1
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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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Okuyama Y, Kidena M, Kato E, Kawano S, Ishii K, Maie K, Miura K, Simizu S, Sato T, Chida N. Seven-Step Synthesis of All-Nitrogenated Sugar Derivatives Using Sequential Overman Rearrangements. Angew Chem Int Ed Engl 2021; 60:5193-5198. [PMID: 33252821 DOI: 10.1002/anie.202015141] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Indexed: 11/10/2022]
Abstract
All-nitrogenated sugars (ANSs), in which all hydroxy groups in a carbohydrate are replaced with amino groups, are anticipated to be privileged structures with useful biological activities. However, ANS synthesis has been challenging due to the difficulty in the installation of multi-amino groups. We report herein the development of a concise synthetic route to peracetylated ANSs in seven steps from commercially available monosaccharides. The key to success is the use of the sequential Overman rearrangement, which enables formal simultaneous substitution of four or five hydroxy groups in monosaccharides with amino groups. A variety of ANSs are available through the same reaction sequence starting from different initial monosaccharides by chirality transfer of secondary alcohols. Transformations of the resulting peracetylated ANSs such as glycosylation and deacetylation are also demonstrated. Biological studies reveal that ANS-modified cholesterol show cytotoxicity against human cancer cell lines, whereas each ANS and cholesterol have no cytotoxicity.
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Affiliation(s)
- Yuya Okuyama
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Mayu Kidena
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Erina Kato
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Sayaka Kawano
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Koki Ishii
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Kenta Maie
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Kazuki Miura
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Siro Simizu
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Takaaki Sato
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
| | - Noritaka Chida
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
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3
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Okuyama Y, Kidena M, Kato E, Kawano S, Ishii K, Maie K, Miura K, Simizu S, Sato T, Chida N. Seven‐Step Synthesis of All‐Nitrogenated Sugar Derivatives Using Sequential Overman Rearrangements. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yuya Okuyama
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Mayu Kidena
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Erina Kato
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Sayaka Kawano
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Koki Ishii
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Kenta Maie
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Kazuki Miura
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Siro Simizu
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Takaaki Sato
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
| | - Noritaka Chida
- Department of Applied Chemistry Faculty of Science and Technology Keio University 3-14-1, Hiyoshi, Kohoku-ku Yokohama 223-8522 Japan
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4
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Blériot Y. Contributing to the Study of Enzymatic and Chemical Glycosyl Transfer Through the Observation and Mimicry of Glycosyl Cations. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1706073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
AbstractThis account describes our efforts dedicated to: 1) the design of glycomimetics aimed at targeting therapeutically relevant carbohydrate processing enzymes, and 2) the observation, characterization, and exploitation of glycosyl cations as a tool for studying the glycosylation reaction. These findings have brought important data regarding this key ionic species as well as innovative strategies to access iminosugars of interest.1 Introduction2 The Glycosyl Cation, A Central Species in Glycosciences2.1 A Selection of the Strategies Developed so far to Gain Insights into Glycosyl Cations Structure2.2 When Superacids Meet Carbohydrates3 Chemical Probes to Gain Insights into the Pseudorotational Itinerary of Glycosides During Glycosidic Bond Hydrolysis3.1 Conformationally Locked Glycosides3.1.1 The Xylopyranose Case3.1.2 The Mannopyranose Case3.2 Conformationally Flexible Iminosugars3.2.1 Nojirimycin Ring Homologues3.2.2 Noeuromycin Ring Homologues3.2.3 Seven-Membered Iminosugar C-Glycosides4 N-Acetyl-d-glucosamine Mimics5 Ring Contraction: A Useful Tool to Increase Iminosugar’s Structural Diversity6 Regioselective Deprotection of Iminosugar C-Glycosides to Introduce Diversity at C2 Position7 Conclusion
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5
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Synthetic Route to Glycosyl β-1C-(phosphino)-phosphonates as Unprecedented Stable Glycosyl Diphosphate Analogs and Their Preliminary Biological Evaluation. Molecules 2020; 25:molecules25214969. [PMID: 33121078 PMCID: PMC7663146 DOI: 10.3390/molecules25214969] [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: 10/02/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 11/16/2022] Open
Abstract
The synthesis of glycosyl-β-1C-(phosphino)-phosphonates is a challenge since it has not yet been described. In this paper, we report an innovative synthetic method for their preparation from Glc-, Man-, and GlcNAc- lactone derivatives. The proposed original strategy involves the addition of the corresponding δ-hexonolactones onto the dianion of (methylphosphino) phosphonate as a key step, followed by dehydration and stereoselective addition of dihydrogen on the resulting double bond. Final deprotection provides the new glycosyl diphosphate analogs in 35%, 36%, and 10% yield over 6 steps from the corresponding δ-hexonolactones. The synthetized compounds were evaluated as inhibitors of phosphatase and diphosphatase activities and found to have complex concentration-dependent activatory and inhibitory properties on alkaline phosphatase. The synthetized tools should be useful to study other enzymes such as transferases.
