1
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Kato A, Nakagome I, Yoshimura K, Kanekiyo U, Kishida M, Shinzawa K, Lu TT, Li YX, Nash RJ, Fleet GWJ, Tanaka N, Yu CY. Introduction of C-alkyl branches to L-iminosugars changes their active site binding orientation. Org Biomol Chem 2022; 20:7250-7260. [PMID: 35838176 DOI: 10.1039/d2ob01099b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
L-ido-Deoxynojirimycin (L-ido-DNJ) itself showed no affinity for human lysosomal acid α-glucosidase (GAA), whereas 5-C-methyl-L-ido-DNJ showed a strong affinity for GAA, comparable to the glucose analog DNJ, with a Ki value of 0.060 μM. This excellent affinity for GAA and enzyme stabilization was observed only when methyl and ethyl groups were introduced. Docking simulation analysis revealed that the alkyl chains of 5-C-alkyl-L-ido-DNJs were stored in three different pockets, depending on their length, thereby the molecular orientation was changed. Comparison of the binding poses of DNJ and 5-C-methyl-L-ido-DNJ showed that they formed a common ionic interaction with Asp404, Asp518, and Asp616, but both the binding orientation and the distance between the ligand and each amino acid residue were different. 5-C-Methyl-L-ido-DNJ dose-dependently increased intracellular GAA activity in Pompe patient fibroblasts with the M519V mutation and also promoted enzyme transport to lysosomes. This study provides the first example of a strategy to design high-affinity ligands by introducing alkyl branches into rare sugars and L-sugar-type iminosugars to change the orientation of binding.
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Affiliation(s)
- Atsushi Kato
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
| | - Izumi Nakagome
- School of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Kosuke Yoshimura
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
| | - Uta Kanekiyo
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
| | - Mana Kishida
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
| | - Kenta Shinzawa
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan.
| | - Tian-Tian Lu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yi-Xian Li
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Robert J Nash
- Institute of Biological, Environmental and Rural Sciences/Phytoquest Limited, Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EB, UK
| | - George W J Fleet
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, OX1 3TA, UK
| | - Nobutada Tanaka
- School of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Chu-Yi Yu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. .,University of Chinese Academy of Sciences, Beijing 100049, China
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2
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Lindbäck E, Sydnes MO, Haarr MB, Lopéz Ó, Fernández-Bolaños JG. Functionalized d- and l-Arabino-Pyrrolidines as Potent and Selective Glycosidase Inhibitors. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1764-8950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractThe efficient synthesis of enantiomeric pairs of iminosugars including 1,4-dideoxy-1,4-imino-d-arabinitol (DAB) and 1,4-dideoxy-1,4-imino-l-arabinitol (LAB) analogues with an amidine, hydrazide, hydrazide imide, or amide oxime moiety is described. The preparation of DAB and LAB analogues commenced from l-xylose and d-xylose, respectively. The obtained iminosugars are tested against a panel of glycosidases with pharmaceutical relevance, revealing enhanced activity for the DAB analogues in comparison with the LAB analogues. In particular, the d-arabino-configured amidine behaved as a potent (submicromolar range) and selective inhibitor of α-mannosidase.
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Affiliation(s)
- Emil Lindbäck
- Faculty of Science and Technology, Department of Chemistry, Bioscience, and Environmental Engineering, University of Stavanger
| | - Magne O. Sydnes
- Faculty of Science and Technology, Department of Chemistry, Bioscience, and Environmental Engineering, University of Stavanger
| | - Marianne B. Haarr
- Faculty of Science and Technology, Department of Chemistry, Bioscience, and Environmental Engineering, University of Stavanger
| | - Óscar Lopéz
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla
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3
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Dhara D, Dhara A, Bennett J, Murphy PV. Cyclisations and Strategies for Stereoselective Synthesis of Piperidine Iminosugars. CHEM REC 2021; 21:2958-2979. [PMID: 34713557 DOI: 10.1002/tcr.202100221] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/07/2021] [Accepted: 10/11/2021] [Indexed: 12/31/2022]
Abstract
This personal account focuses on synthesis of polyhydroxylated piperidines, a subset of compounds within the iminosugar family. Cyclisations to form the piperidine ring include reductive amination, substitution via amines, iminium ions and cyclic nitrones, transamidification (N-acyl transfer), addition to alkenes, ring contraction and expansion, photoinduced electron transfer, multicomponent Ugi reaction and ring closing metathesis. Enantiomerically pure piperidines are obtained from chiral pool precursors (e. g. sugars, amino acids, Garner's aldehyde) or asymmetric reactions (e. g. epoxidation, dihydroxylation, aminohydroxylation, aldol, biotransformation). Our laboratory have contributed cascades based on reductive amination from glycosyl azide precursors as well as Huisgen azide-alkene cycloaddition. The latter's combination with allylic azide rearrangement has given substituted piperidines, including those with quaternary centres adjacent to nitrogen.
