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Vacariu CM, Tanner ME. Recent Advances in the Synthesis and Biological Applications of Peptidoglycan Fragments. Chemistry 2022; 28:e202200788. [PMID: 35560956 DOI: 10.1002/chem.202200788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Indexed: 11/09/2022]
Abstract
The biosynthesis, breakdown, and modification of peptidoglycan (PG) play vital roles in both bacterial viability and in the response of human physiology to bacterial infection. Studies on PG biochemistry are hampered by the fact that PG is an inhomogeneous insoluble macromolecule. Chemical synthesis is therefore an important means to obtain PG fragments that may serve as enzyme substrates and elicitors of the human immune response. This review outlines the recent advances in the synthesis and biochemical studies of PG fragments, PG biosynthetic intermediates (such as Park's nucleotides and PG lipids), and PG breakdown products (such as muramyl dipeptides and anhydro-muramic acid-containing fragments). A rich variety of synthetic approaches has been applied to preparing such compounds since carbohydrate, peptide, and phospholipid chemical methodologies must all be applied.
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Affiliation(s)
- Condurache M Vacariu
- Department of Chemistry, University of British Columbia, V6T 1Z1, Vancouver, British Columbia, Canada
| | - Martin E Tanner
- Department of Chemistry, University of British Columbia, V6T 1Z1, Vancouver, British Columbia, Canada
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2
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Mitachi K, Mingle D, Effah W, Sánchez‐Ruiz A, Hevener KE, Narayanan R, Clemons WM, Sarabia F, Kurosu M. Concise Synthesis of Tunicamycin V and Discovery of a Cytostatic DPAGT1 Inhibitor. Angew Chem Int Ed Engl 2022; 61:e202203225. [PMID: 35594368 PMCID: PMC9329268 DOI: 10.1002/anie.202203225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Indexed: 11/11/2022]
Abstract
A short total synthesis of tunicamycin V (1), a non-selective phosphotransferase inhibitor, is achieved via a Büchner-Curtius-Schlotterbeck type reaction. Tunicamycin V can be synthesized in 15 chemical steps from D-galactal with 21 % overall yield. The established synthetic scheme is operationally very simple and flexible to introduce building blocks of interest. The inhibitory activity of one of the designed analogues 28 against human dolichyl-phosphate N-acetylglucosaminephosphotransferase 1 (DPAGT1) is 12.5 times greater than 1. While tunicamycins are cytotoxic molecules with a low selectivity, the novel analogue 28 displays selective cytostatic activity against breast cancer cell lines including a triple-negative breast cancer.
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Affiliation(s)
- Katsuhiko Mitachi
- Department of Pharmaceutical Sciences College of Pharmacy University of Tennessee Health Science Center 881 Madison Avenue Memphis TN 38163 USA
| | - David Mingle
- Department of Pharmaceutical Sciences College of Pharmacy University of Tennessee Health Science Center 881 Madison Avenue Memphis TN 38163 USA
| | - Wendy Effah
- Department of Medicine University of Tennessee Health Science Center 19 S. Manassas, Room 120 Memphis TN 38103 USA
| | - Antonio Sánchez‐Ruiz
- Faculty of Pharmacy Campus de Albacete Universidad de Castilla-La Mancha Avda. Dr. José María Sánchez Ibáñez S/N 02008 Albacete Spain
| | - Kirk E. Hevener
- Department of Pharmaceutical Sciences College of Pharmacy University of Tennessee Health Science Center 881 Madison Avenue Memphis TN 38163 USA
| | - Ramesh Narayanan
- Department of Medicine University of Tennessee Health Science Center 19 S. Manassas, Room 120 Memphis TN 38103 USA
| | - William M. Clemons
- Division of Chemistry and Chemical Engineering California Institute of Technology 1200 E. California Blvd. Pasadena CA 91125 USA
| | - Francisco Sarabia
- Department of Organic Chemistry Faculty of Sciences Universidad de Málaga, Campus de Teatinos 29071 Málaga Spain
| | - Michio Kurosu
- Department of Pharmaceutical Sciences College of Pharmacy University of Tennessee Health Science Center 881 Madison Avenue Memphis TN 38163 USA
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3
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Mitachi K, Mingle D, Effah W, Sánchez-Ruiz A, Hevener KE, Narayanan R, Clemons WM, Sarabia F, Kurosu M. Concise Synthesis of Tunicamycin V and Discovery of a Cytostatic DPAGT1 Inhibitor. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Katsuhiko Mitachi
