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Santhanam V, Modi P, Mishra UK, Jahan I, Ramesh NG, Deep S. Rational design and synthesis of novel triazole- and tetrazole-fused iminosugars as potential inhibitors of amyotrophic lateral sclerosis (ALS) linked SOD1 aggregation. Int J Biol Macromol 2023; 253:126900. [PMID: 37714236 DOI: 10.1016/j.ijbiomac.2023.126900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 08/25/2023] [Accepted: 09/12/2023] [Indexed: 09/17/2023]
Abstract
In this manuscript we report the first example of an iminosugar that inhibits superoxide dismutase fibrillation associated with the amyotrophic lateral sclerosis (ALS). The present work involves synthesis of novel triazole and tetrazole embedded iminosugars, synthesized in 11-13 high yielding steps starting from readily available tri-O-benzyl-D-glucal and proceeding through a concomitant azidation - thermal intramolecular [3 + 2] cycloaddition reaction as the key step. One of these pre-designed iminosugars was found to inhibit fibrillation of SOD1 and also has shown propensity to break pre-formed fibrils. Docking and MD simulation studies suggest that the most probable interaction of this compound is a hydrogen bonding with Arg69, a loop IV residue of SOD1, which has a crucial role in stabilizing the native conformation of SOD1.
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Affiliation(s)
- Venkatesan Santhanam
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Priya Modi
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Umesh K Mishra
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Ishrat Jahan
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Namakkal G Ramesh
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Shashank Deep
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
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2
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Miglani V, Sharma P, Kumar Narula A. Investigation of Iminosugars as Antiviral Agents against SARS-CoV-2 Main Protease: Inhibitor Design and Optimization, Molecular Docking, and Molecular Dynamics Studies to Explore Potential Inhibitory Effect of 1-Deoxynojirmycin Series. Curr Comput Aided Drug Des 2023; 20:CAD-EPUB-133967. [PMID: 37612857 DOI: 10.2174/1573409920666230823094343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 07/05/2023] [Accepted: 07/19/2023] [Indexed: 08/25/2023]
Abstract
BACKGROUND The Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) poses an enormous challenge to human health and economy at a global level. According to WHO's latest data, till now, there have been a total of 641,435,884 confirmed cases of COVID-19, and the associated deaths are 6,621,060. Though few vaccinations have been approved for emergency usage, antiviral medications for long-term therapeutics are still being sought. The current research seeks to identify the inhibitory effect of iminosugars, particularly 1-deoxynojirmycin (IDNJ) series, against SARS-CoV-2 main protease (SARS-CoV2-Mpro) using an inhibitor optimization approach for 1DNJ series. AIM The aim of this study was to investigate the inhibitory effect of iminosugars, specifically 1-deoxynojirmycin (1-DNJ) derivatives, on SARS-CoV-2 main protease (Mpro) as it plays a vital role in viral propagation and transcription and is shaped like a heart. OBJECTIVE The main objective of this study was to find the possibility of 1-DNJ derivatives being potent inhibitors against SARS CoV2 Mpro. This study was focused on finding the most probable conformation in which DNJ derivatives could bind to Mpro. Another objective was to obtain molecular-level details by getting insights into stable interactions formed between the ligand and receptor. METHOD In silico molecular mechanics (MM) based techniques were employed to identify the best-docked inhibitors using molecular docking, and complexes that showed stable interactions were further subjected to 200 ns of molecular dynamics (MD) simulations to check the stability of ligand into the binding pocket of SARS-CoV2-Mpro. The inhibitors that formed stable complexes were further tested for their ADME properties in order to check the pharmacokinetic parameters as well as their therapeutic importance. RESULT Docking was performed on 29 compounds from two different series against SARS-CoV-2 main protease, Mpro (PDB ID: 6LZE). Twelve compounds were found to have high docking scores and better interactions with the active site of Mpro, as compared to the co-crystallized ligand. Furthermore, the three highest-scoring docked compounds (17a, 7, and 8) depicted strong and stable complex formation, throughout the 200 ns molecular dynamics simulation, by analyzing the binding energy (MM/GBSA). The molecules were discovered to form stable interactions with conserved active-site residues, which play an important role in demonstrating activity in structure-based drug design. The ADMET analysis was performed using Qikprop, and the proposed stable derivatives passed all of the needed drug discovery standards, potentially inhibiting the Mpro of SARS-CoV-2. CONCLUSION The present findings confer opportunities for compounds 17a, 7, and 8 that could be developed as new therapeutic agents against COVID-19. These compounds are suggested on the basis of pharmacokinetic parameters as well as therapeutic importance and hence could be tested in-vitro.
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Affiliation(s)
- Vashima Miglani
- Centre of Excellence in Pharmaceutical Sciences, Guru Gobind Singh Indraprastha University Sector 16-c Dwarka Delhi 110 079 (INDIA)
| | - Parul Sharma
- Centre of Excellence in Pharmaceutical Sciences, Guru Gobind Singh Indraprastha University Sector 16-c Dwarka Delhi 110 079 (INDIA)
| | - Anudeep Kumar Narula
- Centre of Excellence in Pharmaceutical Sciences, Guru Gobind Singh Indraprastha University Sector 16-c Dwarka Delhi 110 079 (INDIA)
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3
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Gundamalla R, Bantu R, Sridhar B, Jithender Reddy G, Subba Reddy BV. Mannich-type addition of cyclic 1,3-diketones to N-acyliminium ions: Access to aza-sugars. Carbohydr Res 2023; 528:108811. [PMID: 37094532 DOI: 10.1016/j.carres.2023.108811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 03/25/2023] [Accepted: 04/11/2023] [Indexed: 04/26/2023]
Abstract
A novel three-component strategy has been developed for the synthesis of iminosugars in good to excellent yields. This is the first report on the Mannich type addition of cyclic 1,3-diketones to aza-acetal derived from hydroxy-γ-lactone and arylamine to produce a novel series of aza-sugars with high selectivity.
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Affiliation(s)
- Rachel Gundamalla
- Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh, India
| | - Rajashaker Bantu
- Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India
| | - B Sridhar
- Laboratory of X-ray Crystallography, India
| | - G Jithender Reddy
- Centre for NMR and Structural Chemistry, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, India
| | - B V Subba Reddy
- Fluoro & Agrochemicals, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India.
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4
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Zi D, Song YY, Lu TT, Kise M, Kato A, Wang JZ, Jia YM, Li YX, Fleet GWJ, Yu CY. Nanomolar β-glucosidase and β-galactosidase inhibition by enantiomeric α-1-C-alkyl-1,4-dideoxy-1,4-imino-arabinitol derivatives. Eur J Med Chem 2023; 247:115056. [PMID: 36603505 DOI: 10.1016/j.ejmech.2022.115056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 12/22/2022] [Accepted: 12/24/2022] [Indexed: 12/29/2022]
Abstract
A series of α-1-C-alkyl DAB (1,4-dideoxy-1,4-imino-d-arabinitol) and LAB (1,4-dideoxy-1,4-imino-l-arabinitol) derivatives with aryl substituents have been designed as analogues of broussonetine W (12), and assayed as glycosidase inhibitors. While the inhibition spectrum of α-1-C-alkyl DAB derivative 16 showed a good correlation to that of broussonetine W (12), introduction of substituents on the terminal aryl (17a-f) or hydroxyl groups at C-1' position of the alkyl chains (18a-e) decreased their α-glucosidase inhibitions but greatly improved their inhibitions of bovine liver β-glucosidase and β-galactosidase. Furthermore, epimerization of C-1' configurations of compounds 18a-e clearly lowered their inhibition potency of bovine liver β-glucosidase and β-galactosidase. Notably, some of the α-1-C-alkyl DAB derivatives were also found to have potent human lysosome β-glucosidase inhibitions. In contrast, enantiomers of compounds 18a-e and 1'-epi-18a-e generally showed increased α-glucosidase inhibitions, but sharply decreased bovine liver β-glucosidase and β-galactosidase inhibitions. Molecular docking calculations unveiled the novel two set of binding modes for each series of compounds; introduction of C-1' hydroxyl altered the conformations of the pyrrolidine rings and orientation of their long chains, resulting in improved accommodation in the hydrophobic grooves. The compounds reported herein are very potent β-glucosidase and β-galactosidase inhibitions with novel binding mode; and the structure-activity relationship provides guidance for design and development of more pyrrolidine pharmacological chaperones for lysosomal storage diseases.
