm Neuenheimer Feld 40069120HeidelbergGermany
| | - Christian Kleist
- Department of Nuclear MedicineHeidelberg University HospitalIm Neuenheimer Feld 40069120HeidelbergGermany
| | - Stefan Zimmermann
- Medical Microbiology and HygieneHeidelberg University HospitalGermany
| | - Barbro Beijer
- Department of Nuclear MedicineHeidelberg University HospitalIm Neuenheimer Feld 40069120HeidelbergGermany
| | - Karel D. Klika
- German Cancer Research Center (DKFZ)NMR Spectroscopy Analysis UnitGermany
| | - Uwe Haberkorn
- Department of Nuclear MedicineHeidelberg University HospitalGermany
- Clinical Cooperation Unit Nuclear MedicineGerman Cancer Research Center (DKFZ)Germany
- Translational Lung Research Center Heidelberg (TLRC)German Center for Lung Research (DZL)Germany
| | - Walter Mier
- Department of Nuclear MedicineHeidelberg University HospitalIm Neuenheimer Feld 40069120HeidelbergGermany
| | - Philipp Uhl
- Department of Nuclear MedicineHeidelberg University HospitalIm Neuenheimer Feld 40069120HeidelbergGermany
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5
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Umstätter F, Domhan C, Hertlein T, Ohlsen K, Mühlberg E, Kleist C, Zimmermann S, Beijer B, Klika KD, Haberkorn U, Mier W, Uhl P. Überwindung von Vancomycinresistenzen durch Modifikation mit polykationischen Peptiden. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Florian Umstätter
- Abteilung Nuklearmedizin Universitätsklinikum Heidelberg Im Neuenheimer Feld 400 69120 Heidelberg Deutschland
| | - Cornelius Domhan
- Institut für Pharmazie und Molekulare Biotechnologie Universität Heidelberg Deutschland
| | - Tobias Hertlein
- Institut für Molekulare Infektionsbiologie Universität Würzburg Deutschland
| | - Knut Ohlsen
- Institut für Molekulare Infektionsbiologie Universität Würzburg Deutschland
| | - Eric Mühlberg
- Abteilung Nuklearmedizin Universitätsklinikum Heidelberg Im Neuenheimer Feld 400 69120 Heidelberg Deutschland
| | - Christian Kleist
- Abteilung Nuklearmedizin Universitätsklinikum Heidelberg Im Neuenheimer Feld 400 69120 Heidelberg Deutschland
| | - Stefan Zimmermann
- Zentrum für Infektiologie Universitätsklinikum Heidelberg Deutschland
| | - Barbro Beijer
- Abteilung Nuklearmedizin Universitätsklinikum Heidelberg Im Neuenheimer Feld 400 69120 Heidelberg Deutschland
| | - Karel D. Klika
- Deutsches Krebsforschungszentrum (DKFZ) NMR-Analytik Deutschland
| | - Uwe Haberkorn
- Abteilung Nuklearmedizin Universitätsklinikum Heidelberg Deutschland
- Klinische Kooperationseinheit Nuklearmedizin Deutsches Krebsforschungszentrum Deutschland
- Translational Lung Research Center Heidelberg (TLRC) Deutsches Zentrum für Lungenforschung (DZL) Deutschland
| | - Walter Mier
- Abteilung Nuklearmedizin Universitätsklinikum Heidelberg Im Neuenheimer Feld 400 69120 Heidelberg Deutschland
| | - Philipp Uhl
- Abteilung Nuklearmedizin Universitätsklinikum Heidelberg Im Neuenheimer Feld 400 69120 Heidelberg Deutschland
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6
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Saha A, Wu CM, Peng R, Koodali R, Banerjee S. Facile Synthesis of 1,3,5-Triarylbenzenes and 4-Aryl-NH
-1,2,3-Triazoles Using Mesoporous Pd-MCM-41 as Reusable Catalyst. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801290] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Arijit Saha
- Department of Chemistry; Guru Ghasidas Vishwavidyalaya; 495009 Koni, Bilaspur C.G. India
| | - Chia-Ming Wu
- Department of Chemistry; University of South Dakota; 414E. Clark Street 57069 Vermillion SD USA
| | - Rui Peng
- Department of Chemistry; University of South Dakota; 414E. Clark Street 57069 Vermillion SD USA
| | - Ranjit Koodali
- Department of Chemistry; University of South Dakota; 414E. Clark Street 57069 Vermillion SD USA
| | - Subhash Banerjee
- Department of Chemistry; Guru Ghasidas Vishwavidyalaya; 495009 Koni, Bilaspur C.G. India
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7
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Nimmagadda SK, Mallojjala SC, Woztas L, Wheeler SE, Antilla JC. Enantioselective Synthesis of Chiral Oxime Ethers: Desymmetrization and Dynamic Kinetic Resolution of Substituted Cyclohexanones. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611602] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sri Krishna Nimmagadda
