1
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Tang YX, Zhou Y, Wu HX, Wang LS, Wu CY, Zhuang SY, Wu AX. N-Benzylhydroxylamine as a novel synthetic block in "C1N1" embedding reaction via α-C(sp 3)-H activation strategy. Chem Commun (Camb) 2024. [PMID: 38904415 DOI: 10.1039/d4cc02105c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
A novel process using N-benzylhydroxylamine hydrochloride as a "C1N1 synthon" in [2+2+1] cyclization for the construction of 1,2,5-trisubstituted imidazoles has been described for the first time. The key to realizing this process lies in capturing arylamines by in situ generated novel acyl ketonitrone intermediates. Subsequent tautomerization activates the α-C(sp3)-H of N-benzylhydroxylamines, and thus breaks through its inherent reaction mode and achieves N, α-C site-selective cyclization. Furthermore, this method enables scale-up synthesis and late-stage modification of complex molecules.
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Affiliation(s)
- Yong-Xing Tang
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - You Zhou
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Hao-Xuan Wu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Li-Sheng Wang
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Chun-Yan Wu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Shi-Yi Zhuang
- Key Laboratory of Specialty Agri-product Quality and Hazard Controlling Technology of Zhejiang Province, College of Life Sciences, China Jiliang University, Hangzhou 310018, P. R. China.
| | - An-Xin Wu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
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2
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Borie-Guichot M, Lan Tran M, Garcia V, Oukhrib A, Rodriguez F, Turrin CO, Levade T, Génisson Y, Ballereau S, Dehoux C. Multivalent pyrrolidines acting as pharmacological chaperones against Gaucher disease. Bioorg Chem 2024; 146:107295. [PMID: 38513326 DOI: 10.1016/j.bioorg.2024.107295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 03/14/2024] [Accepted: 03/15/2024] [Indexed: 03/23/2024]
Abstract
A concise asymmetric synthesis of clickable enantiomeric pyrrolidines was achieved using Crabbé-Ma allenation. The synthesized iminosugars were grafted by copper-free strain-promoted alkyne-azide cycloaddition onto phosphorus dendrimers. The hexavalent and dodecavalent pyrrolidines were evaluated as β-glucocerebrosidase inhibitors. The level of inhibition suggests that monofluorocyclooctatriazole group may contribute to the affinity for the protein leading to potent multivalent inhibitors. Docking studies were carried out to rationalize these results. Then, the iminosugars clusters were evaluated as pharmacological chaperones in Gaucher patients' fibroblasts. An increase in β-glucocerebrosidase activity was observed with hexavalent and dodecavalent pyrrolidines at concentrations as low as 1 µM and 0.1 µM, respectively. These iminosugar clusters constitute the first example of multivalent pyrrolidines acting as pharmacological chaperones against Gaucher disease.
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Affiliation(s)
- Marc Borie-Guichot
- Université Paul Sabatier-Toulouse III CNRS SPCMIB, UMR5068, 118 Route de Narbonne, F-31062 Toulouse, France
| | - My Lan Tran
- Université Paul Sabatier-Toulouse III CNRS SPCMIB, UMR5068, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Virginie Garcia
- Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1037, Centre de Recherches en Cancérologie de Toulouse (CRCT), Université Paul Sabatier, France
| | | | - Frédéric Rodriguez
- Université Paul Sabatier-Toulouse III CNRS SPCMIB, UMR5068, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Cédric-Olivier Turrin
- IMD-Pharma, 205 Route de Narbonne, 31077 Toulouse Cedex 4, France; Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, BP 44099 31077 Toulouse CEDEX 4, France; LCC-CNRS, Université de Toulouse, CNRS 31013 Toulouse CEDEX 6, France
| | - Thierry Levade
- Institut National de la Santé et de la Recherche Médicale (INSERM) UMR1037, Centre de Recherches en Cancérologie de Toulouse (CRCT), Université Paul Sabatier, France; Laboratoire de Biochimie Métabolique, Institut Fédératif de Biologie, CHU Purpan, F-31059 Toulouse, France
| | - Yves Génisson
- Université Paul Sabatier-Toulouse III CNRS SPCMIB, UMR5068, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Stéphanie Ballereau
- Université Paul Sabatier-Toulouse III CNRS SPCMIB, UMR5068, 118 Route de Narbonne, F-31062 Toulouse, France
| | - Cécile Dehoux
- Université Paul Sabatier-Toulouse III CNRS SPCMIB, UMR5068, 118 Route de Narbonne, F-31062 Toulouse, France.