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Affiliation(s)
- Debashis Dhara
- School of Biological and Chemical Sciences, NUI Galway, University Road, Galway, H91 TK33, Ireland.,Unité de Chimie des Biomolécules, UMR 3523 CNRS, Institut Pasteur, Université de Paris, 28 rue du Dr Roux, 75015, Paris, France
| | - Ashis Dhara
- School of Biological and Chemical Sciences, NUI Galway, University Road, Galway, H91 TK33, Ireland
| | - Jack Bennett
- School of Biological and Chemical Sciences, NUI Galway, University Road, Galway, H91 TK33, Ireland
| | - Paul V Murphy
- School of Biological and Chemical Sciences, NUI Galway, University Road, Galway, H91 TK33, Ireland.,SSPC - The Science Foundation Ireland Research Centre for Pharmaceuticals, NUI Galway, University Road, Galway, H91 TK33, Ireland
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4
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Strategy for designing selective α-l-rhamnosidase inhibitors: Synthesis and biological evaluation of l-DMDP cyclic isothioureas. Bioorg Med Chem 2017; 25:107-115. [DOI: 10.1016/j.bmc.2016.10.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 10/11/2016] [Accepted: 10/12/2016] [Indexed: 11/17/2022]
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5
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Abstract
This review of simple indolizidine and quinolizidine alkaloids (i.e., those in which the parent bicyclic systems are in general not embedded in polycyclic arrays) is an update of the previous coverage in Volume 55 of this series (2001). The present survey covers the literature from mid-1999 to the end of 2013; and in addition to aspects of the isolation, characterization, and biological activity of the alkaloids, much emphasis is placed on their total synthesis. A brief introduction to the topic is followed by an overview of relevant alkaloids from fungal and microbial sources, among them slaframine, cyclizidine, Steptomyces metabolites, and the pantocins. The important iminosugar alkaloids lentiginosine, steviamine, swainsonine, castanospermine, and related hydroxyindolizidines are dealt with in the subsequent section. The fourth and fifth sections cover metabolites from terrestrial plants. Pertinent plant alkaloids bearing alkyl, functionalized alkyl or alkenyl substituents include dendroprimine, anibamine, simple alkaloids belonging to the genera Prosopis, Elaeocarpus, Lycopodium, and Poranthera, and bicyclic alkaloids of the lupin family. Plant alkaloids bearing aryl or heteroaryl substituents include ipalbidine and analogs, secophenanthroindolizidine and secophenanthroquinolizidine alkaloids (among them septicine, julandine, and analogs), ficuseptine, lasubines, and other simple quinolizidines of the Lythraceae, the simple furyl-substituted Nuphar alkaloids, and a mixed quinolizidine-quinazoline alkaloid. The penultimate section of the review deals with the sizable group of simple indolizidine and quinolizidine alkaloids isolated from, or detected in, ants, mites, and terrestrial amphibians, and includes an overview of the "dietary hypothesis" for the origin of the amphibian metabolites. The final section surveys relevant alkaloids from marine sources, and includes clathryimines and analogs, stellettamides, the clavepictines and pictamine, and bis(quinolizidine) alkaloids.
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6
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Glawar AFG, Jenkinson SF, Newberry SJ, Thompson AL, Nakagawa S, Yoshihara A, Akimitsu K, Izumori K, Butters TD, Kato A, Fleet GWJ. An approach to 8 stereoisomers of homonojirimycin from (D)-glucose via kinetic & thermodynamic azido-γ-lactones. Org Biomol Chem 2014; 11:6886-99. [PMID: 23963282 DOI: 10.1039/c3ob41334a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Crystal structures were obtained for the two C2 epimeric azido-γ-lactones 2-azido-2-deoxy-3,5:6,7-di-O-isopropylidene-d-glycero-d-ido-heptono-1,4-lactone and 2-azido-2-deoxy-3,5:6,7-di-O-isopropylidene-d-glycero-d-gulo-heptono-1,4-lactone prepared from kinetic and thermodynamic azide displacements of a triflate derived from d-glucoheptonolactone. Azido-γ-lactones are very useful intermediates in the synthesis of iminosugars and polyhydroxylated amino acids. In this study two epimeric azido-heptitols allow biotechnological transformations via Izumoring techniques to 8 of the 16 possible homonojirimycin analogues, 5 of which were isolated pure because of the lack of stereoselectivity of the final reductive amination. A side-by-side glycosidase inhibition profile of 11 of the possible 16 HNJ stereoisomers derived from d-glucose and d-mannose is presented.