- Department of Chemistry; University of South Florida; 4202 East Fowler Avenue, CHE 205A Tampa FL 33620 USA
| | | | - Lukasz Woztas
- Department of Chemistry; University of South Florida; 4202 East Fowler Avenue, CHE 205A Tampa FL 33620 USA
| | - Steven E. Wheeler
- Department of Chemistry; Texas A&M University; College Station TX 77843 USA
| | - Jon C. Antilla
- Department of Chemistry; University of South Florida; 4202 East Fowler Avenue, CHE 205A Tampa FL 33620 USA
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8
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Nimmagadda SK, Mallojjala SC, Woztas L, Wheeler SE, Antilla JC. Enantioselective Synthesis of Chiral Oxime Ethers: Desymmetrization and Dynamic Kinetic Resolution of Substituted Cyclohexanones. Angew Chem Int Ed Engl 2017; 56:2454-2458. [DOI: 10.1002/anie.201611602] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Indexed: 01/25/2023]
Affiliation(s)
- Sri Krishna Nimmagadda
- Department of Chemistry; University of South Florida; 4202 East Fowler Avenue, CHE 205A Tampa FL 33620 USA
| | | | - Lukasz Woztas
- Department of Chemistry; University of South Florida; 4202 East Fowler Avenue, CHE 205A Tampa FL 33620 USA
| | - Steven E. Wheeler
- Department of Chemistry; Texas A&M University; College Station TX 77843 USA
| | - Jon C. Antilla
- Department of Chemistry; University of South Florida; 4202 East Fowler Avenue, CHE 205A Tampa FL 33620 USA
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9
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Silverman SM, Moses JE, Sharpless KB. Reengineering Antibiotics to Combat Bacterial Resistance: Click Chemistry [1,2,3]-Triazole Vancomycin Dimers with Potent Activity against MRSA and VRE. Chemistry 2016; 23:79-83. [PMID: 27747932 DOI: 10.1002/chem.201604765] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Indexed: 01/22/2023]
Abstract
Vancomycin has long been considered a drug of last resort. Its efficiency in treating multiple drug-resistant bacterial infections, particularly methicillin-resistant Staphylococcus aureus (MRSA), has had a profound effect on the treatment of life-threatening infections. However, the emergence of resistance to vancomycin is a cause for significant worldwide concern, prompting the urgent development of new effective treatments for antibiotic resistant bacterial infections. Harnessing the benefits of multivalency and cooperativity against vancomycin-resistant strains, we report a Click Chemistry approach towards reengineered vancomycin derivatives and the synthesis of a number of dimers with increased potency against MRSA and vancomycin resistant Enterococci (VRE; VanB). These semi-synthetic dimeric ligands were linked together with great efficiency using the powerful CuAAC reaction, demonstrating high levels of selectivity and purity.
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Affiliation(s)
- Steven M Silverman
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - John E Moses
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA.,School of Chemistry, University of Nottingham, Nottingham, NG7 2RD, UK
| | - K Barry Sharpless
- Department of Chemistry and The Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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10
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Abstract
The role of lipoteichoic acids (LTAs) from Gram-positive bacteria as immunostimulatory molecules was controversial for many years, as inadequate preparation methods as well as heterogeneous and endotoxin-contaminated commercial preparations led to conflicting results. An improved purification methodology for LTA now yields potent bioactive and chemically defined material, which is currently being characterized in various models. A synthetic analogue of Staphylococcus aureus LTA has proven the structure/function relationship. The key role of D-alanine esters for the immune response of LTA was confirmed by synthetic derivatives. The glycolipid anchor of LTA plays a central role analogous to the lipid A of LPS. Methodological aspects and criteria for quality assessment of LTA preparations are discussed.