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3
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Davighi MG, Matassini C, Clemente F, Paoli P, Morrone A, Cacciarini M, Goti A, Cardona F. pH-Responsive Trihydroxylated Piperidines Rescue The Glucocerebrosidase Activity in Human Fibroblasts Bearing The Neuronopathic Gaucher-Related L444P/L444P Mutations in GBA1 Gene. Chembiochem 2024; 25:e202300730. [PMID: 37877519 DOI: 10.1002/cbic.202300730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 10/26/2023]
Abstract
Engineering bioactive iminosugars with pH-responsive groups is an emerging approach to develop pharmacological chaperones (PCs) able to improve lysosomal trafficking and enzymatic activity rescue of mutated enzymes. The use of inexpensive l-malic acid allowed introduction of orthoester units into the lipophilic chain of an enantiomerically pure iminosugar affording only two diastereoisomers contrary to previous related studies. The iminosugar was prepared stereoselectively from the chiral pool (d-mannose) and chosen as the lead bioactive compound, to develop novel candidates for restoring the lysosomal enzyme glucocerebrosidase (GCase) activity. The stability of orthoester-appended iminosugars was studied by 1 H NMR spectroscopy both in neutral and acidic environments, and the loss of inhibitory activity with time in acid medium was demonstrated on cell lysates. Moreover, the ability to rescue GCase activity in the lysosomes as the result of a chaperoning effect was explored. A remarkable pharmacological chaperone activity was measured in fibroblasts hosting the homozygous L444P/L444P mutation, a cell line resistant to most PCs, besides the more commonly responding N370S mutation.
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Affiliation(s)
- Maria Giulia Davighi
- Department of Chemistry "Ugo Schiff" (DICUS), University of Florence, Via della Lastruccia 3-13, 50019, Sesto F.no (FI), Italy
- Current address: BioMedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, 1470 Madison Ave, New York, 10029, New York, USA
| | - Camilla Matassini
- Department of Chemistry "Ugo Schiff" (DICUS), University of Florence, Via della Lastruccia 3-13, 50019, Sesto F.no (FI), Italy
| | - Francesca Clemente
- Department of Chemistry "Ugo Schiff" (DICUS), University of Florence, Via della Lastruccia 3-13, 50019, Sesto F.no (FI), Italy
| | - Paolo Paoli
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale Morgagni 50, 50134, Firenze, Italy
| | - Amelia Morrone
- Laboratory of Molecular Biology of Neurometabolic Diseases, Meyer Children's Hospital, IRCCS, Viale Pieraccini 24, 50139, Firenze, Italy
- Department of Neurosciences, Psychology, Drug Research and Child Health, University of Florence, Viale Pieraccini 24, 50139, Firenze, Italy
| | - Martina Cacciarini
- Department of Chemistry "Ugo Schiff" (DICUS), University of Florence, Via della Lastruccia 3-13, 50019, Sesto F.no (FI), Italy
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100, Copenhagen Ø, Denmark
| | - Andrea Goti
- Department of Chemistry "Ugo Schiff" (DICUS), University of Florence, Via della Lastruccia 3-13, 50019, Sesto F.no (FI), Italy
| | - Francesca Cardona
- Department of Chemistry "Ugo Schiff" (DICUS), University of Florence, Via della Lastruccia 3-13, 50019, Sesto F.no (FI), Italy
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4
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De Angelis M, Primitivo L, Sappino C, Centrella B, Lucarini C, Lanciotti L, Petti A, Odore D, D'Annibale A, Macchi B, Stefanizzi V, Cirigliano A, Rinaldi T, Righi G, Ricelli A. Stereocontrolled synthesis of new iminosugar lipophilic derivatives and evaluation of biological activities. Carbohydr Res 2023; 534:108984. [PMID: 37984279 DOI: 10.1016/j.carres.2023.108984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 11/09/2023] [Accepted: 11/09/2023] [Indexed: 11/22/2023]
Abstract
Iminosugars' similarity to carbohydrates determines the exceptional potential for this class of polyhydroxylated alkaloids to serve as potential drug candidates for a wide variety of diseases such as diabetes, lysosomal storage diseases, cancer, bacterial and viral infections. The presence of lipophilic substituents has a significant impact on their biological activities. This work reports the synthesis of three new pyrrolidine lipophilic derivatives O-alkylated in C-6 position. The biological activities of our iminosugars' collection were tested in two cancer cell lines and, due to the pharmaceutical potential, in the model yeast system Saccharomyces cerevisiae to assess their toxicity.