- The University of Tennessee Health Science Center College of Pharmacy Pharmacy 881 Madison AvenueROOM 557 38163 MEMPHS UNITED STATES
| | - David Mingle
- The University of Tennessee Health Science Center College of Pharmacy Pharmacy 881 MADISON AVE 38163 MEMPHS UNITED STATES
| | - Wendy Effah
- University of Tennessee College of Medicine: The University of Tennessee Health Science Center College of Medicine Medicine UNITED STATES
| | | | - Kirk E. Hevener
- UTHSC College of Pharmacy Memphis: The University of Tennessee Health Science Center College of Pharmacy Pharmacy UNITED STATES
| | - Ramesh Narayanan
- University of Tennessee College of Medicine: The University of Tennessee Health Science Center College of Medicine Medicine 19, S. Manassas 38013 Memphis UNITED STATES
| | - William M. Clemons
- Caltech: California Institute of Technology Chemistry and Chemical Engineering UNITED STATES
| | - Francisco Sarabia
- University of Malaga: Universidad de Malaga Organic Chemistry UNITED STATES
| | - Michio Kurosu
- UTHSC College of Pharmacy Memphis: The University of Tennessee Health Science Center College of Pharmacy Department of Pharmaceutical Sciences, College of Pharmacy 881 MADISON AVEROOM 557 38163 Memphis UNITED STATES
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Arbour CA, Imperiali B. Backbone-Anchoring, Solid-Phase Synthesis Strategy To Access a Library of Peptidouridine-Containing Small Molecules. Org Lett 2022; 24:2170-2174. [PMID: 35271284 DOI: 10.1021/acs.orglett.2c00462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nucleoside diphosphate sugar (NDP-sugar) substrates provide the inspiration for nucleoside analogue inhibitor scaffolds. By employing solid-phase synthesis, we provide a method to access a library of peptidouridine inhibitors with both minimal compound handling and purification steps. Specifically, this strategy is exemplified by generating uridine diphosphate sugar (UDP-sugar) mimics, which allow for compound elaboration by altering the dipeptide composition, the N-terminal linkage, and a pendant aryl group. To exemplify the versatility, 41 unique nucleoside analogues are presented.
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Affiliation(s)
- Christine A Arbour
- Department of Biology and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Barbara Imperiali
- Department of Biology and Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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5
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Affiliation(s)
- Guozhi Xiao
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany University of Chinese Academy of Science Chinese Academy of Sciences 132 Lanhei Road Kunming 650201 China
| | - Haiqing He
- State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of Botany University of Chinese Academy of Science Chinese Academy of Sciences 132 Lanhei Road Kunming 650201 China
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Mitachi K, Kurosu SM, Gillman CD, Yun HG, Clemons WM, Kurosu M. A practical synthesis of a novel DPAGT1 inhibitor, aminouridyl phenoxypiperidinbenzyl butanamide (APPB) for in vivo studies. MethodsX 2019; 6:2305-2321. [PMID: 31667130 PMCID: PMC6812346 DOI: 10.1016/j.mex.2019.09.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 09/23/2019] [Indexed: 01/17/2023] Open
Abstract
Immunotherapy that targets N-linked glycans has not yet been developed due in large part to the lack of specificity of N-linked glycans between normal and malignant cells. N-Glycan chains are synthesized by the sequential action of glycosyl transferases in the Golgi apparatus. It is an overwhelming task to discover drug-like inhibitors of glycosyl transferases that block the synthesis of specific branching processes in cancer cells, killing tumor cells selectively. It has long been known that N-glycan biosynthesis can be inhibited by disruption of the first committed enzyme, dolichyl-phosphate N-acetylglucosaminephosphotransferase 1 (DPAGT1). Selective DPAGT1 inhibitors have the promising therapeutic potential for certain solid cancers that require increased branching of N-linked glycans in their growth progressions. Recently, we discovered that an anti-Clostridium difficile molecule, aminouridyl phenoxypiperidinbenzyl butanamide (APPB) showed DPAGT1 inhibitory activity with the IC50 value of 0.25 μM. It was confirmed that APPB inhibits N-glycosylation of β-catenin at 2.5 nM concentration. A sharp difference between APPB and tunicamycin was that the hemolytic activity of APPB is significantly attenuated (IC50 > 