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6
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Foucart Q, Shimadate Y, Marrot J, Kato A, Désiré J, Blériot Y. Synthesis and glycosidase inhibition of conformationally locked DNJ and DMJ derivatives exploiting a 2-oxo-C-allyl iminosugar. Org Biomol Chem 2019; 17:7204-7214. [DOI: 10.1039/c9ob01402k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The synthesis and glycosidase inhibition profile of a series of bicyclic analogs of DNJ and DMJ displaying a similar hydroxyl pattern and a distinct conformation is described.
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Affiliation(s)
- Quentin Foucart
- Université de Poitiers
- IC2MP
- UMR CNRS 7285
- Equipe “Synthèse Organique”
- Groupe Glycochimie
| | - Yuna Shimadate
- Department of Hospital Pharmacy
- University of Toyama
- Toyama 930-0194
- Japan
| | - Jérôme Marrot
- Institut Lavoisier de Versailles
- UMR-CNRS 8180
- Université de Versailles
- 78035 Versailles Cedex
- France
| | - Atsushi Kato
- Department of Hospital Pharmacy
- University of Toyama
- Toyama 930-0194
- Japan
| | - Jérôme Désiré
- Université de Poitiers
- IC2MP
- UMR CNRS 7285
- Equipe “Synthèse Organique”
- Groupe Glycochimie
| | - Yves Blériot
- Université de Poitiers
- IC2MP
- UMR CNRS 7285
- Equipe “Synthèse Organique”
- Groupe Glycochimie
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7
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Fontelle N, Yamamoto A, Arda A, Jiménez-Barbero J, Kato A, Désiré J, Blériot Y. 2-Acetamido-2-deoxy-l-iminosugarC-Alkyl andC-Aryl Glycosides: Synthesis and Glycosidase Inhibition. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800678] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Nathalie Fontelle
- IC2MP-UMR CNRS 7285; Université de Poitiers; Equipe “Synthèse Organique”; Université de Poitiers; 4 rue Michel Brunet 86073 Poitiers cedex 9 France
| | - Arisa Yamamoto
- Department of Hospital Pharmacy; University of Toyama; 2630 Sugitani 930-0194 Toyama Japan
| | - Ana Arda
- Parque Tecnológico de Bizkaia; CIC bioGUNE; Edif. 801A-1° 48160 Derio-Bizkaia Spain
| | | | - Atsushi Kato
- Department of Hospital Pharmacy; University of Toyama; 2630 Sugitani 930-0194 Toyama Japan
| | - Jérôme Désiré
- IC2MP-UMR CNRS 7285; Université de Poitiers; Equipe “Synthèse Organique”; Université de Poitiers; 4 rue Michel Brunet 86073 Poitiers cedex 9 France
| | - Yves Blériot
- IC2MP-UMR CNRS 7285; Université de Poitiers; Equipe “Synthèse Organique”; Université de Poitiers; 4 rue Michel Brunet 86073 Poitiers cedex 9 France
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8
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Harit VK, Ramesh NG. Amino-functionalized iminocyclitols: synthetic glycomimetics of medicinal interest. RSC Adv 2016. [DOI: 10.1039/c6ra23513a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A review on the syntheses and biological activities of unnatural glycomimetics highlighting the effect of replacement of hydroxyl groups of natural iminosugars by amino functionalities is presented.