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Affiliation(s)
- Martina De Angelis
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy.
| | - Ludovica Primitivo
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Carla Sappino
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Barbara Centrella
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Claudia Lucarini
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Lucrezia Lanciotti
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Alessia Petti
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Davide Odore
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Andrea D'Annibale
- Department of Chemistry, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Beatrice Macchi
- Department of Chemical Science and Technology, University of Rome "Tor Vergata", Via Cracovia, 50, 00133, Rome, Italy
| | - Valeria Stefanizzi
- Department of Chemical Science and Technology, University of Rome "Tor Vergata", Via Cracovia, 50, 00133, Rome, Italy
| | - Angela Cirigliano
- Institute of Molecular Biology and Pathology (IBPM)-CNR, P.le A. Moro 5, 00185, Rome, Italy
| | - Teresa Rinaldi
- Department of Biology and Biotechnology, "Sapienza" University of Rome, P.le A. Moro 5, 00185, Rome, Italy
| | - Giuliana Righi
- Institute of Molecular Biology and Pathology (IBPM)-CNR, P.le A. Moro 5, 00185, Rome, Italy
| | - Alessandra Ricelli
- Institute of Molecular Biology and Pathology (IBPM)-CNR, P.le A. Moro 5, 00185, Rome, Italy
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5
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Clemente F, Davighi MG, Matassini C, Cardona F, Goti A, Morrone A, Paoli P, Tejero T, Merino P, Cacciarini M. Light-Triggered Control of Glucocerebrosidase Inhibitors: Towards Photoswitchable Pharmacological Chaperones. Chemistry 2023; 29:e202203841. [PMID: 36598148 DOI: 10.1002/chem.202203841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/04/2023] [Accepted: 01/04/2023] [Indexed: 01/05/2023]
Abstract
Piperidine-based photoswitchable derivatives have been developed as putative pharmacological chaperones for glucocerebrosidase (GCase), the defective enzyme in Gaucher disease (GD). The structure-activity study revealed that both the iminosugar and the light-sensitive azobenzene are essential features to exert inhibitory activity towards human GCase and a system with the correct inhibition trend (IC50 of the light-activated form lower than IC50 of the dark form) was identified. Kinetic analyses showed that all compounds are non-competitive inhibitors (mixed or pure) of GCase and the enzyme allosteric site involved in the interaction was identified by means of MD simulations. A moderate activity enhancement of mutant GCase assessed in GD patients' fibroblasts (ex vivo experiments) carrying the most common mutation was recorded. This promising observation paves the way for further studies to improve the benefit of the light-to-dark thermal conversion for chaperoning activity.