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Affiliation(s)
- Siegfried Morath
- Department of Biochemical Pharmacology, University of Konstanz, Konstanz, Germany, European Center for the Validation of Alternative Methods (ECVAM), Joint Research Center, Ispra, Italy
| | - Sonja von Aulock
- Department of Biochemical Pharmacology, University of Konstanz, Konstanz, Germany
| | - Thomas Hartung
- Department of Biochemical Pharmacology, University of Konstanz, Konstanz, Germany, , European Center for the Validation of Alternative Methods (ECVAM), Joint Research Center, Ispra, Italy
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11
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Chellat MF, Raguž L, Riedl R. Targeting Antibiotic Resistance. Angew Chem Int Ed Engl 2016; 55:6600-26. [PMID: 27000559 PMCID: PMC5071768 DOI: 10.1002/anie.201506818] [Citation(s) in RCA: 294] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 10/10/2015] [Indexed: 12/11/2022]
Abstract
Finding strategies against the development of antibiotic resistance is a major global challenge for the life sciences community and for public health. The past decades have seen a dramatic worldwide increase in human-pathogenic bacteria that are resistant to one or multiple antibiotics. More and more infections caused by resistant microorganisms fail to respond to conventional treatment, and in some cases, even last-resort antibiotics have lost their power. In addition, industry pipelines for the development of novel antibiotics have run dry over the past decades. A recent world health day by the World Health Organization titled "Combat drug resistance: no action today means no cure tomorrow" triggered an increase in research activity, and several promising strategies have been developed to restore treatment options against infections by resistant bacterial pathogens.
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Affiliation(s)
- Mathieu F Chellat
- Institute of Chemistry and Biotechnology, Center for Organic and Medicinal Chemistry, Zurich University of Applied Sciences (ZHAW), Einsiedlerstrasse 31, 8820, Wädenswil, Switzerland
| | - Luka Raguž
- Institute of Chemistry and Biotechnology, Center for Organic and Medicinal Chemistry, Zurich University of Applied Sciences (ZHAW), Einsiedlerstrasse 31, 8820, Wädenswil, Switzerland
| | - Rainer Riedl
- Institute of Chemistry and Biotechnology, Center for Organic and Medicinal Chemistry, Zurich University of Applied Sciences (ZHAW), Einsiedlerstrasse 31, 8820, Wädenswil, Switzerland.
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12
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Affiliation(s)
- Mathieu F. Chellat
- Institut für Chemie und Biotechnologie, FS Organische Chemie und Medizinalchemie; Zürcher Hochschule für Angewandte Wissenschaften (ZHAW); Einsiedlerstrasse 31 CH-8820 Wädenswil Schweiz
| | - Luka Raguž
- Institut für Chemie und Biotechnologie, FS Organische Chemie und Medizinalchemie; Zürcher Hochschule für Angewandte Wissenschaften (ZHAW); Einsiedlerstrasse 31 CH-8820 Wädenswil Schweiz
| | - Rainer Riedl
- Institut für Chemie und Biotechnologie, FS Organische Chemie und Medizinalchemie; Zürcher Hochschule für Angewandte Wissenschaften (ZHAW); Einsiedlerstrasse 31 CH-8820 Wädenswil Schweiz
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13
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Beyeh NK, Pan F, Bhowmik S, Mäkelä T, Ras RHA, Rissanen K. N-Alkyl Ammonium Resorcinarene Salts as High-Affinity Tetravalent Chloride Receptors. Chemistry 2015; 22:1355-61. [PMID: 26671730 DOI: 10.1002/chem.201504514] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Indexed: 11/10/2022]
Abstract
N-Alkyl ammonium resorcinarene salts (NARYs, Y=triflate, picrate, nitrate, trifluoroacetates and NARBr) as tetravalent receptors, are shown to have a strong affinity for chlorides. The high affinity for chlorides was confirmed from a multitude of exchange experiments in solution (NMR and UV/Vis), gas phase (mass spectrometry), and solid-state (X-ray crystallography). A new tetra-iodide resorcinarene salt (NARI) was isolated and fully characterized from exchange experiments in the solid-state. Competition experiments with a known monovalent bis-urea receptor (5) with strong affinity for chloride, reveals these receptors to have a much higher affinity for the first two chlorides, a similar affinity as 5 for the third chloride, and lower affinity for the fourth chloride. The receptors affinity toward chloride follows the trend K1 ≫K2 ≫K3 ≈5>K4, with Ka =5011 m(-1) for 5 in 9:1 CDCl3/[D6]DMSO.