200 μM RBC). Water solubility of APPB is >350-times greater than that of tunicamycin (78.8 mg/mL for APPB, <0.2 mg/mL for tunicamycin). A novel DPAGT1 inhibitor, APPB selectively inhibits growth of the solid tumors (e.g. KB, LoVo, SK-OV-3, MDA-MB-432S, HCT116, Panc-1, and AsPC-1) at low μM concentrations, but does not inhibit growth of a leukemia cell (L1210) and the healthy cells (Vero and HPNE) at these concentrations. In vitro metabolic stability using rat liver microsomes indicated that a half-life (t1/2) of APPB is sufficiently long (>60 min) for in vivo studies (PK/PD, safety profiles, and in vivo efficacy) using animal models. We have refined all steps in the previously reported synthesis for APPB for larger-scale. This article summarizes protocols of gram-scale synthesis of APPB and its physicochemical data, and a convenient DPAGT1 assay. Remember that the abstract is what readers see first in electronic abstracting & indexing services. This is the advertisement of your article. Make it interesting, and easy to be understood. Be accurate and specific, keep it as brief as possible.
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Affiliation(s)
- Katsuhiko Mitachi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163, United States
| | - Shou M Kurosu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163, United States
| | - Cody D Gillman
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, United States
| | - Hyun Gi Yun
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, United States
| | - William M Clemons
- Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, United States
| | - Michio Kurosu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163, United States
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Biosynthetic and Synthetic Strategies for Assembling Capuramycin-Type Antituberculosis Antibiotics. Molecules 2019; 24:molecules24030433. [PMID: 30691073 PMCID: PMC6384614 DOI: 10.3390/molecules24030433] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 01/22/2019] [Accepted: 01/22/2019] [Indexed: 01/29/2023] Open
Abstract
Mycobacterium tuberculosis (Mtb) has recently surpassed HIV/AIDS as the leading cause of death by a single infectious agent. The standard therapeutic regimen against tuberculosis (TB) remains a long, expensive process involving a multidrug regimen, and the prominence of multidrug-resistant (MDR), extensively drug-resistant (XDR), and totally drug-resistant (TDR) strains continues to impede treatment success. An underexplored class of natural products—the capuramycin-type nucleoside antibiotics—have been shown to have potent anti-TB activity by inhibiting bacterial translocase I, a ubiquitous and essential enzyme that functions in peptidoglycan biosynthesis. The present review discusses current literature concerning the biosynthesis and chemical synthesis of capuramycin and analogs, seeking to highlight the potential of the capuramycin scaffold as a favorable anti-TB therapeutic that warrants further development.
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Mitachi K, Yun HG, Kurosu SM, Eslamimehr S, Lemieux MR, Klaić L, Clemons WM, Kurosu M. Novel FR-900493 Analogues That Inhibit the Outgrowth of Clostridium difficile Spores. ACS OMEGA 2018; 3:1726-1739. [PMID: 29503973 PMCID: PMC5830699 DOI: 10.1021/acsomega.7b01740] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 01/26/2018] [Indexed: 05/08/2023]
Abstract
The spectrum of antibacterial activity for the nucleoside antibiotic FR-900493 (1) can be extended by chemical modifications. We have generated a small focused library based on the structure of 1 and identified UT-17415 (9), UT-17455 (10), UT-17460 (11), and UT-17465 (12), which exhibit anti-Clostridium difficile growth inhibitory activity. These analogues also inhibit the outgrowth of C. difficile spores at 2× minimum inhibitory concentration. One of these analogues, 11, relative to 1 exhibits over 180-fold and 15-fold greater activity against the enzymes, phospho-MurNAc-pentapeptide translocase (MraY) and polyprenyl phosphate-GlcNAc-1-phosphate transferase (WecA), respectively. The phosphotransferase inhibitor 11 displays antimicrobial activity against several tested bacteria including Bacillus subtilis, Clostridium spp., and Mycobacterium smegmatis, but no growth inhibitory activity is observed against the other Gram-positive and Gram-negative bacteria. The selectivity index (Vero cell cytotoxicity/C. difficileantimicrobial activity) of 11 is approximately 17, and 11 does not induce hemolysis even at a 100 μM concentration.