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Affiliation(s)
- Francesca Clemente
- Department of Chemistry "U. Schiff", University of Florence, Via della Lastruccia 3-13, 50019, Sesto F.no, FI, Italy
| | - Maria Giulia Davighi
- Department of Chemistry "U. Schiff", University of Florence, Via della Lastruccia 3-13, 50019, Sesto F.no, FI, Italy
| | - Camilla Matassini
- Department of Chemistry "U. Schiff", University of Florence, Via della Lastruccia 3-13, 50019, Sesto F.no, FI, Italy
| | - Francesca Cardona
- Department of Chemistry "U. Schiff", University of Florence, Via della Lastruccia 3-13, 50019, Sesto F.no, FI, Italy.,Associated with LENS, Via N. Carrara 1, 50019, Sesto F.no, FI, Italy
| | - Andrea Goti
- Department of Chemistry "U. Schiff", University of Florence, Via della Lastruccia 3-13, 50019, Sesto F.no, FI, Italy.,Associated with LENS, Via N. Carrara 1, 50019, Sesto F.no, FI, Italy
| | - Amelia Morrone
- Laboratory of Molecular Biology of Neurometabolic Diseases, Neuroscience Department, Meyer Children's Hospital, Viale Pieraccini 24, 50139, Firenze, Italy.,Department of Neurosciences, Psychology, Drug Research and Child Health, University of Florence, Viale Pieraccini 24, 50139, Firenze, Italy
| | - Paolo Paoli
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale Morgagni 50, 50134, Firenze, Italy
| | - Tomás Tejero
- Institute of Chemical Synthesis and Homogeneous Catalysis. (ISQCH), University of Zaragoza, Campus San Francisco, Zaragoza, 50009, Spain
| | - Pedro Merino
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, Campus San Francisco, Zaragoza, 50009, Spain
| | - Martina Cacciarini
- Department of Chemistry "U. Schiff", University of Florence, Via della Lastruccia 3-13, 50019, Sesto F.no, FI, Italy.,Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100, Copenhagen Ø, Denmark
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6
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GCase Enhancers: A Potential Therapeutic Option for Gaucher Disease and Other Neurological Disorders. Pharmaceuticals (Basel) 2022; 15:ph15070823. [PMID: 35890122 PMCID: PMC9325019 DOI: 10.3390/ph15070823] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 06/28/2022] [Accepted: 06/29/2022] [Indexed: 12/07/2022] Open
Abstract
Pharmaceutical chaperones (PCs) are small compounds able to bind and stabilize misfolded proteins, allowing them to recover their native folding and thus their biological activity. In particular, lysosomal storage disorders (LSDs), a class of metabolic disorders due to genetic mutations that result in misfolded lysosomal enzymes, can strongly benefit from the use of PCs able to facilitate their translocation to the lysosomes. This results in a recovery of their catalytic activity. No PC for the GCase enzyme (lysosomal acid-β-glucosidase, or glucocerebrosidase) has reached the market yet, despite the importance of this enzyme not only for Gaucher disease, the most common LSD, but also for neurological disorders, such as Parkinson’s disease. This review aims to describe the efforts made by the scientific community in the last 7 years (since 2015) in order to identify new PCs for the GCase enzyme, which have been mainly identified among glycomimetic-based compounds.
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7
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Clemente F, Martínez-Bailén M, Matassini C, Morrone A, Falliano S, Caciotti A, Paoli P, Goti A, Cardona F. Synthesis of a New β-Galactosidase Inhibitor Displaying Pharmacological Chaperone Properties for GM1 Gangliosidosis. Molecules 2022; 27:molecules27134008. [PMID: 35807262 PMCID: PMC9268699 DOI: 10.3390/molecules27134008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 06/16/2022] [Accepted: 06/17/2022] [Indexed: 11/16/2022] Open
Abstract
GM1 gangliosidosis is a rare lysosomal disease caused by the deficiency of the enzyme β-galactosidase (β-Gal; GLB1; E.C. 3.2.1.23), responsible for the hydrolysis of terminal β-galactosyl residues from GM1 ganglioside, glycoproteins, and glycosaminoglycans, such as keratan-sulfate. With the aim of identifying new pharmacological chaperones for GM1 gangliosidosis, the synthesis of five new trihydroxypiperidine iminosugars is reported in this work. The target compounds feature a pentyl alkyl chain in different positions of the piperidine ring and different absolute configurations of the alkyl chain at C-2 and the hydroxy group at C-3. The organometallic addition of a Grignard reagent onto a carbohydrate-derived nitrone in the presence or absence of a suitable Lewis Acid was exploited, providing structural diversity at C-2, followed by the ring-closure reductive amination step. An oxidation-reduction process allowed access to a different configuration at C-3. The N-pentyl trihydroxypiperidine iminosugar was also synthesized for the purpose of comparison. The biological evaluation of the newly synthesized compounds was performed on leucocyte extracts from healthy donors and identified two suitable β-Gal inhibitors, namely compounds 10 and 12. Among these, compound 12 showed chaperoning properties since it enhanced β-Gal activity by 40% when tested on GM1 patients bearing the p.Ile51Asn/p.Arg201His mutations.