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Affiliation(s)
- N Kodiah Beyeh
- Aalto University, School of Science, Department of Applied Physics, Puumiehenkuja 2, 02150, Espoo, Finland. .,University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box. 35, 40014, Jyvaskyla, Finland.
| | - Fangfang Pan
- University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box. 35, 40014, Jyvaskyla, Finland
| | - Sandip Bhowmik
- University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box. 35, 40014, Jyvaskyla, Finland
| | - Toni Mäkelä
- University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box. 35, 40014, Jyvaskyla, Finland
| | - Robin H A Ras
- Aalto University, School of Science, Department of Applied Physics, Puumiehenkuja 2, 02150, Espoo, Finland
| | - Kari Rissanen
- University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box. 35, 40014, Jyvaskyla, Finland.
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14
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Weidner K, Sun Z, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Aldol Reaction of an α-Azido Amide. Angew Chem Int Ed Engl 2015; 54:6236-40. [DOI: 10.1002/anie.201501607] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Indexed: 11/12/2022]
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15
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Weidner K, Sun Z, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Aldol Reaction of an α-Azido Amide. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501607] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Yim G, Kalan L, Koteva K, Thaker MN, Waglechner N, Tang I, Wright GD. Harnessing the Synthetic Capabilities of Glycopeptide Antibiotic Tailoring Enzymes: Characterization of the UK-68,597 Biosynthetic Cluster. Chembiochem 2014; 15:2613-23. [DOI: 10.1002/cbic.201402179] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Indexed: 11/11/2022]
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17
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Treviño J, Bayón C, Ardá A, Marinelli F, Gandolfi R, Molinari F, Jimenez-Barbero J, Hernáiz MJ. New Insights into Glycopeptide Antibiotic Binding to Cell Wall Precursors using SPR and NMR Spectroscopy. Chemistry 2014; 20:7363-72. [DOI: 10.1002/chem.201303310] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 04/02/2014] [Indexed: 11/09/2022]
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18
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O'Connell KMG, Hodgkinson JT, Sore HF, Welch M, Salmond GPC, Spring DR. Die Bekämpfung multiresistenter Bakterien: aktuelle Strategien zur Entdeckung neuer Antibiotika. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209979] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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O'Connell KMG, Hodgkinson JT, Sore HF, Welch M, Salmond GPC, Spring DR. Combating Multidrug-Resistant Bacteria: Current Strategies for the Discovery of Novel Antibacterials. Angew Chem Int Ed Engl 2013; 52:10706-33. [DOI: 10.1002/anie.201209979] [Citation(s) in RCA: 310] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Revised: 02/25/2013] [Indexed: 11/07/2022]
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20
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Van Den Berge E, Pospíšil J, Trieu-Van T, Collard L, Robiette R. Planar Chirality of Imidazole-Containing Macrocycles - Understanding and Tuning Atropisomerism. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100805] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Mateus P, Delgado R, Brandão P, Félix V. Recognition of Oxalate by a Copper(II) Polyaza Macrobicyclic Complex. Chemistry 2011; 17:7020-31. [DOI: 10.1002/chem.201100428] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2011] [Indexed: 11/10/2022]
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22
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Sanders JKM. Dudley Williams. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/anie.201100049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Sanders JKM. Dudley H. Williams. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201100049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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24
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Dufour J, Neuville L, Zhu J. Intramolecular Suzuki-Miyaura reaction for the total synthesis of signal peptidase inhibitors, arylomycins A(2) and B(2). Chemistry 2010; 16:10523-34. [PMID: 20658499 DOI: 10.1002/chem.201000924] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Development of the total syntheses of arylomycins A(1) and B(2) is detailed. Key features of our approach include 1) formation of 14-membered meta,meta-cyclophane by an intramolecular Suzuki-Miyaura reaction; 2) incorporation of N-Me-4-hydroxyphenylglycine into the cyclization precursor, which avoids the late-stage low-yielding N-methylation step; 3) segment coupling of a fully elaborated peptide side chain to the macrocycle, which makes the synthesis highly convergent. Overall, arylomycin A(2) was obtained in 13 steps from L-Tyr for the longest linear sequence, in 13 % overall yield. Arylomycin B(2) was synthesized in 10 steps from L-3-nitro-Tyr, in 10 % overall yield.