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Affiliation(s)
- Dong Zi
- 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
| | - Ying-Ying Song
- 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; Qilu University of Technology (Shandong Academy of Sciences), Shandong Analysis and Test Center, Laboratory of Immunology for Environment and Health, Jinan, 250014, Shandong, China
| | - 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
| | - Maki Kise
- 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.
| | - Jun-Zhe Wang
- 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
| | - 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; 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.
| | - George W J Fleet
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK
| | - 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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5
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Evangelista TCS, López Ó, Puerta A, Fernandes MX, Ferreira SB, Padrón JM, Fernández-Bolaños JG, Sydnes MO, Lindbäck E. A hybrid of 1-deoxynojirimycin and benzotriazole induces preferential inhibition of butyrylcholinesterase (BuChE) over acetylcholinesterase (AChE). J Enzyme Inhib Med Chem 2022; 37:2395-2402. [PMID: 36065944 PMCID: PMC9467581 DOI: 10.1080/14756366.2022.2117912] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
The synthesis of four heterodimers in which the copper(I)-catalysed azide-alkyne cycloaddition was employed to connect a 1-deoxynojirimycin moiety with a benzotriazole scaffold is reported. The heterodimers were investigated as inhibitors against acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE). The heterodimers displayed preferential inhibition (> 9) of BuChE over AChE in the micromolar concentration range (IC50 = 7-50 µM). For the most potent inhibitor of BuChE, Cornish-Bowden plots were used, which demonstrated that it behaves as a mixed inhibitor. Modelling studies of the same inhibitor demonstrated that the benzotriazole and 1-deoxynojirimycin moiety is accommodated in the peripheral anionic site and catalytic anionic site, respectively, of AChE. The binding mode to BuChE was different as the benzotriazole moiety is accommodated in the catalytic anionic site.
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Affiliation(s)
- Tereza Cristina Santos Evangelista
- Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Stavanger, Norway.,Department of Organic Chemistry, Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Óscar López
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Seville, Spain
| | - Adrián Puerta
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González" (IUBO-AG), Universidad de La Laguna, La Laguna, Spain
| | - Miguel X Fernandes
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González" (IUBO-AG), Universidad de La Laguna, La Laguna, Spain
| | - Sabrina Baptista Ferreira
- Department of Organic Chemistry, Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - José M Padrón
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González" (IUBO-AG), Universidad de La Laguna, La Laguna, Spain
| | | | - Magne O Sydnes
- Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Stavanger, Norway
| | - Emil Lindbäck
- Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Stavanger, Norway
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Hernández D, Porras M, Boto A. Structural diversity using amino acid "Customizable Units": conversion of hydroxyproline (Hyp) into nitrogen heterocycles. Amino Acids 2022; 54:955-966. [PMID: 35414005 PMCID: PMC9213323 DOI: 10.1007/s00726-022-03159-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 03/20/2022] [Indexed: 12/01/2022]
Abstract
The ability of amino acid “customizable units” to generate structural diversity is illustrated by the conversion of 4-hydroxyproline (Hyp) units into a variety of nitrogen heterocycles. After a first common step, where the unit underwent a one-pot decarboxylation–alkylation reaction to afford 2-alkylpyrrolidines with high stereoselectivity, a divergent step was carried out. Thus, the deprotected 4-hydroxy group was used either to initiate a radical scission that afforded aliphatic β-amino aldehydes, or to carry out an elimination reaction, to give 2-alkyl-2,5-dihydro-1H-pyrroles. In the first case, the amines underwent a tandem reductive amination–cyclization to afford β-amino-δ-lactams, an efficient rigidifying unit in peptides. Different lactam N-substituents, such as alkylamines, peptides, and alkenyl chains suitable for olefin metathesis were introduced this way. In the second case, the pyrrole derivatives were efficiently converted into alkaloid and iminosugar derivatives in good global yields and with excellent stereoselectivity.
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Affiliation(s)
- Dácil Hernández
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez, 3, 38206, La Laguna, Tenerife, Spain.
| | - Marina Porras
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez, 3, 38206, La Laguna, Tenerife, Spain
| | - Alicia Boto
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez, 3, 38206, La Laguna, Tenerife, Spain.
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7
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De Angelis M, Primitivo L, Lizzio F, Agostinelli S, Sappino C, Ben Romdan I, Bonanni L, D'Annibale A, Antonioletti R, Ricelli A, Righi G. Total stereocontrolled synthesis of a novel pyrrolizidine iminosugar. Carbohydr Res 2021; 511:108484. [PMID: 34920269 DOI: 10.1016/j.carres.2021.108484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 11/19/2021] [Accepted: 11/24/2021] [Indexed: 11/02/2022]
Abstract
Herein we describe a versatile approach to the pyrrolizidine alkaloids skeleton by tailoring our original strategy already used for the pyrrolidine iminosugars synthesis. The key steps are the regio- and stereoselective azidolysis of the suitable chiral vinyl epoxide and then asymmetric dihydroxylation of the corresponding azido alcohol by using (DHQ)2AQN as the ligand. Further optimized elaborations addressed to the closure of the two rings allowed us to achieve the target iminosugar with complete stereocontrol. The wide range of pyrrolizidine iminosugars' biological properties make them a key focus of new drug research and therefore the development of synthetic strategies for obtaining them is of decisive importance.
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Affiliation(s)
- Martina De Angelis
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy.
| | - Ludovica Primitivo
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Federica Lizzio
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Sonia Agostinelli
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Carla Sappino
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Ilaria Ben Romdan
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Luciano Bonanni
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Andrea D'Annibale
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Roberto Antonioletti
- CNR-IBPM, "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Alessandra Ricelli
- CNR-IBPM, "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Giuliana Righi
- CNR-IBPM, "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy.
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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9
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Ahuja-Casarín AI, Merino-Montiel P, Vega-Baez JL, Montiel-Smith S, Fernandes MX, Lagunes I, Maya I, Padrón JM, López Ó, Fernández-Bolaños JG. Tuning the activity of iminosugars: novel N-alkylated deoxynojirimycin derivatives as strong BuChE inhibitors. J Enzyme Inhib Med Chem 2021; 36:138-146. [PMID: 33228403 PMCID: PMC7717699 DOI: 10.1080/14756366.2020.1847101] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
We have designed unprecedented cholinesterase inhibitors based on 1-deoxynojirimycin as potential anti-Alzheimer’s agents. Compounds are comprised of three key structural motifs: the iminosugar, for interaction with cholinesterase catalytic anionic site (CAS); a hydrocarbon tether with variable lengths, and a fragment derived from 2-phenylethanol for promoting interactions with peripheral anionic site (PAS). Title compounds exhibited good selectivity towards BuChE, strongly depending on the substitution pattern and the length of the tether. The lead compounds were found to be strong mixed inhibitors of BuChE (IC50 = 1.8 and 1.9 µM). The presumptive binding mode of the lead compound was analysed using molecular docking simulations, revealing H-bond interactions with the catalytic subsite (His438) and CAS (Trp82 and Glu197) and van der Waals interactions with PAS (Thr284, Pro285, Asn289). They also lacked significant antiproliferative activity against tumour and non-tumour cells at 100 µM, making them promising new agents for tackling Alzheimer’s disease through the cholinergic approach.