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Affiliation(s)
- Katsuhiko Mitachi
- Department
of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, Tennessee 38163, United States
| | - Hyun Gi Yun
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, 1200 E. California Blvd, Pasadena, California 91125, United States
| | - Sara M. Kurosu
- Department
of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, Tennessee 38163, United States
| | - Shakiba Eslamimehr
- Department
of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, Tennessee 38163, United States
| | - Maddie R. Lemieux
- Department
of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, Tennessee 38163, United States
| | - Lada Klaić
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, 1200 E. California Blvd, Pasadena, California 91125, United States
| | - William M. Clemons
- Division
of Chemistry and Chemical Engineering, California
Institute of Technology, 1200 E. California Blvd, Pasadena, California 91125, United States
| | - Michio Kurosu
- Department
of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, Tennessee 38163, United States
- E-mail: . Phone: 901-448-1045. Fax: 901-448-6940 (M.K.)
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Mann D, Voogt S, van Zandvoort R, Keul H, Möller M, Verheijen M, Nascimento-Duplat D, Xu M, Urbach HP, Adam AJL, Buskens P. Protecting patches in colloidal synthesis of Au semishells. Chem Commun (Camb) 2017; 53:3898-3901. [PMID: 28322386 DOI: 10.1039/c7cc00689f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Protecting groups are commonly applied in multi-step molecular syntheses to protect one or multiple functional groups from reacting. After the reaction, they are removed from the molecule. In full analogy to this concept, we report the practical and scalable colloidal synthesis of Au semishells using polyphenylsiloxane protecting patches to prevent part of the surface of polystyrene nanoparticles from being covered with Au. After Au deposition, the patches are removed yielding Au semishells. We anticipate that this strategy can be extended to the synthesis of other types of non-centrosymmetric nanoparticles.
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Affiliation(s)
- Daniel Mann
- DWI - Leibniz Institute for Interactive Materials e.V., Forckenbeckstr. 50, 52056 Aachen, Germany and RWTH Aachen University, Institute for Technical and Macromolecular Chemistry, Worringerweg 2, 52074 Aachen, Germany
| | - Stefanie Voogt
- DWI - Leibniz Institute for Interactive Materials e.V., Forckenbeckstr. 50, 52056 Aachen, Germany and RWTH Aachen University, Institute for Technical and Macromolecular Chemistry, Worringerweg 2, 52074 Aachen, Germany and Zuyd University of Applied Sciences, Nieuw Eyckholt 300, Postbus 550, 6400 AN Heerlen, The Netherlands
| | - Ryan van Zandvoort
- The Netherlands Organisation for Applied Scientific Research (TNO), De Rondom 1, 5612 AP Eindhoven, The Netherlands.