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Affiliation(s)
- Vimal Kant Harit
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi - 110016
- India
| | - Namakkal G. Ramesh
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi - 110016
- India
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9
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Hu XG, Daryl Ariawan A, Hunter L. A d-ribose-derived α-amino nitrile as a versatile intermediate for the collective synthesis of piperidine-type iminosugar C-glycosides. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.11.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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10
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Blériot Y, Tran AT, Prencipe G, Jagadeesh Y, Auberger N, Zhu S, Gauthier C, Zhang Y, Désiré J, Adachi I, Kato A, Sollogoub M. Synthesis of 1,2-trans-2-Acetamido-2-deoxyhomoiminosugars. Org Lett 2014; 16:5516-9. [DOI: 10.1021/ol502929h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yves Blériot
- Glycochemistry
Group of “Organic Synthesis” Team, Université de Poitiers, UMR-CNRS
7285 IC2MP, Bât. B28, 4 rue Michel Brunet,
TSA 51106, 86073 Poitiers Cedex 9, France
| | - Anh Tuan Tran
- Sorbonne Universités,
UPMC Univ Paris 06, Institut Universitaire de France, UMR-CNRS 8232, IPCM, LabEx MiChem, F-75005 Paris, France
| | - Giuseppe Prencipe
- Sorbonne Universités,
UPMC Univ Paris 06, Institut Universitaire de France, UMR-CNRS 8232, IPCM, LabEx MiChem, F-75005 Paris, France
| | - Yerri Jagadeesh
- Glycochemistry
Group of “Organic Synthesis” Team, Université de Poitiers, UMR-CNRS
7285 IC2MP, Bât. B28, 4 rue Michel Brunet,
TSA 51106, 86073 Poitiers Cedex 9, France
| | - Nicolas Auberger
- Glycochemistry
Group of “Organic Synthesis” Team, Université de Poitiers, UMR-CNRS
7285 IC2MP, Bât. B28, 4 rue Michel Brunet,
TSA 51106, 86073 Poitiers Cedex 9, France
| | - Sha Zhu
- Sorbonne Universités,
UPMC Univ Paris 06, Institut Universitaire de France, UMR-CNRS 8232, IPCM, LabEx MiChem, F-75005 Paris, France
| | - Charles Gauthier
- Glycochemistry
Group of “Organic Synthesis” Team, Université de Poitiers, UMR-CNRS
7285 IC2MP, Bât. B28, 4 rue Michel Brunet,
TSA 51106, 86073 Poitiers Cedex 9, France
| | - Yongmin Zhang
- Sorbonne Universités,
UPMC Univ Paris 06, Institut Universitaire de France, UMR-CNRS 8232, IPCM, LabEx MiChem, F-75005 Paris, France
| | - Jérôme Désiré
- Glycochemistry
Group of “Organic Synthesis” Team, Université de Poitiers, UMR-CNRS
7285 IC2MP, Bât. B28, 4 rue Michel Brunet,
TSA 51106, 86073 Poitiers Cedex 9, France
| | - Isao Adachi
- Department
of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Atsushi Kato
- Department
of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - Matthieu Sollogoub
- Sorbonne Universités,
UPMC Univ Paris 06, Institut Universitaire de France, UMR-CNRS 8232, IPCM, LabEx MiChem, F-75005 Paris, France
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11
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Hsu CH, Schelwies M, Enck S, Huang LY, Huang SH, Chang YF, Cheng TJR, Cheng WC, Wong CH. Iminosugar C-glycoside analogues of α-D-GlcNAc-1-phosphate: synthesis and bacterial transglycosylase inhibition. J Org Chem 2014; 79:8629-37. [PMID: 25137529 PMCID: PMC4168788 DOI: 10.1021/jo501340s] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
![]()
We
herein describe the first synthesis of iminosugar C-glycosides
of α-d-GlcNAc-1-phosphate in 10 steps starting from
unprotected d-GlcNAc. A diastereoselective intramolecular
iodoamination–cyclization as the key step was employed to construct
the central piperidine ring of the iminosugar and the C-glycosidic
structure of α-d-GlcNAc. Finally, the iminosugar phosphonate
and its elongated phosphate analogue were accessed. These phosphorus-containing
iminosugars were coupled efficiently with lipophilic monophosphates
to give lipid-linked pyrophosphate derivatives, which are lipid II
mimetics endowed with potent inhibitory properties toward bacterial
transglycosylases (TGase).