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Affiliation(s)
- Andreas F G Glawar
- Oxford Glycobiology Institute, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
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7
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Ayers BJ, Hollinshead J, Saville AW, Nakagawa S, Adachi I, Kato A, Izumori K, Bartholomew B, Fleet GWJ, Nash RJ. Iteamine, the first alkaloid isolated from Itea virginica L. inflorescence. PHYTOCHEMISTRY 2014; 100:126-131. [PMID: 24534106 DOI: 10.1016/j.phytochem.2014.01.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 01/16/2014] [Accepted: 01/22/2014] [Indexed: 06/03/2023]
Abstract
Iteamine, o-aminobenzyl β-D-glucopyranoside, is the first alkaloid to be isolated from Itea virginica. Itea is the sole plant source of D-psicose, a rare sugar likely to be a major dietary supplement. The structure of iteamine was established by NMR and confirmed by total synthesis. Iteamine and its galacto-analog (which was not found in Itea plants) showed no strong inhibition of any of the 15 glycosidases tested; unnatural galacto-iteamine was a weak inhibitor of chicken liver α-N-acetylgalactosaminidase.
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Affiliation(s)
- Benjamin J Ayers
- Chemistry Research Laboratory, University of Oxford, Oxford OX1 3TA, UK.
| | | | | | - Shinpei Nakagawa
- Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan
| | - 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
| | - Ken Izumori
- Rare Sugar Research Center, Kagawa University, 2393 Ikenobe, Miki-cho, Kita-gun, Kagawa 761-07, Japan
| | - Barbara Bartholomew
- Phytoquest Limited, IBERS, Plas Gogerddan, Ceredigion, Aberystwyth SY23 3EB, Wales, UK
| | - George W J Fleet
- Chemistry Research Laboratory, University of Oxford, Oxford OX1 3TA, UK
| | - Robert J Nash
- Phytoquest Limited, IBERS, Plas Gogerddan, Ceredigion, Aberystwyth SY23 3EB, Wales, UK.
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8
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Crabtree EV, Martínez RF, Nakagawa S, Adachi I, Butters TD, Kato A, Fleet GWJ, Glawar AFG. Synthesis of the enantiomers of XYLNAc and LYXNAc: comparison of β-N-acetylhexosaminidase inhibition by the 8 stereoisomers of 2-N-acetylamino-1,2,4-trideoxy-1,4-iminopentitols. Org Biomol Chem 2014; 12:3932-43. [DOI: 10.1039/c4ob00097h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Jenkinson SF, Best D, Saville AW, Mui J, Martínez RF, Nakagawa S, Kunimatsu T, Alonzi DS, Butters TD, Norez C, Becq F, Blériot Y, Wilson FX, Weymouth-Wilson AC, Kato A, Fleet GWJ. C-branched iminosugars: α-glucosidase inhibition by enantiomers of isoDMDP, isoDGDP, and isoDAB-L-isoDMDP compared to miglitol and miglustat. J Org Chem 2013; 78:7380-97. [PMID: 23688199 DOI: 10.1021/jo4005487] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The Ho crossed aldol condensation provides access to a series of carbon branched iminosugars as exemplified by the synthesis of enantiomeric pairs of isoDMDP, isoDGDP, and isoDAB, allowing comparison of their biological activities with three linear isomeric natural products DMDP, DGDP, and DAB and their enantiomers. L-IsoDMDP [(2S,3S,4R)-2,4-bis(hydroxymethyl)pyrrolidine-3,4-diol], prepared in 11 steps in an overall yield of 45% from d-lyxonolactone, is a potent specific competitive inhibitor of gut disaccharidases [K(i) 0.081 μM for rat intestinal maltase] and is more effective in the suppression of hyperglycaemia in a maltose loading test than miglitol, a drug presently used in the treatment of late onset diabetes. The partial rescue of the defective F508del-CFTR function in CF-KM4 cells by L-isoDMDP is compared with miglustat and isoLAB in an approach to the treatment of cystic fibrosis.