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Affiliation(s)
- Jeremy Dufour
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, 1, avenue de la terrasse, 91198 Gif-sur-Yvette, France
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26
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Wang Z, Bois-Choussy M, Jia Y, Zhu J. Total Synthesis of Complestatin (Chloropeptin II). Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200906797] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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27
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Wang Z, Bois-Choussy M, Jia Y, Zhu J. Total Synthesis of Complestatin (Chloropeptin II). Angew Chem Int Ed Engl 2010; 49:2018-22. [DOI: 10.1002/anie.200906797] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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28
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Senthilvelan A, Ho IT, Chang KC, Lee GH, Liu YH, Chung WS. Cooperative Recognition of a Copper Cation and Anion by a Calix[4]arene Substituted at the Lower Rim by a β-Amino-α,β-Unsaturated Ketone. Chemistry 2009; 15:6152-60. [DOI: 10.1002/chem.200802654] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Yang Z, Vorpagel ER, Laskin J. Influence of the charge state on the structures and interactions of vancomycin antibiotics with cell-wall analogue peptides: experimental and theoretical studies. Chemistry 2009; 15:2081-90. [PMID: 19156658 DOI: 10.1002/chem.200802010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Charge matters! The charge state significantly influences the conformation and the binding energy between vancomycin antibiotic and bacterial cell-wall analogue peptides (see figure). Surface-induced dissociation (SID) studies provide a quantitative comparison between the stabilities of different charge states of the complex.In this study we examined the effect of the charge state on the energetics and dynamics of dissociation of the noncovalent complex between the vancomycin and the cell-wall peptide analogue N(alpha),N(epsilon)-diacetyl-L-Lys-D-Ala-D-Ala (V-Ac(2)LKdAdA). The binding energies between the vancomycin and the peptide were obtained from the RRKM (Rice, Ramsperger, Kassel, Marcus) modeling of the time- and energy-resolved surface-induced dissociation (SID) experiments. Our results demonstrate that the stability of the complex towards fragmentation increases in the order: doubly protonated<singly protonated<deprotonated. Dissociation of the singly protonated and singly deprotonated complex is characterized by very large entropy effects, which indicate a substantial increase in the conformational flexibility of the resulting products. The experimental threshold energies of (1.75+/-0.08) eV ((40.3+/-1.8) kcal mol(-1)) and (1.34+/-0.08) eV ((30.9+/-1.8) kcal mol(-1)) obtained for the deprotonated and singly protonated complexes, respectively, are in excellent agreement with the results of density functional theory calculations. The increased stability of the deprotonated complex observed experimentally is attributed to the presence of three charged sites in the deprotonated complex, as compared with only one charged site in the singly protonated complex. The low binding energy of (0.93+/-0.04) eV ((21.4+/-0.9) kcal mol(-1)) obtained for the doubly protonated complex suggests that this ion is destabilized by Coulomb repulsion between the singly protonated vancomycin and the singly protonated peptide comprising the complex.
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Affiliation(s)
- Zhibo Yang
- Chemical and Materials Sciences Division, Pacific Northwest National Laboratory, P.O. Box 999 (K8-88), Richland, WA 99352, USA
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30
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Jia Y, Bois-Choussy M, Zhu J. Synthesis of Diastereomers of Complestatin and Chloropeptin I: Substrate-Dependent Atropstereoselectivity of the Intramolecular Suzuki–Miyaura Reaction. Angew Chem Int Ed Engl 2008; 47:4167-72. [DOI: 10.1002/anie.200800599] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Jia Y, Bois-Choussy M, Zhu J. Synthesis of Diastereomers of Complestatin and Chloropeptin I: Substrate-Dependent Atropstereoselectivity of the Intramolecular Suzuki–Miyaura Reaction. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200800599] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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32
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Ghalit N, Reichwein JF, Hilbers HW, Breukink E, Rijkers DTS, Liskamp RMJ. Synthesis of bicyclic alkene-/alkane-bridged nisin mimics by ring-closing metathesis and their biochemical evaluation as lipid II binders: toward the design of potential novel antibiotics. Chembiochem 2007; 8:1540-54. [PMID: 17674393 DOI: 10.1002/cbic.200700244] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This report describes the design, synthesis, and biochemical evaluation of alkene- and alkane-bridged AB(C)-ring mimics of the lantibiotic nisin. Nisin belongs to a class of natural antimicrobial peptides, and has a unique mode of action: its AB(C)-ring system binds to the pyrophosphate moiety of lipid II. This mode of action was the rationale for the design of smaller nisin-derived peptides to obtain novel potential antibiotics. As a conformational constraint the thioether bridge was mimicked by an alkene- or alkane isostere. The peptides of the linear individual ring precursors were synthesized on solid support or in solution, and cyclized by ring-closing metathesis in solution with overall yields of between 36 and 89 %. The individual alkene-bridged macrocycles were assembled in solution by using carbodiimide-based synthesis protocols for the corresponding AB(C)-ring mimics. These compounds were tested for their binding affinity toward lipid II by evaluation of their potency to inhibit nisin-induced carboxyfluorescein release from large unilamellar vesicles. It was found that these AB(C)-ring mimics were not able to induce membrane leakage; however, they acted by inhibiting nisin-induced carboxyfluorescein release; this indicates their affinity toward lipid II. These results imply that an alkene or alkane moiety is a suitable thioether bridge mimic.