| | - Helmut Keul
- DWI - Leibniz Institute for Interactive Materials e.V., Forckenbeckstr. 50, 52056 Aachen, Germany and RWTH Aachen University, Institute for Technical and Macromolecular Chemistry, Worringerweg 2, 52074 Aachen, Germany
| | - Martin Möller
- DWI - Leibniz Institute for Interactive Materials e.V., Forckenbeckstr. 50, 52056 Aachen, Germany and RWTH Aachen University, Institute for Technical and Macromolecular Chemistry, Worringerweg 2, 52074 Aachen, Germany
| | - Marcel Verheijen
- Philips Innovation Labs, High Tech Campus 11, 5656 AE Eindhoven, The Netherlands and Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Daniel Nascimento-Duplat
- Department of Imaging Physics, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
| | - Man Xu
- The Netherlands Organisation for Applied Scientific Research (TNO), De Rondom 1, 5612 AP Eindhoven, The Netherlands. and Department of Imaging Physics, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
| | - H Paul Urbach
- Department of Imaging Physics, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
| | - Aurèle J L Adam
- Department of Imaging Physics, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands
| | - Pascal Buskens
- DWI - Leibniz Institute for Interactive Materials e.V., Forckenbeckstr. 50, 52056 Aachen, Germany and RWTH Aachen University, Institute for Technical and Macromolecular Chemistry, Worringerweg 2, 52074 Aachen, Germany and Zuyd University of Applied Sciences, Nieuw Eyckholt 300, Postbus 550, 6400 AN Heerlen, The Netherlands and The Netherlands Organisation for Applied Scientific Research (TNO), De Rondom 1, 5612 AP Eindhoven, The Netherlands.
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Mitachi K, Aleiwi BA, Schneider CM, Siricilla S, Kurosu M. Stereocontrolled Total Synthesis of Muraymycin D1 Having a Dual Mode of Action against Mycobacterium tuberculosis. J Am Chem Soc 2016; 138:12975-12980. [PMID: 27617631 DOI: 10.1021/jacs.6b07395] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A stereocontrolled first total synthesis of muraymycin D1 (1) has been achieved. The synthetic route is highly stereoselective, featuring (1) selective β-ribosylation of the C2-methylated amino ribose, (2) selective Strecker reaction, and (3) ring-opening reaction of a diastereomeric mixture of a diaminolactone to synthesize muraymycidine (epi-capreomycidine). The acid-cleavable protecting groups for secondary alcohol and uridine ureido nitrogen are applied for simultaneous deprotections with the Boc and tBu groups. Muraymycin D1 (1) and its amide derivatives (2 and 3) exhibited growth inhibitory activity against Mycobacterium tuberculosis (MIC50 = 1.56-6.25 μg/mL) and strong enzyme inhibitory activities against the bacterial phosphotransferases (MurX and WecA) (IC50 = 0.096-0.69 μM).
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Affiliation(s)
- Katsuhiko Mitachi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center , 881 Madison Avenue, Memphis, Tennessee 38163, United States
| | - Bilal A Aleiwi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center , 881 Madison Avenue, Memphis, Tennessee 38163, United States
| | - Christopher M Schneider
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center , 881 Madison Avenue, Memphis, Tennessee 38163, United States
| | - Shajila Siricilla
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center , 881 Madison Avenue, Memphis, Tennessee 38163, United States
| | - Michio Kurosu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center , 881 Madison Avenue, Memphis, Tennessee 38163, United States
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Mitachi K, Mohan P, Siricilla S, Kurosu M. One-pot protection-glycosylation reactions for synthesis of lipid II analogues. Chemistry 2014; 20:4554-8. [PMID: 24623584 PMCID: PMC4030666 DOI: 10.1002/chem.201400307] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Indexed: 11/10/2022]
Abstract
(2,6-Dichloro-4-methoxyphenyl)(2,4-dichlorophenyl)methyl trichloroacetimidate (3) and its polymer-supported reagent 4 can be successfully applied to a one-pot protection-glycosylation reaction to form the disaccharide derivative 7 d for the synthesis of lipid II analogues. The temporary protecting group or linker at the C-6 position and N-Troc protecting group of 7 d can be cleaved simultaneously through a reductive condition. Overall yields of syntheses of lipid II (1) and neryl-lipid II N(ε)-dansylthiourea are significantly improved by using the described methods.