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Affiliation(s)
- Ana I Ahuja-Casarín
- Facultad de Ciencias Químicas, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Penélope Merino-Montiel
- Facultad de Ciencias Químicas, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - José Luis Vega-Baez
- Facultad de Ciencias Químicas, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Sara Montiel-Smith
- Facultad de Ciencias Químicas, Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Puebla, México
| | - Miguel X Fernandes
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González" (IUBO-AG), Universidad de La Laguna, La Laguna, Spain
| | - Irene Lagunes
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González" (IUBO-AG), Universidad de La Laguna, La Laguna, Spain
| | - Inés Maya
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Seville, Spain
| | - José M Padrón
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González" (IUBO-AG), Universidad de La Laguna, La Laguna, Spain
| | - Óscar López
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Seville, Spain
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10
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Evans DeWald L, Starr C, Butters T, Treston A, Warfield KL. Iminosugars: A host-targeted approach to combat Flaviviridae infections. Antiviral Res 2020; 184:104881. [PMID: 32768411 PMCID: PMC7405907 DOI: 10.1016/j.antiviral.2020.104881] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/07/2020] [Accepted: 07/13/2020] [Indexed: 12/12/2022]
Abstract
N-linked glycosylation is the most common form of protein glycosylation and is required for the proper folding, trafficking, and/or receptor binding of some host and viral proteins. As viruses lack their own glycosylation machinery, they are dependent on the host's machinery for these processes. Certain iminosugars are known to interfere with the N-linked glycosylation pathway by targeting and inhibiting α-glucosidases I and II in the endoplasmic reticulum (ER). Perturbing ER α-glucosidase function can prevent these enzymes from removing terminal glucose residues on N-linked glycans, interrupting the interaction between viral glycoproteins and host chaperone proteins that is necessary for proper folding of the viral protein. Iminosugars have demonstrated broad-spectrum antiviral activity in vitro and in vivo against multiple viruses. This review discusses the broad activity of iminosugars against Flaviviridae. Iminosugars have shown favorable activity against multiple members of the Flaviviridae family in vitro and in murine models of disease, although the activity and mechanism of inhibition can be virus-specfic. While iminosugars are not currently approved for the treatment of viral infections, their potential use as future host-targeted antiviral (HTAV) therapies continues to be investigated.
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Affiliation(s)
| | - Chloe Starr
- Emergent BioSolutions, Gaithersburg, MD, 20879, USA
| | | | | | - Kelly L. Warfield
- Emergent BioSolutions, Gaithersburg, MD, 20879, USA,Corresponding author. 400 Professional Drive, Gaithersburg, MD, 20879, USA
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11
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De Angelis M, Primitivo L, Lucarini C, Agostinelli S, Sappino C, Ricelli A, Righi G. Stereocontrolled total synthesis of iminosugar 1,4-dideoxy-1,4-imino-D-iditol. Carbohydr Res 2020; 492:108028. [PMID: 32413728 DOI: 10.1016/j.carres.2020.108028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 04/27/2020] [Accepted: 04/28/2020] [Indexed: 01/10/2023]
Abstract
The first stereocontrolled total synthesis of iminosugar 1,4-dideoxy-1,4-imino-D-iditol is described. The key step in our approach was the double diastereoselection in the asymmetric dihydroxylation (AD) of suitable optically active olefin, the chiral vinyl azido alcohol 9. Performing the AD using the most common Cinchona alkaloids as ligands enabled us to identify the ligand of choice for the stereodivergent synthesis of 1,4-dideoxy-1,4-imino-D-iditol and 1,4-dideoxy-1,4-imino-D-galactitol. These type of iminosugars, both natural and unnatural, are intensively studied for their promising chemotherapeutic properties against viral infections, diabetes, cancer, and tuberculosis.
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Affiliation(s)
- Martina De Angelis
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Roma, Italy.
| | - Ludovica Primitivo
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Roma, Italy
| | - Claudia Lucarini
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Roma, Italy
| | - Sonia Agostinelli
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Roma, Italy
| | - Carla Sappino
- "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Roma, Italy
| | - Alessandra Ricelli
- CNR-IBPM, "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy
| | - Giuliana Righi
- CNR-IBPM, "Sapienza" University of Rome, Dep. Chemistry, P.le A. Moro 5, 00185, Rome, Italy.
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12
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Harit VK, Ramesh NG. A common strategy towards the synthesis of 1,4-dideoxy-1,4-imino-l-xylitol, deacetyl (+)-anisomycin and amino-substituted piperidine iminosugars. Carbohydr Res 2020; 492:107988. [PMID: 32387805 DOI: 10.1016/j.carres.2020.107988] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/17/2020] [Accepted: 03/17/2020] [Indexed: 12/15/2022]
Abstract
A strategy towards the synthesis of three different target molecules, namely 1,4-dideoxy-1,4-imino-l-xylitol, deacetyl (+)-anisomycin and amino-substituted piperidine iminosugars, molecules of potential biological and medicinal significance, is reported from a common amino-vicinal diol intermediate derived from tri-O-benzyl-d-glucal. Construction of the key pyrrolidine ring present in 1,4-dideoxy-1,4-imino-l-xylitol and (+)-anisomycin was a consequence of thermodynamically driven concomitant intramolecular nucleophilic addition reaction of the amino group to the resultant aldehyde obtained by oxidative cleavage of the amino-vicinal diol. Alternatively, double nucleophilic substitution on an amino-diol, after mesylation, with various amines delivered amino-substituted piperidine iminosugars in good yields.
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Affiliation(s)
- Vimal Kant Harit
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Namakkal G Ramesh
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
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13
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Martínez-Bailén M, Carmona AT, Cardona F, Matassini C, Goti A, Kubo M, Kato A, Robina I, Moreno-Vargas AJ. Synthesis of multimeric pyrrolidine iminosugar inhibitors of human β-glucocerebrosidase and α-galactosidase A: First example of a multivalent enzyme activity enhancer for Fabry disease. Eur J Med Chem 2020; 192:112173. [PMID: 32146376 DOI: 10.1016/j.ejmech.2020.112173] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 02/12/2020] [Accepted: 02/19/2020] [Indexed: 11/29/2022]
Abstract
The synthesis of a chemical library of multimeric pyrrolidine-based iminosugars by incorporation of three pairs of epimeric pyrrolidine-azides into different alkyne scaffolds via CuAAC is presented. The new multimers were evaluated as inhibitors of two important therapeutic enzymes, human α-galactosidase A (α-Gal A) and lysosomal β-glucocerebrosidase (GCase). Structure-activity relationships were established focusing on the iminosugar inhitope, the valency of the dendron and the linker between the inhitope and the central scaffold. Remarkable is the result obtained in the inhibition of α-Gal A, where one of the nonavalent compounds showed potent inhibition (0.20 μM, competitive inhibition), being a 375-fold more potent inhibitor than the monovalent reference. The potential of the best α-Gal A inhibitors to act as pharmacological chaperones was analyzed by evaluating their ability to increase the activity of this enzyme in R301G fibroblasts from patients with Fabry disease, a genetic disorder related with a reduced activity of α-Gal A. The best enzyme activity enhancement was obtained for the same nonavalent compound, which increased 5.2-fold the activity of the misfolded enzyme at 2.5 μM, what constitutes the first example of a multivalent α-Gal A activity enhancer of potential interest in the treatment of Fabry disease.