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Affiliation(s)
- Francesca Clemente
- Dipartimento di Chimica “Ugo Schiff” (DICUS), Università di Firenze, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy; (M.M.-B.); (C.M.); (A.G.)
- Correspondence: (F.C.); (F.C.); Tel.: +39-055-4573453 (F.C.); +39-055-4573504 (F.C.)
| | - Macarena Martínez-Bailén
- Dipartimento di Chimica “Ugo Schiff” (DICUS), Università di Firenze, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy; (M.M.-B.); (C.M.); (A.G.)
- Glycosystems Laboratory, Instituto de Investigaciones Químicas (IIQ), CSIC—Universidad de Sevilla, Av. Américo Vespucio 49, 41092 Sevilla, Spain
| | - Camilla Matassini
- Dipartimento di Chimica “Ugo Schiff” (DICUS), Università di Firenze, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy; (M.M.-B.); (C.M.); (A.G.)
| | - Amelia Morrone
- Department of Neurosciences, Pharmacology and Child Health (NEUROFARBA), University of Florence, Viale Pieraccini n. 24, 50139 Firenze, Italy;
- Laboratory of Molecular Biology of Neurometabolic Diseases, Neuroscience Department, Meyer Children’s Hospital, Viale Pieraccini n. 24, 50139 Firenze, Italy; (S.F.); (A.C.)
| | - Silvia Falliano
- Laboratory of Molecular Biology of Neurometabolic Diseases, Neuroscience Department, Meyer Children’s Hospital, Viale Pieraccini n. 24, 50139 Firenze, Italy; (S.F.); (A.C.)
| | - Anna Caciotti
- Laboratory of Molecular Biology of Neurometabolic Diseases, Neuroscience Department, Meyer Children’s Hospital, Viale Pieraccini n. 24, 50139 Firenze, Italy; (S.F.); (A.C.)
| | - Paolo Paoli
- Dipartimento di Scienze Biomediche Sperimentali e Cliniche “Mario Serio” (DSBSC), University of Florence, Viale Morgagni 50, 50134 Florence, Italy;
| | - Andrea Goti
- Dipartimento di Chimica “Ugo Schiff” (DICUS), Università di Firenze, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy; (M.M.-B.); (C.M.); (A.G.)
| | - Francesca Cardona
- Dipartimento di Chimica “Ugo Schiff” (DICUS), Università di Firenze, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino, Italy; (M.M.-B.); (C.M.); (A.G.)
- Correspondence: (F.C.); (F.C.); Tel.: +39-055-4573453 (F.C.); +39-055-4573504 (F.C.)
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8
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Vanni C, Clemente F, Paoli P, Morrone A, Matassini C, Goti A, Cardona F. 3,4,5-Trihydroxypiperidine based multivalent glucocerebrosidase (GCase) enhancers. Chembiochem 2022; 23:e202200077. [PMID: 35322924 PMCID: PMC9400994 DOI: 10.1002/cbic.202200077] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/21/2022] [Indexed: 11/28/2022]
Abstract
The synthesis of five new multivalent derivatives of a trihydroxypiperidine iminosugar was accomplished through copper catalyzed alkyne‐azide cycloaddition (CuAAC) reaction of an azido ending piperidine and several propargylated scaffolds. The resulting multivalent architectures were assayed as inhibitors of lysosomal GCase, the defective enzyme in Gaucher disease. The multivalent compounds resulted in much more potent inhibitors than a parent monovalent reference compound, thus showing a good multivalent effect. Biological investigation of these compounds as pharmacological chaperones revealed that the trivalent derivative (12) gives a 2‐fold recovery of the GCase activity on Gaucher patient fibroblasts bearing the L444P/L444P mutations responsible for neuropathies. Additionally, a thermal denaturation experiment showed its ability to impart stability to the recombinant enzyme used in therapy.