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Affiliation(s)
- Che-Hsiung Hsu
- Genomics Research Center, Academica Sinica , Taipei 115, Taiwan
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12
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Gorantla JN, Lankalapalli RS. Synthesis of β-C-Galactosyl Ceramide and Its New Aza Variant via the Horner–Wadsworth–Emmons Reaction. J Org Chem 2014; 79:5193-200. [DOI: 10.1021/jo500769f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Jaggaiah N. Gorantla
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India
- Agroprocessing and
Natural Products Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, Kerala, India
| | - Ravi S. Lankalapalli
- Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India
- Agroprocessing and
Natural Products Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, Kerala, India
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13
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Ayers BJ, Fleet GWJ. One-Pot Tandem Strecker Reaction and Iminocyclisations: Syntheses of Trihydroxypiperidine α-Iminonitriles. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301705] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Sawant RC, Hung JT, Chuang HL, Lin HS, Chen WS, Yu AL, Luo SY. Synthesis of Hydroxylated Analogues of α-Galactosyl Ceramide (KRN7000) with Varying Stereochemistry. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301111] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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15
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Stubbs KA, Bacik JP, Perley-Robertson GE, Whitworth GE, Gloster TM, Vocadlo DJ, Mark BL. The development of selective inhibitors of NagZ: increased susceptibility of Gram-negative bacteria to β-lactams. Chembiochem 2013; 14:1973-81. [PMID: 24009110 PMCID: PMC3920638 DOI: 10.1002/cbic.201300395] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Indexed: 11/21/2022]
Abstract
The increasing incidence of inducible chromosomal AmpC β-lactamases within the clinic is a growing concern because these enzymes deactivate a broad range of even the most recently developed β-lactam antibiotics. As a result, new strategies are needed to block the action of this antibiotic resistance enzyme. Presented here is a strategy to combat the action of inducible AmpC by inhibiting the β-glucosaminidase NagZ, which is an enzyme involved in regulating the induction of AmpC expression. A divergent route facilitating the rapid synthesis of a series of N-acyl analogues of 2-acetamido-2-deoxynojirimycin is reported here. Among these compounds are potent NagZ inhibitors that are selective against functionally related human enzymes. These compounds reduce minimum inhibitory concentration values for β-lactams against a clinically relevant Gram-negative bacterium bearing inducible chromosomal AmpC β-lactamase, Pseudomonas aeruginosa. The structure of a NagZ–inhibitor complex provides insight into the molecular basis for inhibition by these compounds.
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Affiliation(s)
- Keith A Stubbs
- School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Crawley, WA 6009 (Australia).
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16
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Mondon M, Lecornué F, Guillard J, Nakagawa S, Kato A, Blériot Y. Skeletal rearrangement of seven-membered iminosugars: synthesis of (-)-adenophorine, (-)-1-epi-adenophorine and derivatives and evaluation as glycosidase inhibitors. Bioorg Med Chem 2013; 21:4803-12. [PMID: 23611766 DOI: 10.1016/j.bmc.2013.03.035] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 03/19/2013] [Accepted: 03/22/2013] [Indexed: 11/29/2022]
Abstract
The mirror image of natural product (+)-adenophorine along with its 1-epi-, 1-homo-analogs and other derivatives have been synthesized and evaluated as glycosidase inhibitors. The synthetic strategy is based on the skeletal rearrangement of tetrahydroxylated C-alkyl azepanes obtained via a Staudinger/azaWittig/alkylation sequence starting from a sugar-derived azidolactol. Several organometallic species have been investigated for the alkylation step including organomagnesium, organolithium, organozinc, organoaluminum and organocerium reagents. While diallylzinc proved to be the most efficient to introduce an allyl substituent, disappointing results were obtained with the other organometallic species leading either to lower yields or no reaction. Enzymatic assays indicate that (-)-adenophorine is a moderate α-l-fucosidase inhibitor.
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Affiliation(s)
- Martine Mondon
- Université de Poitiers, Equipe Synthèse Organique, Groupe Glycochimie, UMR-CNRS 7285, IC2MP, 4 rue Michel Brunet, 86022 Poitiers, France
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17
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Villa S, Masciocchi D, Gelain A, Meneghetti F. The Influence of the Substitution Pattern on the Molecular Conformation of Ureido-1,2,5-oxadiazoles, Related to STAT3 Inhibitors: Chemical Behavior and Structural Investigation. Chem Biodivers 2012; 9:1240-53. [DOI: 10.1002/cbdv.201100339] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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18
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Vu CS, Guisot N, Guillarme S, Martel A, Dujardin G, Pipelier M, Dubreuil D, Saluzzo C. A Convergent Hetero-Diels-Alder Strategy for Asymmetric Access to a Lactone Containing Two Lipidic Chains. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200513] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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19
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Yamaguchi T, Blázquez B, Hesek D, Lee M, Llarrull LI, Boggess B, Oliver AG, Fisher JF, Mobashery S. Inhibitors for Bacterial Cell-Wall Recycling. ACS Med Chem Lett 2012; 3:238-242. [PMID: 22844551 PMCID: PMC3404464 DOI: 10.1021/ml2002746] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2011] [Accepted: 01/19/2012] [Indexed: 11/28/2022] Open
Abstract
Gram-negative bacteria have evolved an elaborate process for the recycling of their cell wall, which is initiated in the periplasmic space by the action of lytic transglycosylases. The product of this reaction, β-D-N-acetylglucosamine-(1→4)-1,6-anhydro-β-D-N-acetylmuramyl-L-Ala-γ-D-Glu-meso-DAP-D-Ala-D-Ala (compound 1), is internalized to begin the recycling events within the cytoplasm. The first step in the cytoplasmic recycling is catalyzed by the NagZ glycosylase, which cleaves in a hydrolytic reaction the N-acetylglucosamine glycosidic bond of metabolite 1. The reactions catalyzed by both the lytic glycosylases and NagZ are believed to involve oxocarbenium transition species. We describe herein the synthesis and evaluation of four iminosaccharides as possible mimetics of the oxocarbenium species, and disclose one as a potent (compound 3, K(i) = 300 ± 15 nM) competitive inhibitor of NagZ.