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Affiliation(s)
- Nourdin Ghalit
- Medicinal Chemistry & Chemical Biology, Utrecht Institute for Pharmaceutical Sciences, Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands
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Abstract
Covalent fusion of two artificial recognition motifs for arginine and aspartate resulted in a new class of ditopic RGD receptor molecules, 1-4. The two binding sites for the oppositely charged amino acid residues are linked by either flexible linkers of different length (in 1-3) or a rigid aromatic spacer (in 4). These spacers are shown to be critical for the complexation efficiency of the artificial hosts. If the linkers are too flexible, as in 1-3, an undesired intramolecular self-association occurs within the host and competes with, and thereby weakens, substrate binding. The rigid aromatic linker in 4 prevents any intramolecular self-association and hence efficient RGD binding is observed, even in buffered water (association constant of K(a) approximately 3000 m(-1)). A further increase in hydrophobic contacts, as in host 16, can complement the specific Coulomb attractions, thereby leading to an even more stable complex (Ka=5000 m(-1)). The recognition events have been studied with NMR spectroscopy, UV/Vis spectroscopy, and fluorescence titrations.
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Affiliation(s)
- Carsten Schmuck
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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34
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Schmuck C, Hernandez-Folgado L. Synthesis of a new artificial host for the binding of dipeptides in water. Org Biomol Chem 2007; 5:2390-4. [PMID: 17637958 DOI: 10.1039/b707873k] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An artificial peptide receptor was prepared by a simple procedure. Initial binding studies (UV titrations) in buffered water showed preferential complexation of N-acetyl-dipeptide carboxylates containing alanine in the C-terminal position in comparison with simple amino acids, other dipeptides and two tripeptides.
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Affiliation(s)
- Carsten Schmuck
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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35
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von Nussbaum F, Brands M, Hinzen B, Weigand S, Häbich D. Antibacterial natural products in medicinal chemistry--exodus or revival? Angew Chem Int Ed Engl 2007; 45:5072-129. [PMID: 16881035 DOI: 10.1002/anie.200600350] [Citation(s) in RCA: 467] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
To create a drug, nature's blueprints often have to be improved through semisynthesis or total synthesis (chemical postevolution). Selected contributions from industrial and academic groups highlight the arduous but rewarding path from natural products to drugs. Principle modification types for natural products are discussed herein, such as decoration, substitution, and degradation. The biological, chemical, and socioeconomic environments of antibacterial research are dealt with in context. Natural products, many from soil organisms, have provided the majority of lead structures for marketed anti-infectives. Surprisingly, numerous "old" classes of antibacterial natural products have never been intensively explored by medicinal chemists. Nevertheless, research on antibacterial natural products is flagging. Apparently, the "old fashioned" natural products no longer fit into modern drug discovery. The handling of natural products is cumbersome, requiring nonstandardized workflows and extended timelines. Revisiting natural products with modern chemistry and target-finding tools from biology (reversed genomics) is one option for their revival.
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Affiliation(s)
- Franz von Nussbaum
- Bayer HealthCare AG, Medicinal Chemistry Europe, 42096 Wuppertal, Germany.
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36
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Schmuck C, Rupprecht D, Wienand W. Sequence-Dependent Binding of Dipeptides by an Artificial Receptor in Water. Chemistry 2006; 12:9186-95. [PMID: 16969772 DOI: 10.1002/chem.200600573] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
An artificial dipeptide receptor (1) was designed and observed to bind the deprotonated dipeptide Ac-D-Ala-D-Ala-OH in buffered water with K = 33,100 M(-1), whereas other dipeptides such as Ac-Gly-Gly-OH or Ac-D-Val-D-Val-OH were bound less efficiently, by factors of more than 10 (K < 3000 M(-1)). The efficient binding and the pronounced sequence selectivity are the result of a combination of strong electrostatic contacts and size-discriminating hydrophobic interactions. To provide such a combination, a guanidiniocarbonylpyrrole cation was attached to a novel cyclotribenzylene-substituted alanine derivative 5, to provide a hydrophobic bowl-shaped cavity just large enough to bind a methyl group but not any larger alkyl chains, thus causing the receptor to prefer alanine to valine. We describe the synthesis of 1 and the evaluation of its complexation properties in UV and fluorescence titration studies.