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Affiliation(s)
- Katsuhiko Mitachi
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163-0001 (USA)
| | - Priya Mohan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163-0001 (USA)
| | - Shajila Siricilla
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163-0001 (USA)
| | - Michio Kurosu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison Avenue, Memphis, TN 38163-0001 (USA)
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Banerjee D, Junge K, Beller M. A General Catalytic Hydroamidation of 1,3-Dienes: Atom-Efficient Synthesis ofN-Allyl Heterocycles, Amides, and Sulfonamides. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201308874] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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13
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Banerjee D, Junge K, Beller M. A General Catalytic Hydroamidation of 1,3-Dienes: Atom-Efficient Synthesis ofN-Allyl Heterocycles, Amides, and Sulfonamides. Angew Chem Int Ed Engl 2014; 53:1630-5. [DOI: 10.1002/anie.201308874] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Indexed: 11/10/2022]
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14
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Wang Y, Siricilla S, Aleiwi BA, Kurosu M. Improved synthesis of capuramycin and its analogues. Chemistry 2013; 19:13847-58. [PMID: 24014478 PMCID: PMC3929971 DOI: 10.1002/chem.201302389] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Indexed: 11/06/2022]
Abstract
Capuramycin and its congeners are considered to be important lead molecules for the development of a new drug for multidrug-resistant (MDR) Mycobacterium tuberculosis infections. Extensive structure-activity relationship studies of capuramycin to improve the efficacy have been limited because of difficulties in selectively chemically modifying the desired position(s) of the natural product with biologically interesting functional groups. We have developed efficient syntheses of capuramycin and its analogues by using new protecting groups, derived from the chiral (chloro-4-methoxyphenyl)(chlorophenyl)methanols, for the uridine ureido nitrogen and primary alcohol. The chiral nonracemic (2,6-dichloro-4-methoxyphenyl)(2,4-dichlorophenyl)methanol derivative is a useful reagent to resolve rac-3-amino-1,3-dihydro-5-phenyl-2H-1,4-benzodiazepin-2-one, the (S)-configuration isomer of which plays a significant role in improving the mycobactericidal activity of capuramycin.
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Affiliation(s)
| | | | | | - Michio Kurosu
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison, Memphis, TN 38163-0001 (USA), FAX: (+1) 901-448-6940
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Banerjee D, Jagadeesh RV, Junge K, Junge H, Beller M. Efficient and Convenient Palladium-Catalyzed Amination of Allylic Alcohols with N-Heterocycles. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206319] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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16
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Banerjee D, Jagadeesh RV, Junge K, Junge H, Beller M. Efficient and Convenient Palladium-Catalyzed Amination of Allylic Alcohols with N-Heterocycles. Angew Chem Int Ed Engl 2012; 51:11556-60. [DOI: 10.1002/anie.201206319] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Indexed: 11/10/2022]
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17
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Aleiwi BA, Kurosu M. A reliable Pd-mediated hydrogenolytic deprotection of BOM group of uridine ureido nitrogen. Tetrahedron Lett 2012; 53:3758-3762. [PMID: 22711944 PMCID: PMC3375701 DOI: 10.1016/j.tetlet.2012.05.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The benzyloxymethyl (BOM) group has been utilized widely in syntheses of a variety of natural and non-natural products. The BOM group is also one of few choices to protect uridine ureido nitrongen. However, hydrogenolytic cleavage of the BOM group of uridine derivatives has been unrealizably performed via heterogeneous conditions using Pd catalysts. One of the undesirable by-products formed by Pd-mediated hydrogenation conditions is the over-reduced product of which the C5-C6 double bond of the uracil moiety was saturated. To date, we have generated a wide range of uridine-containing antibacterial agents, where the BOM group has been utilized in their syntheses. In screening of deprotection conditions of the BOM group of uridine ureido nitrogen under Pd-mediated hydrogenation conditions, we realized that the addition of water to the (i)PrOH-based hydrogenation conditions can suppress the formation of over-reduced uridine derivatives and the addition of HCO(2)H (0.5%) dramatically improve the reaction rate. An optimized hydrogenation condition described here can be applicable to the BOM-deprotections of a wide range of uridine derivatives.
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Affiliation(s)
- Bilal A. Aleiwi
- Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison, Memphis, TN 38163, USA
| | - Michio Kurosu
- Pharmaceutical Sciences, College of Pharmacy, University of Tennessee Health Science Center, 881 Madison, Memphis, TN 38163, USA
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