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Affiliation(s)
- Takao Yamaguchi
- Department
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556,
United States
| | - Blas Blázquez
- Department
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556,
United States
| | - Dusan Hesek
- Department
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556,
United States
| | - Mijoon Lee
- Department
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556,
United States
| | - Leticia I. Llarrull
- Department
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556,
United States
| | - Bill Boggess
- Department
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556,
United States
| | - Allen G. Oliver
- Department
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556,
United States
| | - Jed F. Fisher
- Department
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556,
United States
| | - Shahriar Mobashery
- Department
Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556,
United States
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20
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Mondon M, Fontelle N, Désiré J, Lecornué F, Guillard J, Marrot J, Blériot Y. Access to l- and d-Iminosugar C-Glycosides from a d-gluco-Derived 6-Azidolactol Exploiting a Ring Isomerization/Alkylation Strategy. Org Lett 2012; 14:870-3. [DOI: 10.1021/ol203385w] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Martine Mondon
- Institut de Chimie des Milieux et des Matériaux de Poitiers (IC2MP), UMR CNRS 7285, Université de Poitiers, Equipe “Chimie Organique, Bioorganique et Supramoléculaire” 4 avenue Michel Brunet, 86022 Poitiers cedex, France, and Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles, 45 avenue des Etats-Unis, 78035 Versailles cedex, France
| | - Nathalie Fontelle
- Institut de Chimie des Milieux et des Matériaux de Poitiers (IC2MP), UMR CNRS 7285, Université de Poitiers, Equipe “Chimie Organique, Bioorganique et Supramoléculaire” 4 avenue Michel Brunet, 86022 Poitiers cedex, France, and Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles, 45 avenue des Etats-Unis, 78035 Versailles cedex, France
| | - Jérôme Désiré
- Institut de Chimie des Milieux et des Matériaux de Poitiers (IC2MP), UMR CNRS 7285, Université de Poitiers, Equipe “Chimie Organique, Bioorganique et Supramoléculaire” 4 avenue Michel Brunet, 86022 Poitiers cedex, France, and Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles, 45 avenue des Etats-Unis, 78035 Versailles cedex, France
| | - Frédéric Lecornué
- Institut de Chimie des Milieux et des Matériaux de Poitiers (IC2MP), UMR CNRS 7285, Université de Poitiers, Equipe “Chimie Organique, Bioorganique et Supramoléculaire” 4 avenue Michel Brunet, 86022 Poitiers cedex, France, and Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles, 45 avenue des Etats-Unis, 78035 Versailles cedex, France
| | - Jérôme Guillard
- Institut de Chimie des Milieux et des Matériaux de Poitiers (IC2MP), UMR CNRS 7285, Université de Poitiers, Equipe “Chimie Organique, Bioorganique et Supramoléculaire” 4 avenue Michel Brunet, 86022 Poitiers cedex, France, and Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles, 45 avenue des Etats-Unis, 78035 Versailles cedex, France
| | - Jérôme Marrot
- Institut de Chimie des Milieux et des Matériaux de Poitiers (IC2MP), UMR CNRS 7285, Université de Poitiers, Equipe “Chimie Organique, Bioorganique et Supramoléculaire” 4 avenue Michel Brunet, 86022 Poitiers cedex, France, and Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles, 45 avenue des Etats-Unis, 78035 Versailles cedex, France
| | - Yves Blériot
- Institut de Chimie des Milieux et des Matériaux de Poitiers (IC2MP), UMR CNRS 7285, Université de Poitiers, Equipe “Chimie Organique, Bioorganique et Supramoléculaire” 4 avenue Michel Brunet, 86022 Poitiers cedex, France, and Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles, 45 avenue des Etats-Unis, 78035 Versailles cedex, France
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21
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22
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He Y, Bubb AK, Stubbs KA, Gloster TM, Davies GJ. Inhibition of a bacterial O-GlcNAcase homologue by lactone and lactam derivatives: structural, kinetic and thermodynamic analyses. Amino Acids 2010; 40:829-39. [PMID: 20689974 DOI: 10.1007/s00726-010-0700-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Accepted: 07/13/2010] [Indexed: 11/26/2022]
Abstract