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Affiliation(s)
- Costanza Vanni
- University of Florence: Universita degli Studi di Firenze, Department of Chemistry "Ugo Schiff", ITALY
| | - Francesca Clemente
- University of Florence: Universita degli Studi di Firenze, Department of Chemistry "Ugo Schiff", ITALY
| | - Paolo Paoli
- University of Florence: Universita degli Studi di Firenze, Department of Chemistry "Ugo Schiff", ITALY
| | - Amelia Morrone
- University of Florence: Universita degli Studi di Firenze, NEUROFARBA, ITALY
| | - Camilla Matassini
- University of Florence: Universita degli Studi di Firenze, Department of Chemistry "Ugo Schiff", ITALY
| | - Andrea Goti
- University of Florence: Universita degli Studi di Firenze, Department of Chemistry "Ugo Schiff", ITALY
| | - Francesca Cardona
- Università di Firenze, Dipartimento di Chimica, Via della Lastruccia 13, 50019, Sesto Fiorentino, ITALY
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9
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Davighi MG, Clemente F, Matassini C, Cardona F, Nielsen MB, Goti A, Morrone A, Paoli P, Cacciarini M. Photoswitchable inhibitors of human β-glucocerebrosidase. Org Biomol Chem 2022; 20:1637-1641. [PMID: 35107482 DOI: 10.1039/d1ob02159a] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Light-switchable inhibitors of the enzyme β-glucocerebrosidase (GCase) have been developed by anchoring a specific azasugar to a dihydroazulene or an azobenzene responsive moiety. Their inhibitory effect towards human GCase, before and after irradiation are reported, and the effect on thermal denaturation of recombinant GCase and cytotoxicity were studied on selected candidates.
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Affiliation(s)
- Maria Giulia Davighi
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3-13, 50019 Sesto F.no (FI), Italy.
| | - Francesca Clemente
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3-13, 50019 Sesto F.no (FI), Italy.
| | - Camilla Matassini
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3-13, 50019 Sesto F.no (FI), Italy.
| | - Francesca Cardona
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3-13, 50019 Sesto F.no (FI), Italy. .,Associated with LENS, via N. Carrara 1, 50019 Sesto F.no (FI), Italy
| | - Mogens Brøndsted Nielsen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Andrea Goti
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3-13, 50019 Sesto F.no (FI), Italy. .,Associated with LENS, via N. Carrara 1, 50019 Sesto F.no (FI), 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 24, 50139 Firenze, Italy
| | - Paolo Paoli
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale Morgagni 50, 50134 Firenze, Italy
| | - Martina Cacciarini
- Department of Chemistry "U. Schiff", University of Florence, via della Lastruccia 3-13, 50019 Sesto F.no (FI), Italy.
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10
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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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11
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Clemente F, Matassini C, Giachetti S, Goti A, Morrone A, Martínez-Bailén M, Orta S, Merino P, Cardona F. Piperidine Azasugars Bearing Lipophilic Chains: Stereoselective Synthesis and Biological Activity as Inhibitors of Glucocerebrosidase (GCase). J Org Chem 2021; 86:12745-12761. [PMID: 34469155 PMCID: PMC8453635 DOI: 10.1021/acs.joc.1c01308] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
We report a straightforward
synthetic strategy for the preparation
of trihydroxypiperidine azasugars decorated with lipophilic chains
at both the nitrogen and the adjacent carbon as potential inhibitors
of the lysosomal enzyme glucocerebrosidase (GCase), which is involved
in Gaucher disease. The procedure relies on the preparation of C-erythrosyl N-alkylated nitrones 10 through reaction of aldehyde 8 and primary
amines 13 followed by oxidation of the imines formed in situ with the methyltrioxorhenium catalyst and urea hydrogen
peroxide. The addition of octylMgBr to nitrone 10e provided
access to both epimeric hydroxylamines 21 and 22 with opposite configuration at the newly created stereocenter in
a stereodivergent and completely stereoselective way, depending on
the absence or presence of BF3·Et2O. Final
reductive amination and acetonide deprotection provided compounds 14 and 15 from low-cost d-mannose in
remarkable 43 and 32% overall yields, respectively, over eight steps.