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Affiliation(s)
- Macarena Martínez-Bailén
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, C/Prof. García González, 1, 41012, Sevilla, Spain
| | - Ana T Carmona
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, C/Prof. García González, 1, 41012, Sevilla, Spain.
| | - Francesca Cardona
- Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019, Sesto Fiorentino, Firenze, Italy; Consorzio Interuniversitario Nazionale di Ricerca in Metodologie e Processi Innovativi di Sintesi (CINMPIS), 70125, Bari, Italy
| | - Camilla Matassini
- Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019, Sesto Fiorentino, Firenze, Italy
| | - Andrea Goti
- Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze, Via della Lastruccia 3-13, 50019, Sesto Fiorentino, Firenze, Italy; Consorzio Interuniversitario Nazionale di Ricerca in Metodologie e Processi Innovativi di Sintesi (CINMPIS), 70125, Bari, Italy
| | - Moemi Kubo
- Department of Hospital Pharmacy, University of Toyama, Toyama, 930-0194, Japan
| | - Atsushi Kato
- Department of Hospital Pharmacy, University of Toyama, Toyama, 930-0194, Japan
| | - Inmaculada Robina
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, C/Prof. García González, 1, 41012, Sevilla, Spain
| | - Antonio J Moreno-Vargas
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, C/Prof. García González, 1, 41012, Sevilla, Spain.
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14
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Carroll AW, Pyne SG. The History of the Glycosidase Inhibiting Hyacinthacine C-type Alkaloids: From Discovery to Synthesis. Curr Org Synth 2020; 16:498-522. [PMID: 31984928 PMCID: PMC7432187 DOI: 10.2174/1570179416666190126100312] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 01/10/2019] [Accepted: 01/15/2019] [Indexed: 11/25/2022]
Abstract
Background: The inherent glycosidase inhibitory activity and potentially therapeutic value of the polyhydroxylated pyrrolizidine alkaloids containing a hydroxymethyl substituent at the C-3 position have been well documented. Belonging to this class, the naturally occurring hyacinthacine C-type alkaloids are of general interest among iminosugar researchers. Their selective micromolar α-glycosidase inhibitory ranges (10 – 100 µM) suggest that these azasugars are potential leads for treating type II diabetes. However, the structures of hyacinthacine C1, C3 and C4 are insecure with hyacinthacine C5 being recently corrected. Objective: This review presents the hyacinthacine C-type alkaloids: their first discovery to the most recent advancements on the structures, biological activities and total synthesis. Conclusion: The hyacinthacine C-type alkaloids are of exponentially increasing interest and will undoubtedly continue to be reported as synthetic targets. They represent a challenging but rewarding synthetic feat for the community of those interested in accessing biologically active iminosugars. Since 2009, ten total syntheses have been employed towards accessing similarly related products but only three have assessed the glycosidase inhibitory activity of the final products. This suggests the need for an accessible and universal glycosidase inhibitory assay so to accurately determine the structure-activity relationship of how the hyacinthacine C-type alkaloids inhibit specific glycosidases. Confirming the correct structures of the hyacinthacine C-type alkaloids as well as accessing various analogues continues to strengthen the foundation towards a marketable treatment for type II diabetes and other glycosidase related illnesses.
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Affiliation(s)
- Anthony W Carroll
- School of Chemistry, University of Wollongong, Wollongong, New South Wales, Wollongong NSW 2522, Australia
| | - Stephen G Pyne
- School of Chemistry, University of Wollongong, Wollongong, New South Wales, Wollongong NSW 2522, Australia
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15
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Bourebaba L, Bedjou F, Röcken M, Marycz K. Nortropane alkaloids as pharmacological chaperones in the rescue of equine adipose-derived mesenchymal stromal stem cells affected by metabolic syndrome through mitochondrial potentiation, endoplasmic reticulum stress mitigation and insulin resistance alleviation. Stem Cell Res Ther 2019; 10:178. [PMID: 31215461 PMCID: PMC6582509 DOI: 10.1186/s13287-019-1292-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Revised: 05/20/2019] [Accepted: 05/31/2019] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES Equine metabolic syndrome (EMS) refers to a cluster of associated abnormalities and metabolic disorders, including insulin resistance and adiposity. The numerous biological properties of mesenchymal stem cells (MSCs), including self-renewal and multipotency, have been the subject of many in-depth studies, for the management of EMS; however, it has been shown that this cell type may be affected by the condition, impairing thus seriously their therapeutic potential. Therefore, an attempt to rescue EMS adipose-derived stem cells (ASCs) with calystegines (polyhydroxylated alkaloids) that are endowed with strong antioxidant and antidiabetic abilities was performed. METHODS ASCs isolated from EMS horses were subsequently treated with various concentrations of total calystegines. Different parameters were then assessed using flow cytometry, confocal as well as SE microscopy, and RT-qPCR. RESULTS Our results clearly demonstrated that calystegines could improve EqASC viability and proliferation and significantly reduce apoptosis, via improvement of mitochondrial potentiation and functionality, regulation of pro- and anti-apoptotic pathways, and suppression of ER stress. Furthermore, nortropanes positively upregulated GLUT4 and IRS transcripts, indicating a possible sensitizing or mimetic effect to insulin. Most interesting finding in this investigation lies in the modulatory effect of autophagy, a process that allows the maintenance of cellular homeostasis; calystegines acted as pharmacological chaperones to promote cell survival. CONCLUSION Obtained data open new perspectives in the development of new drugs, which may improve the metabolic dynamics of cells challenged by MS.
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Affiliation(s)
- Lynda Bourebaba
- Department of Experimental Biology, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Norwida 27B, 50-375, Wrocław, Poland. .,International Institute of Translational Medicine, Jesionowa, 11, Malin, 55-114, Wisznia Mała, Poland.
| | - Fatiha Bedjou
- Laboratoire de Biotechnologies végétales et d'Ethnobotanique, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, 06000, Bejaia, Algeria
| | - Michael Röcken
- Faculty of Veterinary Medicine, Equine Clinic - Equine Surgery, Justus-Liebig-University, 35392, Gießen, Germany
| | - Krzysztof Marycz
- Department of Experimental Biology, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Norwida 27B, 50-375, Wrocław, Poland. .,Faculty of Veterinary Medicine, Equine Clinic - Equine Surgery, Justus-Liebig-University, 35392, Gießen, Germany. .,International Institute of Translational Medicine, Jesionowa, 11, Malin, 55-114, Wisznia Mała, Poland.
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16
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Martínez RF, Jenkinson SF, Nakagawa S, Kato A, Wormald MR, Fleet GWJ, Hollinshead J, Nash RJ. Isolation from Stevia rebaudiana of DMDP acetic acid, a novel iminosugar amino acid: synthesis and glycosidase inhibition profile of glycine and β-alanine pyrrolidine amino acids. Amino Acids 2019; 51:991-998. [PMID: 31079215 DOI: 10.1007/s00726-019-02730-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 03/21/2019] [Indexed: 11/27/2022]
Abstract
DMDP acetic acid [N-carboxymethyl-2,5-dideoxy-2,5-imino-D-mannitol] 5 from Stevia rebaudiana is the first isolated natural amino acid derived from iminosugars bearing an N-alkyl acid side chain; it is clear from GCMS studies that such derivatives with acetic and propionic acids are common in a broad range of plants including mulberry, Baphia, and English bluebells, but that they are very difficult to purify. Reaction of unprotected pyrrolidine iminosugars with aqueous glyoxal gives the corresponding N-acetic acids in very high yield; Michael addition of both pyrrolidine and piperidine iminosugars and that of polyhydroxylated prolines to tert-butyl acrylate give the corresponding N-propionic acids in which the amino group of β-alanine is incorporated into the heterocyclic ring. These easy syntheses allow the identification of this new class of amino acid in plant extracts and provide pure samples for biological evaluation. DMDP N-acetic and propionic acids are potent α-galactosidase inhibitors in contrast to potent β-galactosidase inhibition by DMDP.