The dynamic, intracellular, O-GlcNAc modification is of continuing interest and one whose study through targeted "chemical genetics" approaches is set to increase. Of particular importance is the inhibition of the O-GlcNAc hydrolase, O-GlcNAcase (OGA), since this provides a route to elevate cellular O-GlcNAc levels, and subsequent phenotypic evaluation. Such a small molecule approach complements other methods and potentially avoids changes in protein-protein interactions that manifest themselves in molecular biological approaches to O-GlcNAc transferase knockout or over-expression. Here we describe the kinetic, thermodynamic and three-dimensional structural analysis of a bacterial OGA analogue from Bacteroides thetaiotaomicron, BtGH84, in complex with a lactone oxime (LOGNAc) and a lactam form of N-acetylglucosamine and compare their binding signatures with that of the more potent inhibitor O-(2-acetamido-2-deoxy-D-glucopyranosylidene)amino N-phenyl carbamate (PUGNAc). We show that both LOGNAc and the N-acetyl gluconolactam are significantly poorer inhibitors than PUGNAc, which may reflect poorer mimicry of transition state geometry and steric clashes with the enzyme upon binding; drawbacks that the phenyl carbamate adornment of PUGNAc helps mitigate. Implications for the design of future generations of inhibitors are discussed.
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Affiliation(s)
- Yuan He
- York Structural Biology Laboratory, Department of Chemistry, The University of York, York, UK
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23
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Ho CW, Popat SD, Liu TW, Tsai KC, Ho MJ, Chen WH, Yang AS, Lin CH. Development of GlcNAc-inspired iminocyclitiols as potent and selective N-acetyl-beta-hexosaminidase inhibitors. ACS Chem Biol 2010; 5:489-97. [PMID: 20187655 DOI: 10.1021/cb100011u] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Human N-acetyl-beta-hexosaminidase (Hex) isozymes are considered to be important targets for drug discovery. They are directly linked to osteoarthritis because Hex is the predominant glycosidase released by chondrocytes to degrade glycosaminoglycan. Hex is also associated with lysosomal storage disorders. We report the discovery of GlcNAc-type iminocyclitiols as potent and selective Hex inhibitors, likely contributed by the gain of extra electrostatic and hydrophobic interactions. The most potent inhibitor had a K(i) of 0.69 nM against human Hex B and was 2.5 x 10(5) times more selective for Hex B than for a similar human enzyme O-GlcNAcase. These glycosidase inhibitors were shown to modulate intracellular levels of glycolipids, including ganglioside-GM2 and asialoganglioside-GM2.
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Affiliation(s)
- Ching-Wen Ho
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
- Chemical Biology and Molecular Biophysics, Taiwan International Graduate Program, Academia Sinica, Taipei, Taiwan
- Department of Chemistry, National Tsing-Hua University, Hsin-Chu, Taiwan
| | - Shinde D. Popat
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Ta-Wei Liu
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Keng-Chang Tsai
- The Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Meng-Jung Ho
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
- Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
| | - Wei-Hung Chen
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - An-Suei Yang
- Chemical Biology and Molecular Biophysics, Taiwan International Graduate Program, Academia Sinica, Taipei, Taiwan
- The Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Chun-Hung Lin
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
- Chemical Biology and Molecular Biophysics, Taiwan International Graduate Program, Academia Sinica, Taipei, Taiwan
- The Genomics Research Center, Academia Sinica, Taipei, Taiwan
- Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
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24
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Huang PQ, Chen W, Zheng X, Ruan YP. Facile Syntheses of Three Ahp-Type Building Blocks with Complementary Reactivity. HETEROCYCLES 2009. [DOI: 10.3987/com-08-s(d)35] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Budzowski A, Pitak M, Stadnicka K. Synthesis of Polycyclic Monothioimides via a Domino Reaction of β-Aminocycloalkenethioamides. MONATSHEFTE FUR CHEMIE 2007. [DOI: 10.1007/s00706-007-0654-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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27