The C-2 R-configured bis-alkylated trihydroxypiperidine 15 was the best ligand for GCase (IC50 = 15 μM),
in agreement with MD simulations that allowed us to identify the chair
conformation corresponding to the best binding affinity.
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Affiliation(s)
- Francesca Clemente
- Dipartimento di Chimica "Ugo Schiff" (DICUS), University of Firenze, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy
| | - Camilla Matassini
- Dipartimento di Chimica "Ugo Schiff" (DICUS), University of Firenze, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy
| | - Sara Giachetti
- Dipartimento di Chimica "Ugo Schiff" (DICUS), University of Firenze, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy
| | - Andrea Goti
- Dipartimento di Chimica "Ugo Schiff" (DICUS), University of Firenze, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), 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
| | - Macarena Martínez-Bailén
- Dipartimento di Chimica "Ugo Schiff" (DICUS), University of Firenze, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy.,Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, c/ Prof. García González 1, E-41012 Sevilla, Spain
| | - Sara Orta
- Unidad de Glicobiología, Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Pedro Merino
- Unidad de Glicobiología, Instituto de Biocomputación y Física de Sistemas Complejos (BIFI), Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Francesca Cardona
- Dipartimento di Chimica "Ugo Schiff" (DICUS), University of Firenze, Via Della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy
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12
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Sharma R, Srivastava T, Pandey AR, Mishra T, Gupta B, Reddy SS, Singh SP, Narender T, Tripathi A, Chandramouli B, Sashidhara KV, Priya S, Kumar N. Identification of Natural Products as Potential Pharmacological Chaperones for Protein Misfolding Diseases. ChemMedChem 2021; 16:2146-2156. [PMID: 33760394 DOI: 10.1002/cmdc.202100147] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Indexed: 01/12/2023]
Abstract
Defective protein folding and accumulation of misfolded proteins is associated with neurodegenerative, cardiovascular, secretory, and metabolic disorders. Efforts are being made to identify small-molecule modulators or structural-correctors for conformationally destabilized proteins implicated in various protein aggregation diseases. Using a metastable-reporter-based primary screen, we evaluated pharmacological chaperone activity of a diverse class of natural products. We found that a flavonoid glycoside (C-10, chrysoeriol-7-O-β-D-glucopyranoside) stabilizes metastable proteins, prevents its aggregation, and remodels the oligomers into protease-sensitive species. Data was corroborated with additional secondary screen with disease-specific pathogenic protein. In vitro and cell-based experiments showed that C-10 inhibits α-synuclein aggregation which is implicated in synucleinopathies-related neurodegeneration. C-10 interferes in its structural transition into β-sheeted fibrils and mitigates α-synuclein aggregation-associated cytotoxic effects. Computational modeling suggests that C-10 binds to unique sites in α-synuclein which may interfere in its aggregation amplification. These findings open an avenue for comprehensive SAR development for flavonoid glycosides as pharmacological chaperones for metastable and aggregation-prone proteins implicated in protein conformational diseases.