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Affiliation(s)
- Sarah F Jenkinson
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, UK
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10
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Schitter G, Wrodnigg TM. Update on carbohydrate-containing antibacterial agents. Expert Opin Drug Discov 2013; 4:315-56. [PMID: 23489128 DOI: 10.1517/17460440902778725] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Since the first known use of antibiotics > 2,500 years ago, a research field with immense importance for the welfare of mankind has been developed. After a decrease in interest in this topic by the end of the 20th century the occurrence of (poly-)resistant strains of bacteria induced a revival of antibiotics research. Health systems have been seeking viable and reliable solutions to this dangerous and expansive threat. OBJECTIVE This review will focus on carbohydrate-containing antibiotics and will give an outline of recently published novel isolated, semisynthetic as well as synthetic structures, their mechanism of action, if known, and the strategies for the design of compounds with potential by improved antibacterial properties. METHODS The literature between 2000 and 2008 was screened with main focus on recent examples of novel structures and strategies for the lead finding of exclusively antibacterial agents. RESULTS/CONCLUSION With the explanation of the role of the carbohydrate moieties in the respective antibacterial agents together with better synthetic strategies in carbohydrate chemistry as well as improvements in assay development for high throughput screening methods, carbohydrate-containing antibiotics can be used for the finding of potential drug leads that contribute to the fight against infections and diseases caused by (resistant) bacterial pathogens.
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Affiliation(s)
- Georg Schitter
- Technical University Graz, Institute of Organic Chemistry, Univ.-Doz. TMW, Dip.-Ing. GS, Glycogroup, A-8010 Graz, Austria +43 316 873 8744 ; +43 316 873 8740 ;
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11
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Concia AL, Gómez L, Bujons J, Parella T, Vilaplana C, Cardona PJ, Joglar J, Clapés P. Chemo-enzymatic synthesis and glycosidase inhibitory properties of DAB and LAB derivatives. Org Biomol Chem 2013; 11:2005-21. [PMID: 23381224 DOI: 10.1039/c3ob27343a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A chemo-enzymatic strategy for the preparation of 2-aminomethyl derivatives of (2R,3R,4R)-2-(hydroxymethyl)pyrrolidine-3,4-diol (also called 1,4-dideoxy-1,4-imino-D-arabinitol, DAB) and its enantiomer LAB is presented. The synthesis is based on the enzymatic preparation of DAB and LAB followed by the chemical modification of their hydroxymethyl functionality to afford diverse 2-aminomethyl derivatives. This strategy leads to novel aromatic, aminoalcohol and 2-oxopiperazine DAB and LAB derivatives. The compounds were preliminarily explored as inhibitors of a panel of commercial glycosidases, rat intestinal disaccharidases and against Mycobacterium tuberculosis, the causative agent of tuberculosis. It was found that the inhibitory profile of the new products differed considerably from the parent DAB and LAB. Furthermore, some of them were active inhibiting the growth of M. tuberculosis.
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Affiliation(s)
- Alda Lisa Concia
- Dept Química Biológica y Modelización Molecular, Instituto de Química Avanzada de Cataluña, IQAC-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain
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12
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Xu WY, Iwaki R, Jia YM, Zhang W, Kato A, Yu CY. NHC-mediated cross-coupling of sugar-derived cyclic nitrones with enals: general and efficient synthesis of polyhydroxylated pyrrolizidines and indolizidines. Org Biomol Chem 2013; 11:4622-39. [DOI: 10.1039/c3ob40696b] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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13
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Ayers BJ, Ngo N, Jenkinson SF, Martínez RF, Shimada Y, Adachi I, Weymouth-Wilson AC, Kato A, Fleet GWJ. Glycosidase Inhibition by All 10 Stereoisomeric 2,5-Dideoxy-2,5-iminohexitols Prepared from the Enantiomers of Glucuronolactone. J Org Chem 2012; 77:7777-92. [DOI: 10.1021/jo301243s] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Benjamin J. Ayers
- Chemistry
Research Laboratory,
Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Nigel Ngo
- Chemistry
Research Laboratory,
Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Sarah F. Jenkinson
- Chemistry
Research Laboratory,
Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
- Oxford Glycobiology Institute, University of Oxford, South Parks Road, Oxford OX1
3QU, U.K
| | - R. Fernando Martínez
- Chemistry
Research Laboratory,
Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Yousuke Shimada
- Department of Hospital
Pharmacy, University of Toyama, 2630 Sugitani,
Toyama 930-0194,