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M. Brummond K, Mitasev B, Yan B. Cycloaddition Reactions of Amino-Acid Derived Cross-Conjugated Trienes: Stereoselective Synthesis of Novel Heterocyclic Scaffolds. HETEROCYCLES 2006. [DOI: 10.3987/com-06-s(w)36] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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28
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Mohal N, Bernet B, Vasella A. Synthesis of a Fusion-Isomeric Cellobionoimidazole and Its Evaluation against thesyn-Protonating Glycosidase Cel7A. Helv Chim Acta 2005. [DOI: 10.1002/hlca.200590260] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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29
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Vocadlo DJ, Withers SG. Detailed Comparative Analysis of the Catalytic Mechanisms of β-N-Acetylglucosaminidases from Families 3 and 20 of Glycoside Hydrolases. Biochemistry 2005; 44:12809-18. [PMID: 16171396 DOI: 10.1021/bi051121k] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Beta-N-acetylglucosaminidases are commonly occurring enzymes involved in the degradation of polysaccharides and glycoconjugates containing N-acetylglucosamine residues. Such enzymes have been classified into glycoside hydrolase families 3 and 20 and are believed to follow distinct chemical mechanisms. Family 3 enzymes are thought to follow a standard retaining mechanism involving a covalent glycosyl enzyme intermediate while family 20 enzymes carry out a substrate-assisted mechanism involving the transient formation of an enzyme-sequestered oxazoline or oxazolinium ion intermediate. Detailed mechanistic analysis of representatives of these two families provides support for these mechanisms as well as detailed insights into transition state structure. Alpha-secondary deuterium kinetic isotope effects of kH/kD = 1.07 and 1.10 for Streptomyces plicatus beta-hexosaminidase (SpHex) and Vibrio furnisii beta-N-acetylglucosaminidase (ExoII) respectively indicate transition states with oxocarbenium ion character in each case. Brønsted plots for hydrolysis of a series of aryl hexosaminides are quite different in the two cases. For SpHex a large degree of proton donation is suggested by the relatively low value of beta(lg) (-0.29) on kcat/Km, compared with a beta(lg) of -0.79 for ExoII. Most significantly the Taft plots derived from kinetic parameters for a series of p-nitrophenyl N-acyl glucosaminides bearing differing levels of fluorine substitution in the N-acyl group are completely different. A very strong dependence (slope = -1.29) is seen for SpHex, indicating direct nucleophilic participation by the acetamide, while essentially no dependence (0.07) is seen for ExoII, suggesting that the acetamide plays purely a binding role. Taken together these data provide unprecedented insight into enzymatic glycosyl transfer mechanisms wherein the structures of both the nucleophile and the leaving group are systematically varied.
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Affiliation(s)
- David J Vocadlo
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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30
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Sawada D, Takahashi H, Shiro M, Ikegami S. Synthesis of N-protected azaoligosaccharides and their cyclic derivatives. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.02.057] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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31
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Terinek M, Vasella A. Synthesis and evaluation of two mannosamine-derived lactone-type inhibitors of snail β-mannosidase. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2004.11.068] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Stolz F, Reiner M, Blume A, Reutter W, Schmidt RR. Novel UDP-glycal derivatives as transition state analogue inhibitors of UDP-GlcNAc 2-epimerase. J Org Chem 2004; 69:665-79. [PMID: 14750790 DOI: 10.1021/jo0353029] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The "epimerisation" of UDP-GlcNAc to ManNAc, the first step in the biosynthesis of sialic acids, is catalyzed by UDP-GlcNAc 2-epimerase. In this paper we report the synthesis of transition state based inhibitors of this enzyme. To mimic the assumed first transition state of this reaction (TS 1), we designed and synthesized the novel UDP-exo-glycal derivatives 1-4. We also report herein the synthesis of 5 and 6, the first C-glycosidic derivatives of 2-acetamidoglucal, and the synthesis of the ketosides 7 and 8, which were designed as bis-substrate analogue and bis- product analogue, respectively, to mimic the second step of the reaction via the assumed second transition state TS 2.