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Affiliation(s)
- R Fernando Martínez
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK
- Departamento de Química Orgánica e Inorgánica, Facultad de Ciencias-UEX, IACYS-Unidad de Química Verde y Desarrollo Sostenible, 06006, Badajoz, Spain
| | - Sarah F Jenkinson
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Shinpei Nakagawa
- 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.
| | - Mark R Wormald
- Glycobiology Institute, Department of Biochemistry, University of Oxford, Oxford, OX1 3QU, UK
| | - George W J Fleet
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Jackie Hollinshead
- Phytoquest Limited, IBERS, Plas Gogerddan, Aberystwyth, SY23 3EB, Ceredigion, Wales, UK
| | - Robert J Nash
- Phytoquest Limited, IBERS, Plas Gogerddan, Aberystwyth, SY23 3EB, Ceredigion, Wales, UK.
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17
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Ferhati X, Matassini C, Fabbrini MG, Goti A, Morrone A, Cardona F, Moreno-Vargas AJ, Paoli P. Dual targeting of PTP1B and glucosidases with new bifunctional iminosugar inhibitors to address type 2 diabetes. Bioorg Chem 2019; 87:534-549. [PMID: 30928876 DOI: 10.1016/j.bioorg.2019.03.053] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/04/2019] [Accepted: 03/18/2019] [Indexed: 10/27/2022]
Abstract
The diffusion of type 2 diabetes (T2D) throughout the world represents one of the most important health problems of this century. Patients suffering from this disease can currently be treated with numerous oral anti-hyperglycaemic drugs, but none is capable of reproducing the physiological action of insulin and, in several cases, they induce severe side effects. Developing new anti-diabetic drugs remains one of the most urgent challenges of the pharmaceutical industry. Multi-target drugs could offer new therapeutic opportunities for the treatment of T2D, and the reported data on type 2 diabetic mice models indicate that these drugs could be more effective and have fewer side effects than mono-target drugs. α-Glucosidases and Protein Tyrosine Phosphatase 1B (PTP1B) are considered important targets for the treatment of T2D: the first digest oligo- and disaccharides in the gut, while the latter regulates the insulin-signaling pathway. With the aim of generating new drugs able to target both enzymes, we synthesized a series of bifunctional compounds bearing both a nitro aromatic group and an iminosugar moiety. The results of tests carried out both in vitro and in a cell-based model, show that these bifunctional compounds maintain activity on both target enzymes and, more importantly, show a good insulin-mimetic activity, increasing phosphorylation levels of Akt in the absence of insulin stimulation. These compounds could be used to develop a new generation of anti-hyperglycemic drugs useful for the treatment of patients affected by T2D.
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Affiliation(s)
- Xhenti Ferhati
- Department of Chemistry 'Ugo Schiff', University of Firenze, via della Lastruccia 3-13, Sesto Fiorentino, (FI), Italy
| | - Camilla Matassini
- Department of Chemistry 'Ugo Schiff', University of Firenze, via della Lastruccia 3-13, Sesto Fiorentino, (FI), Italy
| | - Maria Giulia Fabbrini
- Department of Chemistry 'Ugo Schiff', University of Firenze, via della Lastruccia 3-13, Sesto Fiorentino, (FI), Italy
| | - Andrea Goti
- Department of Chemistry 'Ugo Schiff', University of Firenze, via della Lastruccia 3-13, Sesto Fiorentino, (FI), Italy; Associated with Consorzio Interuniversitario Nazionale di ricerca in Metodologie e Processi Innovativi di Sintesi (CINMPIS), Italy
| | - Amelia Morrone
- Paediatric Neurology Unit and Laboratories, Neuroscience Department, Meyer Children's Hospital, and Department of Neurosciences, Pharmacology and Child Health. University of Florence, Viale Pieraccini n. 24, 50139 Firenze, Italy
| | - Francesca Cardona
- Department of Chemistry 'Ugo Schiff', University of Firenze, via della Lastruccia 3-13, Sesto Fiorentino, (FI), Italy; Associated with Consorzio Interuniversitario Nazionale di ricerca in Metodologie e Processi Innovativi di Sintesi (CINMPIS), Italy.
| | - Antonio J Moreno-Vargas
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, n/Prof. García González 1, E-41012 Sevilla, Spain
| | - Paolo Paoli
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale Morgagni 50, 50134 Florence, Italy.
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18
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Martínez-Bailén M, Carmona AT, Patterson-Orazem AC, Lieberman RL, Ide D, Kubo M, Kato A, Robina I, Moreno-Vargas AJ. Exploring substituent diversity on pyrrolidine-aryltriazole iminosugars: Structural basis of β-glucocerebrosidase inhibition. Bioorg Chem 2019; 86:652-64. [PMID: 30825709 DOI: 10.1016/j.bioorg.2019.02.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 02/05/2019] [Accepted: 02/09/2019] [Indexed: 01/03/2023]
Abstract
The synthesis of a library of pyrrolidine-aryltriazole hybrids through CuAAC between two epimeric dihydroxylated azidomethylpyrrolidines and differently substituted phenylacetylenes is reported. The evaluation of the new compounds as inhibitors of lysosomal β-glucocerebrosidase showed the importance of the substitution pattern of the phenyl moiety in the inhibition. Crystallization and docking studies revealed key interactions of the pyrrolidine motif with aminoacid residues of the catalytic site while the aryltriazole moiety extended along a hydrophobic surface groove. Some of these compounds were able to increase the enzyme activity in Gaucher patient fibroblasts, acting as a new type of chemical chaperone for Gaucher disease.
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Wills SS, Raston CL, Stubbs KA. Integrating thin film microfluidics in developing a concise synthesis of DGJNAc: A potent inhibitor of α-N-acetylgalctosaminidases. Bioorg Med Chem Lett 2018; 28:3748-51. [PMID: 30366618 DOI: 10.1016/j.bmcl.2018.10.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 10/08/2018] [Accepted: 10/10/2018] [Indexed: 11/23/2022]
Abstract
A simple synthesis, which utilizes a thin film microfluidic reactor for a problematic step, of a potent inhibitor of α-N-acetylhexosaminidases, DGJNAc, has been developed.
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20
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Carmona AT, Carrión-Jiménez S, Pingitore V, Moreno-Clavijo E, Robina I, Moreno-Vargas AJ. Harnessing pyrrolidine iminosugars into dimeric structures for the rapid discovery of divalent glycosidase inhibitors. Eur J Med Chem 2018; 151:765-776. [PMID: 29674295 DOI: 10.1016/j.ejmech.2018.04.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 03/12/2018] [Accepted: 04/03/2018] [Indexed: 11/29/2022]
Abstract
The synthesis of three libraries (1a-l, 1a'-l' and 2a-l) of dimeric iminosugars through CuAAC reaction between three different alkynyl pyrrolidines and a set of diazides was carried out. The resulting crude dimers were screened in situ against two α-fucosidases (libraries 1a-l and 1a'-l') and one β-galactosidase (2a-l). This method is pioneer in the search of divalent glycosidase inhibitors. It has allowed the rapid identification of dimer 1i as the best inhibitor of α-fucosidases from bovine kidney (Ki = 0.15 nM) and Homo sapiens (Ki = 60 nM), and dimer 2e as the best inhibitor of β-galactosidase from bovine liver (Ki = 5.8 μM). In order to evaluate a possible divalent effect in the inhibition, the synthesis and biological analysis of the reference monomers were also performed. Divalent effect was only detected in the inhibition of bovine liver β-galactosidase by dimer 2e.