Japan
| | - 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
| | - George W. J. Fleet
- Chemistry
Research Laboratory,
Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
- Oxford Glycobiology Institute, University of Oxford, South Parks Road, Oxford OX1
3QU, U.K
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14
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Glawar AFG, Best D, Ayers BJ, Miyauchi S, Nakagawa S, Aguilar-Moncayo M, García Fernández JM, Ortiz Mellet C, Crabtree EV, Butters TD, Wilson FX, Kato A, Fleet GWJ. Scalable syntheses of both enantiomers of DNJNAc and DGJNAc from glucuronolactone: the effect of N-alkylation on hexosaminidase inhibition. Chemistry 2012; 18:9341-59. [PMID: 22736508 DOI: 10.1002/chem.201200110] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Indexed: 11/08/2022]
Abstract
The efficient scalable syntheses of 2-acetamido-1,2-dideoxy-D-galacto-nojirimycin (DGJNAc) and 2-acetamido-1,2-dideoxy-D-gluco-nojirimycin (DNJNAc) from D-glucuronolactone, as well as of their enantiomers from L-glucuronolactone, are reported. The evaluation of both enantiomers of DNJNAc and DGJNAc, along with their N-alkyl derivatives, as glycosidase inhibitors showed that DGJNAc and its N-alkyl derivatives were all inhibitors of α-GalNAcase but that none of the epimeric DNJNAc derivatives inhibited this enzyme. In contrast, both DGJNAc and DNJNAc, as well as their alkyl derivatives, were potent inhibitors of β-GlcNAcases and β-GalNAcases. Neither of the L-enantiomers showed any significant inhibition of any of the enzymes tested. Correlation of the in vitro inhibition with the cellular data, by using a free oligosaccharide analysis of the lysosomal enzyme inhibition, revealed the following structure-property relationship: hydrophobic side-chains preferentially promoted the intracellular access of iminosugars to those inhibitors with more-hydrophilic side-chain characteristics.
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Affiliation(s)
- Andreas F G Glawar
- Oxford Glycobiology Institute, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
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15
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Mallesham P, Vijaykumar B, Shin DS, Chandrasekhar S. Total synthesis of pyrrolidine alkaloid, Radicamine-B via Stille coupling. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.09.034] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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16
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Lenagh-Snow GMJ, Araujo N, Jenkinson SF, Rutherford C, Nakagawa S, Kato A, Yu CY, Weymouth-Wilson AC, Fleet GWJ. Inhibition of nonmammalian glycosidases by azetidine iminosugars derived from stable 3,5-di-O-triflates of pentoses. Org Lett 2011; 13:5834-7. [PMID: 21985023 DOI: 10.1021/ol2024482] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Efficient ring closure of stable crystalline 3,5-di-O-triflates of pentofuranosides with amines to form azetidines allowed preliminary evaluation of four-ring iminosugars as glycosidase inhibitors; significant and specific inhibition of nonmammalian α-glucosidases is shown by L-xylo- and L-arabino-iminosugar azetidines.
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Affiliation(s)
- Gabriel M J Lenagh-Snow
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
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17
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Foster MS, Oldham CD, May SW. Looking glass mechanism-based inhibition of peptidylglycine α-amidating monooxygenase. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Radical cyclizations of acylsilanes in the synthesis of (+)-swainsonine and formal synthesis of (−)-epiquinamide. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.12.048] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Stütz AE, Wrodnigg TM. Imino sugars and glycosyl hydrolases: historical context, current aspects, emerging trends. Adv Carbohydr Chem Biochem 2011; 66:187-298. [PMID: 22123190 DOI: 10.1016/b978-0-12-385518-3.00004-3] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Forty years of discoveries and research on imino sugars, which are carbohydrate analogues having a basic nitrogen atom instead of oxygen in the sugar ring and, acting as potent glycosidase inhibitors, have made considerable impact on our contemporary understanding of glycosidases. Imino sugars have helped to elucidate the catalytic machinery of glycosidases and have refined our methods and concepts of utilizing them. A number of new aspects have emerged for employing imino sugars as pharmaceutical compounds, based on their profound effects on metabolic activities in which glycosidases are involved. From the digestion of starch to the fight against viral infections, from research into malignant diseases to potential improvements in hereditary storage disorders, glycosidase action and inhibition are essential issues. This account aims at combining general developments with a focus on some niches where imino sugars have become useful tools for glycochemistry and glycobiology.