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Affiliation(s)
- Florian Stolz
- Fachbereich Chemie, Universität Konstanz, Fach M725, D-78457 Konstanz, Germany
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33
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van den Berg RJBHN, Donker-Koopman W, van Boom JH, Aerts HMFG, Noort D. Design and synthesis of 2-acetamidomethyl derivatives of isofagomine as potential inhibitors of human lysosomal β-hexosaminidases. Bioorg Med Chem 2004; 12:891-902. [PMID: 14980601 DOI: 10.1016/j.bmc.2003.12.040] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2003] [Accepted: 12/22/2003] [Indexed: 10/26/2022]
Abstract
As part of a program towards the development of specific inhibitors of human lysosomal beta-hexosaminidase for use as chemical chaperones in therapy of G(M2) gangliosidosis related diseases, the synthesis of 2-acetamidomethyl derivatives of isofagomine has been undertaken. Key event in this synthesis is the conversion of a C-2 substituted gluconolactone derivative into the corresponding lactam, followed by reduction to the corresponding amine. The 1-N-imino-2 acetamidomethyl derivative 5 proved to be a rather selective inhibitor with a K(i) of 2.4 microM for homogenate of human spleen lysosomal beta-hexosaminidase.
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Affiliation(s)
- Richard J B H N van den Berg
- Leiden Institute of Chemistry, Gorlaeus Laboratories, University of Leiden, PO Box 9502, Leiden NL-2300 RA, The Netherlands
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34
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Devel L, Hamon L, Becker H, Thellend A, Vidal-Cros A. Synthesis of protected 2-amino-2-deoxy-D-xylothionolactam derivatives and some aspects of their reactivity. Carbohydr Res 2003; 338:1591-601. [PMID: 12860430 DOI: 10.1016/s0008-6215(03)00239-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The synthesis of polyfunctionalized delta-lactams as key intermediates of glycomimetics in the 2-acetamido-2-deoxy sugar series is presented. Starting from a chiral gamma-amino vinylic ester synthesized from Garner's aldehyde and after regioselective reduction, 1-azido-3-(N-tert-butyloxycarbonyl-2,2-dimethyloxazolidin-4-yl)-2-propene was obtained. Next, a cis-dihydroxylation reaction provided the protected D-xylitol and L-arabinitol azides. A simple protection-deprotection sequence, followed by an oxidation and a reductive cyclization, led to protected 2-amino-delta-lactams bearing a tert-butyloxycarbonyl group on the amine functionality. To explore the reactivity of such compounds, activation of the lactam into the corresponding thionolactam was performed. The resulting 2-amino-D-xylothionolactam derivative, a versatile intermediate, allowed access to a first generation of protected 2-amino-D-xylosamidoxime derivatives which are of interest as precursors of N-acetylhexosaminidase and N-acetylglucosaminyltransferase inhibitors. In this series of compounds, epimerization at C-2 was observed. AM(1) calculations performed on these analogs showed that they adopted a B(2,5) conformation and that the axial epimer was favored in the protected series whereas the equatorial epimer was preferred in the unprotected series.
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Affiliation(s)
- Laurent Devel
- Structure et Fonction de Molécules Bioactives, Université Pierre et Marie Curie, Tour 44-45, 3ème étage, 4 place Jussieu, F-75252 Paris, France
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35
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van den Berg RJBHN, Noort D, Milder-Enacache ES, van der Marel GA, van Boom JH, Benschop HP. Approach Toward a Generic Treatment of Gram-Negative Infections: Synthesis of Haptens for Catalytic Antibody Mediated Cleavage of the Interglycosidic Bond in Lipid A. European J Org Chem 1999. [DOI: 10.1002/(sici)1099-0690(199910)1999:10<2593::aid-ejoc2593>3.0.co;2-c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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36
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Pandit UK, Overkleeft HS, Borer BC, Bieräugel H. Synthesis Mediated by Ring-Closing Metathesis – Applications in the Synthesis of Azasugars and Alkaloids. European J Org Chem 1999. [DOI: 10.1002/(sici)1099-0690(199905)1999:5<959::aid-ejoc959>3.0.co;2-k] [Citation(s) in RCA: 80] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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37
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Pasquarello C, Demange R, Vogel P. Synthesis of alpha-C(1-->3)-mannopyranoside of N-acetylgalactosamine, a new beta-galactosidase inhibitor. Bioorg Med Chem Lett 1999; 9:793-6. [PMID: 10201849 DOI: 10.1016/s0960-894x(99)00064-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Radical C-glycosidation of a 3-methylidene-7-oxabicyclo[2.2.1]heptan-2-one derivative with acetobromomannose gave a alpha-C-mannopyranoside that was converted into alpha-D-ManpCH2(1-->3)-D-GalNAc, a C-disaccharide that inhibits beta-galactosidase from jack bean with IC50 = 9.4 microM and Ki = 7.5 microM (mixed mode of inhibition).
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Affiliation(s)
- C Pasquarello
- Institut de chimie organique de l'Université de Lausanne, BCH, Lausanne-Dorigny, Switzerland
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