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Affiliation(s)
- Ana T Carmona
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, C/ Prof. García González, 1, 41012, Seville, Spain
| | - Sebastián Carrión-Jiménez
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, C/ Prof. García González, 1, 41012, Seville, Spain
| | - Valeria Pingitore
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, C/ Prof. García González, 1, 41012, Seville, Spain
| | - Elena Moreno-Clavijo
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, C/ Prof. García González, 1, 41012, Seville, Spain
| | - Inmaculada Robina
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, C/ Prof. García González, 1, 41012, Seville, Spain
| | - Antonio J Moreno-Vargas
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, C/ Prof. García González, 1, 41012, Seville, Spain.
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21
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Han W, Chen X, Yu H, Chen L, Shen M. Seasonal variations of iminosugars in mulberry leaves detected by hydrophilic interaction chromatography coupled with tandem mass spectrometry. Food Chem 2018; 251:110-114. [PMID: 29426416 DOI: 10.1016/j.foodchem.2018.01.058] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 01/04/2018] [Accepted: 01/06/2018] [Indexed: 10/18/2022]
Abstract
A rapid, sensitive, and validated method was developed for the simultaneous determination of four iminosugars, 1-deoxynojirimycin (DNJ), d-fagomine (FAG), 2-O-a-d-galactopyranosyl-DNJ (Gal-DNJ), and 4-O-β-d-glucopyranosyl-fagomine (Glu-FAG), in mulberry leaves. The method used hydrophilic interaction chromatography coupled with tandem mass spectrometry. Based on this method, the seasonal variations of iminosugars in the leaves of different mulberry species (Morus alba, Morus multicaulis Perr, Morus atropurpurea Roxb. and Morus wittiorum Hand-Mazz.) collected in Guangzhou, China, during 10 consecutive months in 2013 were investigated. The results indicated that the maximum content of DNJ in the leaves of all four species occurred in summer (June or July). The highest FAG level was found in spring (April or May). The highest levels of Gal-DNJ and Glu-FAG were recorded in autumn (September or October).
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Affiliation(s)
- Weili Han
- Hygiene Detection Center, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China
| | - Xiangxiang Chen
- Hygiene Detection Center, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China
| | - Huimin Yu
- Hygiene Detection Center, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China
| | - Lingyun Chen
- Hygiene Detection Center, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China
| | - Mei Shen
- Hygiene Detection Center, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China.
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22
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Lawande PP, Sontakke VA, Kumbhar NM, Bhagwat TR, Ghosh S, Shinde VS. Polyhydroxylated azetidine iminosugars: Synthesis, glycosidase inhibitory activity and molecular docking studies. Bioorg Med Chem Lett 2017; 27:5291-5295. [PMID: 29074258 DOI: 10.1016/j.bmcl.2017.10.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 10/11/2017] [Accepted: 10/12/2017] [Indexed: 11/28/2022]
Abstract
An efficient and practical strategy for the synthesis of unknown azetidine iminosugars (2S,3R,4S)-2-((R)-1,2-dihydroxyethyl)-3-hydroxy-4-(hydroxymethyl)azetidine 2, (2S,3r,4R)-3-hydroxy-2,4-bis(hydroxymethyl)azetidine 3 and (2S,3R,4S)-3-hydroxy-4-(hydroxymethyl)-N-methylazetidine-2-carboxylic acid 4, starting from the d-glucose has been reported. The methodology involves preparation of the 3-amino-N-benzyloxycarbonyl-3-deoxy-6-O-tert-butyldimethylsillyl-1,2-O-isopropylidene-α-d-glucofuranose 9, which was converted to the C-5-OMs derivative 11. Intramolecular nucleophilic displacement of the C-5-OMs group with in situ generated 3-amino functionality provided the required key azetidine ring skeletons 10 with additional hydroxymethyl group. Removal of 1,2-acetonide protection, followed by reduction and hydrogenolysis afforded azetidine iminosugar 2. Alternatively, removal of 1,2-acetonide group and chopping of C1-anomeric carbon gave C2-aldehyde that on reduction or oxidation followed by hydrogenolysis gave 2,4-bis(hydroxymethyl) azetidine iminosugars 3 and N-methylazetidine-2-carboxylic acid 4 respectively. The glycosidase inhibitory activity of 2-4 iminosugars was screened against various glycosidase enzymes and compared with a standard miglitol. Amongst synthesized targets, the compound 2 was found to be more potent amyloglucosidase inhibitor than miglitol. These results were supported by molecular docking studies.
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Affiliation(s)
- Pravin P Lawande
- Department of Chemistry, Savitribai Phule Pune University (Formerly, University of Pune), Pune 411007, India
| | - Vyankat A Sontakke
- Department of Chemistry, Savitribai Phule Pune University (Formerly, University of Pune), Pune 411007, India
| | - Navanath M Kumbhar
- Department of Chemistry, Savitribai Phule Pune University (Formerly, University of Pune), Pune 411007, India
| | - Tanay R Bhagwat
- Department of Microbiology, Modern College of Arts, Science and Commerce, Savitribai Phule Pune University, Ganeshkhind, Pune 411016, India
| | - Sougata Ghosh
- Department of Microbiology, Modern College of Arts, Science and Commerce, Savitribai Phule Pune University, Ganeshkhind, Pune 411016, India
| | - Vaishali S Shinde
- Department of Chemistry, Savitribai Phule Pune University (Formerly, University of Pune), Pune 411007, India.
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Front S, Biela-Banaś A, Burda P, Ballhausen D, Higaki K, Caciotti A, Morrone A, Charollais-Thoenig J, Gallienne E, Demotz S, Martin OR. (5aR)-5a-C-Pentyl-4-epi-isofagomine: A powerful inhibitor of lysosomal β-galactosidase and a remarkable chaperone for mutations associated with GM1-gangliosidosis and Morquio disease type B. Eur J Med Chem 2016; 126:160-170. [PMID: 27750150 DOI: 10.1016/j.ejmech.2016.09.095] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 09/26/2016] [Accepted: 09/29/2016] [Indexed: 12/14/2022]
Abstract
This report is about the identification, synthesis and initial biological characterization of derivatives of 4-epi-isofagomine as pharmacological chaperones (PC) for human lysosomal β-galactosidase. The two epimers of 4-epi-isofagomine carrying a pentyl group at C-5a, namely (5aR)- and (5aS)-5a-C-pentyl-4-epi-isofagomine, were prepared by an innovative procedure involving in the key step the addition of nitrohexane to a keto-pentopyranoside. Both epimers were evaluated as inhibitors of the human β-galactosidase: the (5aR)-stereoisomer (compound 1) was found to be a very potent inhibitor of the enzyme (IC50 = 8 nM, 30× more potent than 4-epi-isofagomine at pH 7.3) with a high selectivity for this glycosidase whereas the (5aS) epimer was a much weaker inhibitor. In addition, compound 1 showed a remarkable activity as a PC. It significantly enhanced the residual activity of mutant β-galactosidase in 15 patient cell lines out of 23, with enhancement factors greater than 3.5 in 10 cell lines and activity restoration up to 91% of normal. Altogether, these results indicated that (5aR)-5a-C-pentyl-4-epi-isofagomine constitutes a promising PC-based drug candidate for the treatment of GM1-gangliosidosis and Morquio disease type B.