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Affiliation(s)
- Arnold E Stütz
- Institut für Organische Chemie, Technische Universität Graz, Austria
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da Cruz FP, Newberry S, Jenkinson SF, Wormald MR, Butters TD, Alonzi DS, Nakagawa S, Becq F, Norez C, Nash RJ, Kato A, Fleet GWJ. 4-C-Me-DAB and 4-C-Me-LAB - enantiomeric alkyl-branched pyrrolidine iminosugars - are specific and potent α-glucosidase inhibitors; acetone as the sole protecting group. Tetrahedron Lett 2011; 52:219-223. [PMID: 21157573 DOI: 10.1016/j.tetlet.2010.10.173] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The syntheses of 4-C-Me-DAB [1,4-dideoxy-1,4-imino-4-C-methyl-d-arabinitol] from l-erythronolactone and of 4-C-Me-LAB [from d-erythronolactone] require only a single acetonide protecting group. The effect of pH on the NMR spectra of 4-C-Me-DAB [pK(a) of the salt around 8.4] is discussed and illustrates the need for care in analysis of both coupling constants and chemical shift. 4-C-Me-DAB (for rat intestinal sucrase K(i) 0.89 μM, IC(50) 0.41 μM) is a competitive - whereas 4-C-Me-LAB (for rat intestinal sucrase K(i) 0.95 μM, IC(50) 0.66 μM) is a non-competitive - specific and potent α-glucosidase inhibitor. A rationale for the α-glucosidase inhibition by DAB, LAB, 4-C-Me-DAB, 4-C-Me-LAB, and isoDAB - but not isoLAB - is provided. Both are inhibitors of endoplasmic reticulum (ER) resident α-glucosidase I and II.
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Affiliation(s)
- Filipa P da Cruz
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
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Kumar A, Alam MA, Rani S, Vankar YD. Synthesis of 1,4-dideoxy-1,4-iminoheptitol and 1,5-dideoxy-1,5-iminooctitols from d-xylose. Carbohydr Res 2010; 345:1142-8. [DOI: 10.1016/j.carres.2010.04.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2010] [Revised: 04/05/2010] [Accepted: 04/18/2010] [Indexed: 10/19/2022]
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Hu XG, Bartholomew B, Nash RJ, Wilson FX, Fleet GWJ, Nakagawa S, Kato A, Jia YM, Well RV, Yu CY. Synthesis and Glycosidase Inhibition of the Enantiomer of (−)-Steviamine, the First Example of a New Class of Indolizidine Alkaloid. Org Lett 2010; 12:2562-5. [DOI: 10.1021/ol1007718] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiang-Guo Hu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Graduate University of The Chinese Academy of Sciences, Beijing 100049, China, Phytoquest Limited, IBERS, Plas Gogerddan, Aberystwyth SY23 3EB, Ceredigion, Wales, U.K., Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY,
| | - Barbara Bartholomew
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Graduate University of The Chinese Academy of Sciences, Beijing 100049, China, Phytoquest Limited, IBERS, Plas Gogerddan, Aberystwyth SY23 3EB, Ceredigion, Wales, U.K., Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY,
| | - Robert J. Nash
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Graduate University of The Chinese Academy of Sciences, Beijing 100049, China, Phytoquest Limited, IBERS, Plas Gogerddan, Aberystwyth SY23 3EB, Ceredigion, Wales, U.K., Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY,
| | - Francis X. Wilson
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Graduate University of The Chinese Academy of Sciences, Beijing 100049, China, Phytoquest Limited, IBERS, Plas Gogerddan, Aberystwyth SY23 3EB, Ceredigion, Wales, U.K., Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY,
| | - George W. J. Fleet
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Graduate University of The Chinese Academy of Sciences, Beijing 100049, China, Phytoquest Limited, IBERS, Plas Gogerddan, Aberystwyth SY23 3EB, Ceredigion, Wales, U.K., Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY,
| | - Shinpei Nakagawa
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Graduate University of The Chinese Academy of Sciences, Beijing 100049, China, Phytoquest Limited, IBERS, Plas Gogerddan, Aberystwyth SY23 3EB, Ceredigion, Wales, U.K., Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY,
| | - Atsushi Kato
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Graduate University of The Chinese Academy of Sciences, Beijing 100049, China, Phytoquest Limited, IBERS, Plas Gogerddan, Aberystwyth SY23 3EB, Ceredigion, Wales, U.K., Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY,
| | - Yue-Mei Jia
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Graduate University of The Chinese Academy of Sciences, Beijing 100049, China, Phytoquest Limited, IBERS, Plas Gogerddan, Aberystwyth SY23 3EB, Ceredigion, Wales, U.K., Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY,
| | - Renate van Well
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Graduate University of The Chinese Academy of Sciences, Beijing 100049, China, Phytoquest Limited, IBERS, Plas Gogerddan, Aberystwyth SY23 3EB, Ceredigion, Wales, U.K., Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY,
| | - Chu-Yi Yu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Graduate University of The Chinese Academy of Sciences, Beijing 100049, China, Phytoquest Limited, IBERS, Plas Gogerddan, Aberystwyth SY23 3EB, Ceredigion, Wales, U.K., Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY,
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Bello C, Cea M, Dal Bello G, Garuti A, Rocco I, Cirmena G, Moran E, Nahimana A, Duchosal MA, Fruscione F, Pronzato P, Grossi F, Patrone F, Ballestrero A, Dupuis M, Sordat B, Nencioni A, Vogel P. Novel 2-[(benzylamino)methyl]pyrrolidine-3,4-diol derivatives as α-mannosidase inhibitors and with antitumor activities against hematological and solid malignancies. Bioorg Med Chem 2010; 18:3320-34. [PMID: 20346684 DOI: 10.1016/j.bmc.2010.03.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Revised: 03/01/2010] [Accepted: 03/04/2010] [Indexed: 11/28/2022]
Affiliation(s)
- Claudia Bello
- Laboratory of Glycochemistry and Asymmetric Synthesis (LGSA), Ecole Polytechnique Fédérale de Lausanne (EPFL), Batochime, CH-1015 Lausanne, Switzerland.