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Affiliation(s)
- Carsten Schmuck
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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37
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Bringmann G, Scharl H, Maksimenka K, Radacki K, Braunschweig H, Wich P, Schmuck C. Atropodiastereoselective Cleavage of Configurationally Unstable Biaryl Lactones with Amino Acid Esters. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600311] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
With the exception of palladium-catalyzed cross-couplings, no other group of reactions has had such a profound impact on the formation of carbon-carbon bonds and the art of total synthesis in the last quarter of a century than the metathesis reactions of olefins, enynes, and alkynes. Herein, we highlight a number of selected examples of total syntheses in which such processes played a crucial role and which imparted to these endeavors certain elements of novelty, elegance, and efficiency. Judging from their short but impressive history, the influence of these reactions in chemical synthesis is destined to increase.
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Affiliation(s)
- K C Nicolaou
- Department of Chemistry and Skaggs Institute for Chemical Biology, Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.
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39
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von Nussbaum F, Brands M, Hinzen B, Weigand S, Häbich D. Antibakterielle Naturstoffe in der medizinischen Chemie – Exodus oder Renaissance? Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600350] [Citation(s) in RCA: 142] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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40
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Jia Y, Ma N, Liu Z, Bois-Choussy M, Gonzalez-Zamora E, Malabarba A, Brunati C, Zhu J. Design and Synthesis of Simple Macrocycles Active Against Vancomycin-ResistantEnterococci (VRE). Chemistry 2006; 12:5334-51. [PMID: 16634107 DOI: 10.1002/chem.200600137] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
16-membered meta,para-cyclophanes mimicking the vancomycin binding pocket (D-O-E ring) were designed and synthesized. The structural key features of these biaryl ether containing macrocycles are (1) the presence of beta-amino-alpha-hydroxy acid or alpha,beta-diamino acid as the C-terminal component of the cyclopeptide and (2) the presence of a hydrophobic chain or lipidated aminoglucose at the appropriate position. Cycloetherification by an intramolecular nucleophilic aromatic substitution reaction (S(N)Ar) is used as the key step for the construction of the macrocycle. The atropselectivity of this ring-closure reaction is found to be sensitive to the peptide backbone and chemoselective cyclization (phenol versus primary amine) is achievable. Glycosylation of phenol was realized with freshly prepared 3,4,6-tri-O-acetyl-2-N-lauroyl-2-amino-2-deoxy-alpha-D-glucopyranosyl bromide under phase-transfer conditions. Minimum inhibitory concentrations for all of the derivatives are measured by using a standard microdilution assay, and potent bioactivities against both sensitive and resistant strains are found for some of these compounds (MIC (minimum inhibitory concentration) = 4 microg mL(-1) against VRE). From these preliminary SAR studies, it was anticipated that both the presence of a hydrophobic substituent and an appropriate structure of the macrocycle were required for this series of compounds to be active against VRE.
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Affiliation(s)
- Yanxing Jia
- Institut de Chimie des Substances Naturelles, CNRS, 91198 Gif-sur-Yvette Cedex, France
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41
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Cohen Y, Avram L, Frish L. Diffusion NMR spectroscopy in supramolecular and combinatorial chemistry: an old parameter--new insights. Angew Chem Int Ed Engl 2006; 44:520-54. [PMID: 15625667 DOI: 10.1002/anie.200300637] [Citation(s) in RCA: 916] [Impact Index Per Article: 50.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Intermolecular interactions in solution play an important role in molecular recognition, which lies at the heart of supramolecular and combinatorial chemistry. Diffusion NMR spectroscopy gives information over such interactions and has become the method of choice for simultaneously measuring diffusion coefficients of multicomponent systems. The diffusion coefficient reflects the effective size and shape of a molecular species. Applications of this technique include the estimation of association constants and mapping the intermolecular interactions in multicomponent systems as well as investigating aggregation, ion pairing, encapsulation, and the size and structure of labile systems. Diffusion NMR spectroscopy can also be used to virtually separate mixtures and screen for specific ligands of different receptors, and may assist in finding lead compounds.
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Affiliation(s)
- Yoram Cohen
- School of Chemistry, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel.