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Affiliation(s)
- Sophie Front
- Université d'Orléans & CNRS, Institut de Chimie Organique et Analytique (ICOA), UMR 7311, Rue de Chartres, 45067 Orléans, France
| | - Anna Biela-Banaś
- Université d'Orléans & CNRS, Institut de Chimie Organique et Analytique (ICOA), UMR 7311, Rue de Chartres, 45067 Orléans, France
| | - Patricie Burda
- Division of Metabolism and Children's Research Center, University Children's Hospital Zürich, Zürich, Switzerland
| | - Diana Ballhausen
- Center for Molecular Diseases, Lausanne University Hospital, 1005 Lausanne, Switzerland
| | - Katsumi Higaki
- Division of Functional Genomics, Research Center for Bioscience and Technology, Tottori University, Yonago, Japan
| | - Anna Caciotti
- Neuroscience, Psychology, Pharmacology and Child Health Department, University of Florence, 50139 Florence, Italy
| | - Amelia Morrone
- Neuroscience, Psychology, Pharmacology and Child Health Department, University of Florence, 50139 Florence, Italy; Molecular and Cell Biology Laboratory, Paediatric Neurology Unit and Laboratories, Neuroscience Department, Meyer Children's Hospital, 50139 Florence, Italy
| | | | - Estelle Gallienne
- Université d'Orléans & CNRS, Institut de Chimie Organique et Analytique (ICOA), UMR 7311, Rue de Chartres, 45067 Orléans, France
| | | | - Olivier R Martin
- Université d'Orléans & CNRS, Institut de Chimie Organique et Analytique (ICOA), UMR 7311, Rue de Chartres, 45067 Orléans, France.
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Rodríguez-Sánchez S, Martín-Ortiz A, Carrero-Carralero C, Ramos S, Sanz ML, Soria AC. Pressurized liquid extraction of Aglaonema sp. iminosugars: Chemical composition, bioactivity, cell viability and thermal stability. Food Chem 2016; 204:62-9. [PMID: 26988476 DOI: 10.1016/j.foodchem.2016.02.091] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 01/09/2016] [Accepted: 02/13/2016] [Indexed: 11/23/2022]
Abstract
Pressurized liquid extraction of Aglaonema sp. iminosugars has been optimized. A single cycle under optimal conditions (80mg, 100°C, 2min) was enough to extract ⩾96% of most iminosugars. Further incubation with Saccharomyces cerevisiae for 5h removed coextracted interfering low molecular weight carbohydrates from extracts of different Aglaonema cultivars. A complete characterization of these extracts was carried out by gas chromatography-mass spectrometry: three iminosugars were tentatively identified for the first time; α-homonojirimycin and 2,5-dideoxy-2,5-imino-d-mannitol were the major iminosugars determined. α-Glucosidase inhibition activity, cell viability and thermal stability of Aglaonema extracts were also evaluated. Extracts with IC50 for α-glucosidase activity in the 0.010-0.079mgmL(-1) range showed no decrease of Caco-2 cell viability at concentrations lower than 125μgmL(-1) and were stable at 50°C for 30days. These results highlight the potential of Aglaonema extracts as a source of bioactives to be used as functional ingredients.
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Hurtaux T, Sfihi-Loualia G, Brissonnet Y, Bouckaert J, Mallet JM, Sendid B, Delplace F, Fabre E, Gouin SG, Guérardel Y. Evaluation of monovalent and multivalent iminosugars to modulate Candida albicans β-1,2-mannosyltransferase activities. Carbohydr Res 2016; 429:123-7. [PMID: 26852253 DOI: 10.1016/j.carres.2016.01.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 01/15/2016] [Accepted: 01/16/2016] [Indexed: 11/30/2022]
Abstract
β-1,2-Linked oligomannosides substitute the cell wall of numerous yeast species. Several of those including Candida albicans may cause severe infections associated with high rates of morbidity and mortality, especially in immunocompromised patients. β-1,2-Mannosides are known to be involved in the pathogenic process and to elicit an immune response from the host. In C. albicans, the synthesis of β-mannosides is under the control of a family of nine genes coding for putative β-mannosyltransferases. Two of them, CaBmt1 and CaBmt3, have been shown to initiate and prime the elongation of the β-mannosides on the cell-wall mannan core. In the present study, we have assessed the modulating activities of monovalent and multivalent iminosugar analogs on these enzymes in order to control the enzymatic bio-synthesis of β-mannosides. We have identified a monovalent deoxynojirimycin (DNJ) derivative that inhibits the CaBmt1-catalyzed initiating activity, and mono-, tetra- and polyvalent deoxymannojirimycin (DMJ) that modulate the CaBmt1 activity toward the formation of a single major product. Analysis of the aggregating properties of the multivalent iminosugars showed their ability to elicit clusterization of both CaBmt1 and CaBmt3, without affecting their activity. These results suggest promising roles for multivalent iminosugars as controlling agents for the biosynthesis of β-1,2 mannosides and for monovalent DNJ derivative as a first target for the design of future β-mannosyltransferase inhibitors.
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Affiliation(s)
- Thomas Hurtaux
- UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ. Lille, CNRS, F 59000 Lille, France; CHU Lille, U995-LIRIC-Lille Inflammation Research International Center, Inserm, F-59000 Lille, France
| | - Ghenima Sfihi-Loualia
- UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ. Lille, CNRS, F 59000 Lille, France
| | - Yoan Brissonnet
- CEISAM, Chimie Et Interdisciplinarité, Synthèse, Analyse, Modélisation, LUNAM Université, UMR CNRS 6230, UFR des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Julie Bouckaert
- UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ. Lille, CNRS, F 59000 Lille, France
| | - Jean-Maurice Mallet
- Département de Chimie, Sorbonne Universités-UPMC Univ Paris 06, École Normale Supérieure-PSL Research University, CNRS UMR 7203 LBM, 24, rue Lhomond, 75005 Paris, France
| | - Boualem Sendid
- CHU Lille, U995-LIRIC-Lille Inflammation Research International Center, Inserm, F-59000 Lille, France
| | - Florence Delplace
- UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ. Lille, CNRS, F 59000 Lille, France
| | - Emeline Fabre
- UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ. Lille, CNRS, F 59000 Lille, France
| | - Sébastien G Gouin
- CEISAM, Chimie Et Interdisciplinarité, Synthèse, Analyse, Modélisation, LUNAM Université, UMR CNRS 6230, UFR des Sciences et des Techniques, 2 rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
| | - Yann Guérardel
- UMR 8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Univ. Lille, CNRS, F 59000 Lille, France.
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26
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Kite GC, Cardoso D, Lewis GP, Zartman CE, de Queiroz LP, Veitch NC. Monomethyl ethers of 4,5-dihydroxypipecolic acid from Petaladenium urceoliferum: Enigmatic chemistry of an enigmatic legume. Phytochemistry 2015; 116:198-202. [PMID: 25817832 DOI: 10.1016/j.phytochem.2015.02.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 02/18/2015] [Accepted: 02/26/2015] [Indexed: 06/04/2023]
Abstract
Leaves of Petaladenium (Leguminosae), an Amazonian monospecific genus recently revealed as a member of the Amburaneae clade among the earliest-diverging papilionoid legumes, were found to accumulate three monomethyl ethers of 4,5-dihydroxypipecolic acids. These were characterised by spectroscopic means as the (2S,4S,5R) and (2S,4R,5S) epimers of 5-hydroxy-4-methoxypipecolic acid and (2S,4R,5R)-4-hydroxy-5-methoxypipecolic acid. These compounds were not detected in any other genera in the Amburaneae clade or the wider Angylocalyceae-Dipterygeae-Amburaneae (ADA) clade of papilionoid legumes. Hydroxypipecolic acids, however, were detected in leaves of Myrocarpus and Myroxylon (sister genera in the Amburaneae clade), Angylocalyx and Xanthocercis (sister genera in the Angylocalyceae clade) and Monopteryx (Dipterygeae clade), and were also present in Petaladenium. Iminosugars, known to be accumulated by all four genera in the Angylocalyceae clade (Alexa, Angylocalyx, Castanospermum and Xanthocercis), were found to be characteristic of this group within the ADA clade.