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Stocker BL, Dangerfield EM, Win‐Mason AL, Haslett GW, Timmer MSM. Recent Developments in the Synthesis of Pyrrolidine‐Containing Iminosugars. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901320] [Citation(s) in RCA: 153] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Bridget L. Stocker
- Malaghan Institute of Medical Research, P. O. Box 7060, Wellington, New Zealand
| | - Emma M. Dangerfield
- Malaghan Institute of Medical Research, P. O. Box 7060, Wellington, New Zealand
- School of Chemical and Physical Sciences, Victoria University of Wellington, P. O. Box 600, Wellington, New Zealand, Fax: +64‐4‐463‐5241
| | - Anna L. Win‐Mason
- Malaghan Institute of Medical Research, P. O. Box 7060, Wellington, New Zealand
- School of Chemical and Physical Sciences, Victoria University of Wellington, P. O. Box 600, Wellington, New Zealand, Fax: +64‐4‐463‐5241
| | - Gregory W. Haslett
- Malaghan Institute of Medical Research, P. O. Box 7060, Wellington, New Zealand
- School of Chemical and Physical Sciences, Victoria University of Wellington, P. O. Box 600, Wellington, New Zealand, Fax: +64‐4‐463‐5241
| | - Mattie S. M. Timmer
- School of Chemical and Physical Sciences, Victoria University of Wellington, P. O. Box 600, Wellington, New Zealand, Fax: +64‐4‐463‐5241
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Best D, Wang C, Weymouth-Wilson AC, Clarkson RA, Wilson FX, Nash RJ, Miyauchi S, Kato A, Fleet GW. Looking glass inhibitors: scalable syntheses of DNJ, DMDP, and (3R)-3-hydroxy-l-bulgecinine from d-glucuronolactone and of l-DNJ, l-DMDP, and (3S)-3-hydroxy-d-bulgecinine from l-glucuronolactone. DMDP inhibits β-glucosidases and β-galactosidases whereas l-DMDP is a potent and specific inhibitor of α-glucosidases. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.01.017] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Convergent, stereoselective syntheses of the glycosidase inhibitors broussonetines C, O and P. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.10.066] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Mercer TB, Jenkinson SF, Bartholomew B, Nash RJ, Miyauchi S, Kato A, Fleet GW. Looking glass inhibitors: both enantiomeric N-benzyl derivatives of 1,4-dideoxy-1,4-imino-d-lyxitol [a potent competitive inhibitor of α-d-galactosidase] and of 1,4-dideoxy-1,4-imino-l-lyxitol [a weak competitive inhibitor of α-d-galactosidase] inhibit naringinase, an α-l-rhamnosidase competitively. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.10.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Enantiopure alkaloid analogues and iminosugars from proline derivatives: stereocontrol in sequential processes. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.04.082] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Rountree JSS, Butters TD, Wormald MR, Boomkamp SD, Dwek RA, Asano N, Ikeda K, Evinson EL, Nash RJ, Fleet GWJ. Design, synthesis, and biological evaluation of enantiomeric beta-N-acetylhexosaminidase inhibitors LABNAc and DABNAc as potential agents against Tay-Sachs and Sandhoff disease. ChemMedChem 2009; 4:378-92. [PMID: 19145603 DOI: 10.1002/cmdc.200800350] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
N-Acetylhexosaminidases are of considerable importance in mammals and are involved in various significant biological processes. In humans, deficiencies of these enzymes in the lysosome, resulting from inherited genetic defects, cause the glycolipid storage disorders Tay-Sachs and Sandhoff diseases. One promising therapy for these diseases involves the use of beta-N-acetylhexosaminidase inhibitors as chemical chaperones to enhance the enzyme activity above sub-critical levels. Herein we describe the synthesis and biological evaluation of a potent inhibitor, 2-acetamido-1,4-imino-1,2,4-trideoxy-L-arabinitol (LABNAc), in a high-yielding 11-step procedure from D-lyxonolactone. The N-benzyl and N-butyl analogues were also prepared and found to be potent inhibitors. The enantiomers DABNAc and NBn-DABNAc were synthesised from L-lyxonolactone, and were also evaluated. The L-iminosugar LABNAc and