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42
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Schmuck C, Wich P. Sequence-Dependent Stereoselectivity in the Binding of Tetrapeptides in Water by a Flexible Artificial Receptor. Angew Chem Int Ed Engl 2006; 45:4277-81. [PMID: 16739145 DOI: 10.1002/anie.200601046] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Carsten Schmuck
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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43
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Schmuck C, Wich P. Sequence-Dependent Stereoselectivity in the Binding of Tetrapeptides in Water by a Flexible Artificial Receptor. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200601046] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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44
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Spencelayh MJ, Cheng Y, Bushby RJ, Bugg TDH, Li JJ, Henderson PJF, O'Reilly J, Evans SD. Antibiotic Action and Peptidoglycan Formation on Tethered Lipid Bilayer Membranes. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200504035] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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45
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Spencelayh MJ, Cheng Y, Bushby RJ, Bugg TDH, Li JJ, Henderson PJF, O'Reilly J, Evans SD. Antibiotic Action and Peptidoglycan Formation on Tethered Lipid Bilayer Membranes. Angew Chem Int Ed Engl 2006; 45:2111-6. [PMID: 16498693 DOI: 10.1002/anie.200504035] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Michael J Spencelayh
- Centre for Self-Organising Molecular systems University of Leeds, Leeds, LS2 9JT, UK
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46
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Gibson SE, Lecci C. Aminosäurehaltige Makrocyclen – anwendungsnahe Systeme oder nur Syntheseziele? Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200503428] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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47
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Gibson SE, Lecci C. Amino Acid Derived Macrocycles—An Area Driven by Synthesis or Application? Angew Chem Int Ed Engl 2006; 45:1364-77. [PMID: 16444788 DOI: 10.1002/anie.200503428] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The synthesis, structure, and physical properties of macrocycles have fascinated chemists for many years. Their inherent properties make them useful in areas as diverse as ion transport across membranes, development of new antibiotics, and catalysis. In this Review, the authors examine the chemistry of macrocycles containing non-peptidic amino acid derived molecules; the analysis is discussed in terms of function, rather than structure or synthesis. It is revealed that the diverse and imaginative structures created by synthetic chemists are not being fully exploited in application-driven endeavors.
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Affiliation(s)
- Susan E Gibson
- Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AY, UK.
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48
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Schmuck C, Heil M. One-Armed Artificial Receptors for the Binding of Polar Tetrapeptides in Water: Probing the Substrate Selectivity of a Combinatorial Receptor Library. Chemistry 2006; 12:1339-48. [PMID: 16315202 DOI: 10.1002/chem.200501062] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We have recently developed a new class of one-armed artificial receptors 1 for the binding of the polar tetrapeptide N-Ac-D-Glu-L-Lys-D-Ala-D-Ala-OH (EKAA) 2 in water using a combined combinatorial and statistical approach. We have now further probed the substrate selectivity of this receptor library 1 by screening a second tetrapeptide substrate (3) with the inverse sequence N-Ac-D-Ala-D-Ala-L-Lys-D-Glu-OH (AAKE). This "inverse" substrate is also efficiently bound by our receptors, with K(ass) approximately 6000 M(-1) for the best receptors, as determined both by a quantitative on-bead binding assay and by UV and fluorescence titration studies in free solution. Hence, the inverse tetrapeptide 3 is in general bound two to three times less efficiently than the "normal" peptide 2 (K(ass) approximately 17,000 M(-1)), even though the complexation mainly involves long-range electrostatic interactions and both the receptor and substrate are rather flexible. Molecular modeling and ab initio calculations have been used to rationalize the observed substrate selectivity and to analyze the various binding interactions within the complex.
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Affiliation(s)
- Carsten Schmuck
- Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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49
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Schmuck C, Heil M, Scheiber J, Baumann K. Ladungswechselwirkungen machen es möglich: ein kombinierter statistischer und kombinatorischer Ansatz zur Auffindung künstlicher Rezeptoren für die Bindung von Tetrapeptiden in Wasser. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200501812] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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50
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Schmuck C, Heil M, Scheiber J, Baumann K. Charge Interactions Do the Job: A Combined Statistical and Combinatorial Approach to Finding Artificial Receptors for Binding Tetrapeptides in Water. Angew Chem Int Ed Engl 2005; 44:7208-12. [PMID: 16231382 DOI: 10.1002/anie.200501812] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Carsten Schmuck
- Universität Würzburg, Institut für Organische Chemie, Am Hubland, 97074 Würzburg, Germany.
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