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Affiliation(s)
| | - Domingos Cardoso
- Departamento de Botânica, Instituto de Biologia, Universidade Federal da Bahia, Rua Barão de Geremoabo, s/n, Campus Universitário de Ondina, 40170-115 Salvador, Bahia, Brazil; Programa de Pós-Graduação em Botânica (PPGBot), Universidade Estadual de Feira de Santana, Av. Transnordestina, s/n, Novo Horizonte, 44036-900 Feira de Santana, Bahia, Brazil
| | - Gwilym P Lewis
- Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, UK
| | - Charles E Zartman
- Department of Biodiversity, Instituto Nacional de Pesquisas da Amazônia (INPA), Av. André Araújo, 2936, Petrópolis, 69060-001 Manaus, Amazonas, Brazil
| | - Luciano Paganucci de Queiroz
- Programa de Pós-Graduação em Botânica (PPGBot), Universidade Estadual de Feira de Santana, Av. Transnordestina, s/n, Novo Horizonte, 44036-900 Feira de Santana, Bahia, Brazil
| | - Nigel C Veitch
- Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AB, UK
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Gossan DPA, Alabdul Magid A, Kouassi-Yao PA, Behr JB, Ahibo AC, Djakouré LA, Harakat D, Voutquenne-Nazabadioko L. Glycosidase inhibitors from the roots of Glyphaea brevis. Phytochemistry 2015; 109:76-83. [PMID: 25468536 DOI: 10.1016/j.phytochem.2014.10.029] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 10/20/2014] [Accepted: 10/23/2014] [Indexed: 06/04/2023]
Abstract
Ten phenylalkyl-substituted iminosugars (1-10) and a cinnamic acid derived glucoside (11) were isolated from the roots of Glyphaea brevis (Malvaceae). Their structures were elucidated by 1D and 2D NMR analysis, as well as by HR-ESIMS. Compounds 1-10 retain an unprecedented structure composed of an iminosugar-like core identified as 1-deoxyfuconojirimycin in glyphaeaside A1-A4 (1, 2, 5, 6), 1-deoxygalactonojirimycin in glyphaeaside B1-B5 (3, 4, 7-9) or 1-deoxynojirimycin in glyphaeaside C (10), substituted by a β-d-glucopyranose in compounds 2, 4, 6 and 9. These compounds feature a di-, tri- or tetra-hydroxylated nine-carbon chain at the pseudo-anomeric position, substituted by a terminal phenyl group. All alkyl C-iminosugars displayed potent and selective inhibition towards β-glucosidase with IC50 values ranging from 0.15 to 68μM. Compound 10 with an 1-deoxynojirimycin backbone was the most active and was found to act as a competitive inhibitor with Ki=31nM, therefore emerging as one of the most potent inhibitor of β-glucosidase reported to date. Inhibition of β-mannosidase was observed with compounds 1, 3, 7 and 10, but only weak inhibition could be detected with the alkyl-C-iminosugars on the other tested glycosidases (α-glucosidase, α-fucosidase, α- and β-galactosidase).
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Affiliation(s)
- Diane Patricia Apie Gossan
- ICMR-UMR CNRS 7312, Groupe Isolement et Structure, Campus Sciences, Bat. 18, BP 1039, 51687 Reims Cedex 2, France; Laboratoire de Chimie Organique Biologique, 01 BPV 34 Abidjan 01, Université Félix-Houphouët Boigny d'Abidjan-Cocody, Côte d'Ivoire
| | - Abdulmagid Alabdul Magid
- ICMR-UMR CNRS 7312, Groupe Isolement et Structure, Campus Sciences, Bat. 18, BP 1039, 51687 Reims Cedex 2, France.
| | - Philomène Akoua Kouassi-Yao
- Laboratoire de Chimie Organique Biologique, 01 BPV 34 Abidjan 01, Université Félix-Houphouët Boigny d'Abidjan-Cocody, Côte d'Ivoire
| | - Jean-Bernard Behr
- Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims (ICMR), CNRS UMR 7312, UFR Sciences Exactes et Naturelles, BP 1039, 51687 Reims Cedex 2, France
| | - Antoine Coffy Ahibo
- Laboratoire de Chimie Organique Biologique, 01 BPV 34 Abidjan 01, Université Félix-Houphouët Boigny d'Abidjan-Cocody, Côte d'Ivoire
| | - Léon Atoutou Djakouré
- Laboratoire de Chimie Organique Biologique, 01 BPV 34 Abidjan 01, Université Félix-Houphouët Boigny d'Abidjan-Cocody, Côte d'Ivoire
| | - Dominique Harakat
- Service Commun d'Analyses, Institut de Chimie Moléculaire de Reims (ICMR), CNRS UMR 7312, Bat. 18, BP 1039, 51687 Reims Cedex 2, France
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Decroocq C, Stauffert F, Pamlard O, Oulaïdi F, Gallienne E, Martin OR, Guillou C, Compain P. Iminosugars as a new class of cholinesterase inhibitors. Bioorg Med Chem Lett 2014; 25:830-3. [PMID: 25597004 DOI: 10.1016/j.bmcl.2014.12.071] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 12/18/2014] [Accepted: 12/19/2014] [Indexed: 12/21/2022]
Abstract
To further extend the scope of iminosugar biological activity, a systematic structure-activity relationship investigation has been performed by synthesizing and evaluating as cholinesterase inhibitors a library of twenty-three iminoalditols with different substitutions and stereochemistry patterns. These compounds have been evaluated in vitro for the inhibition of cholinesterases (different sources of acetylcholinesterase and butyrylcholinesterase). Some compounds have IC50 values in the micromolar range and display significant inhibition selectivity for butyrylcholinesterase over acetylcholinesterase. These are the first examples of iminosugar-based inhibitors of cholinesterases.
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Affiliation(s)
- Camille Decroocq
- Laboratoire de Synthèse Organique et Molécules Bioactives, Université de Strasbourg/CNRS (UMR 7509), Ecole Européenne de Chimie, Polymères et Matériaux, 25 rue Becquerel, 67087 Strasbourg, France
| | - Fabien Stauffert
- Laboratoire de Synthèse Organique et Molécules Bioactives, Université de Strasbourg/CNRS (UMR 7509), Ecole Européenne de Chimie, Polymères et Matériaux, 25 rue Becquerel, 67087 Strasbourg, France
| | - Olivier Pamlard
- ICSN-CNRS (Bat. 27)-LabEx LERMIT, 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France
| | - Farah Oulaïdi
- ICOA, UMR 7311, Université d'Orléans et CNRS, rue de Chartres, BP 6759, 45067 Orléans, France
| | - Estelle Gallienne
- ICOA, UMR 7311, Université d'Orléans et CNRS, rue de Chartres, BP 6759, 45067 Orléans, France
| | - Olivier R Martin
- ICOA, UMR 7311, Université d'Orléans et CNRS, rue de Chartres, BP 6759, 45067 Orléans, France
| | - Catherine Guillou
- ICSN-CNRS (Bat. 27)-LabEx LERMIT, 1, Avenue de la Terrasse, 91198 Gif-sur-Yvette Cedex, France.
| | - Philippe Compain
- Laboratoire de Synthèse Organique et Molécules Bioactives, Université de Strasbourg/CNRS (UMR 7509), Ecole Européenne de Chimie, Polymères et Matériaux, 25 rue Becquerel, 67087 Strasbourg, France; Institut Universitaire de France, 103 Bd Saint-Michel, 75005 Paris, France.
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