its derivatives were found to be potent noncompetitive inhibitors of some beta-N-acetylhexosaminidases, while the D-iminosugar DABNAc and its derivatives were found to be weaker competitive inhibitors. These results support previous work postulating that D-iminosugar mimics inhibit D-glycohydrolases competitively, and that their corresponding L-enantiomers show noncompetitive inhibition of these enzymes. Molecular modelling studies confirm that the spatial organisation in enantiomeric inhibitors leads to a different overlay with the monosaccharide substrate. Initial cell-based studies suggest that NBn-LABNAc can act as a chemical chaperone to enhance the deficient enzyme's activity to levels that may cause a positive pharmacological effect. LABNAc, NBn-LABNAc, and NBu-LABNAc are potent and selective inhibitors of beta-N-acetylhexosaminidase and may be useful as therapeutic agents for treating adult Tay-Sachs and Sandhoff diseases.
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Affiliation(s)
- J S Shane Rountree
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK.
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Davis BG. A silver-lined anniversary of Fleet iminosugars: 1984–2009, from DIM to DRAM to LABNAc. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.03.013] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Synthesis of the first example of a nucleoside analogue bearing a 5′-deoxy-β-d-allo-septanose as a seven-membered ring sugar moiety. Carbohydr Res 2009; 344:448-53. [DOI: 10.1016/j.carres.2008.12.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2008] [Revised: 12/19/2008] [Accepted: 12/23/2008] [Indexed: 01/13/2023]
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Ribes C, Falomir E, Murga J, Carda M, Alberto Marco J. Convergent, stereoselective syntheses of the glycosidase inhibitors broussonetines D and M. Org Biomol Chem 2009; 7:1355-60. [DOI: 10.1039/b821431j] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Alam MA, Kumar A, Vankar YD. Total Synthesis of L-(+)-Swainsonine and Other Indolizidine Azasugars from D-Glucose. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800649] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ribes C, Falomir E, Carda M, Marco JA. Short, Stereoselective Synthesis of the Naturally Occurring Pyrrolidine Radicamine B and a Formal Synthesis of Nectrisine. J Org Chem 2008; 73:7779-82. [DOI: 10.1021/jo8012989] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Celia Ribes
- Departamento de Química Inorgánica y Orgánica, Univ. Jaume I, E-12071 Castellón, Spain, and Departamento de Química Orgánica, Univ. de Valencia, E-46100 Burjassot, Valencia, Spain
| | - Eva Falomir
- Departamento de Química Inorgánica y Orgánica, Univ. Jaume I, E-12071 Castellón, Spain, and Departamento de Química Orgánica, Univ. de Valencia, E-46100 Burjassot, Valencia, Spain
| | - Miguel Carda
- Departamento de Química Inorgánica y Orgánica, Univ. Jaume I, E-12071 Castellón, Spain, and Departamento de Química Orgánica, Univ. de Valencia, E-46100 Burjassot, Valencia, Spain
| | - J. Alberto Marco
- Departamento de Química Inorgánica y Orgánica, Univ. Jaume I, E-12071 Castellón, Spain, and Departamento de Química Orgánica, Univ. de Valencia, E-46100 Burjassot, Valencia, Spain
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Håkansson AE, van Ameijde J, Horne G, Nash RJ, Wormald MR, Kato A, Besra GS, Gurcha S, Fleet GW. Synthesis of the naringinase inhibitors l-swainsonine and related 6-C-methyl-l-swainsonine analogues: (6R)-C-methyl-l-swainsonine is a more potent inhibitor of l-rhamnosidase by an order of magnitude than l-swainsonine. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2007.10.142] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Hotchkiss DJ, Kato A, Odell B, Claridge TD, Fleet GW. Homochiral carbon branched piperidines from carbon branched sugar lactones: 4-C-methyl-deoxyfuconojirimycin (DFJ) and its enantiomer—removal of glycosidase inhibition. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2007.02.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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