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Affiliation(s)
- Richa Sharma
- CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Tulika Srivastava
- CSIR-Indian Institute of Toxicology Research, Lucknow, 226 001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201 002, India
| | - Alka Raj Pandey
- CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201 002, India
| | - Tripti Mishra
- CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Bhagyashri Gupta
- CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | | | - Suriya P Singh
- CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Tadigoppula Narender
- CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201 002, India
| | - Aradhya Tripathi
- CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | | | - Koneni V Sashidhara
- CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201 002, India
| | - Smriti Priya
- CSIR-Indian Institute of Toxicology Research, Lucknow, 226 001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201 002, India
| | - Niti Kumar
- CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201 002, India
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13
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Serbian I, Prell E, Fischer C, Deigner HP, Csuk R. n-Propyl 6-amino-2,6-dideoxy-2,2-difluoro-β-d-glucopyranoside is a good inhibitor for the β-galactosidase from E. coli. Med Chem Res 2021; 30:1099-1107. [PMID: 33716475 PMCID: PMC7934981 DOI: 10.1007/s00044-021-02715-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 02/17/2021] [Indexed: 01/25/2023]
Abstract
A convenient route has been developed for the synthesis of novel 6-amino-2,2-(or 3,3-difluoro)-2-(or 3),6-dideoxy-hexopyranoses. Biological screening showed these compounds as good inhibitors for several glycosidases. Especially n-propyl 6-amino-2,6-dideoxy-2,2-difluoro-β-d-glucopyranoside (8) was an excellent competitive inhibitor for the β-galactosidase from E. coli holding a Ki of 0.50 μM. ![]()
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Affiliation(s)
- Immo Serbian
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes_Str. 2, D-06120 Halle (Saale), Germany
| | - Erik Prell
- Department of Radiation Medicine, Section of Nuclear Medicine, University Hospital Halle (Saale), Ernst-Grube Str. 40, D-06120 Halle (Saale), Germany
| | - Claudia Fischer
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes_Str. 2, D-06120 Halle (Saale), Germany
| | - Hans-Peter Deigner
- Medical and Life Sciences Faculty, Furtwangen University, Jakob-Kienzle Str. 17, D-78054 Villingen-Schwenningen, Germany
| | - René Csuk
- Martin-Luther-University Halle-Wittenberg, Organic Chemistry, Kurt-Mothes_Str. 2, D-06120 Halle (Saale), Germany
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14
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Synthesis of " All-Cis" Trihydroxypiperidines from a Carbohydrate-Derived Ketone: Hints for the Design of New β-Gal and GCase Inhibitors. Molecules 2020; 25:molecules25194526. [PMID: 33023214 PMCID: PMC7582770 DOI: 10.3390/molecules25194526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/18/2020] [Accepted: 09/30/2020] [Indexed: 12/02/2022] Open
Abstract
Pharmacological chaperones (PCs) are small compounds able to rescue the activity of mutated lysosomal enzymes when used at subinhibitory concentrations. Nitrogen-containing glycomimetics such as aza- or iminosugars are known to behave as PCs for lysosomal storage disorders (LSDs). As part of our research into lysosomal sphingolipidoses inhibitors and looking in particular for new β-galactosidase inhibitors, we report the synthesis of a series of alkylated azasugars with a relative “all-cis” configuration at the hydroxy/amine-substituted stereocenters. The novel compounds were synthesized from a common carbohydrate-derived piperidinone intermediate 8, through reductive amination or alkylation of the derived alcohol. In addition, the reaction of ketone 8 with several lithium acetylides allowed the stereoselective synthesis of new azasugars alkylated at C-3. The activity of the new compounds towards lysosomal β-galactosidase was negligible, showing that the presence of an alkyl chain in this position is detrimental to inhibitory activity. Interestingly, 9, 10, and 12 behave as good inhibitors of lysosomal β-glucosidase (GCase) (IC50 = 12, 6.4, and 60 µM, respectively). When tested on cell lines bearing the Gaucher mutation, they did not impart any enzyme rescue. However, altogether, the data included in this work give interesting hints for the design of novel inhibitors.
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15
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Clemente F, Matassini C, Cardona F. Reductive Amination Routes in the Synthesis of Piperidine IminoSugars. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901840] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Francesca Clemente
- Dipartimento di Chimica “Ugo Schiff”; Università di Firenze; Via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Camilla Matassini
- Dipartimento di Chimica “Ugo Schiff”; Università di Firenze; Via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Francesca Cardona
- Dipartimento di Chimica “Ugo Schiff”; Università di Firenze; Via della Lastruccia 3-13 50019 Sesto Fiorentino (FI) Italy
- Associated with Consorzio Interuniversitario Nazionale di ricerca in Metodologie e Processi Innovativi di Sintesi (CINMPIS); Università di Bari; 70125 Bari Italy
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16
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Clemente F, Matassini C, Faggi C, Giachetti S, Cresti C, Morrone A, Paoli P, Goti A, Martínez-Bailén M, Cardona F. Glucocerebrosidase (GCase) activity modulation by 2-alkyl trihydroxypiperidines: Inhibition and pharmacological chaperoning. Bioorg Chem 2020; 98:103740. [PMID: 32200326 DOI: 10.1016/j.bioorg.2020.103740] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 02/26/2020] [Accepted: 03/07/2020] [Indexed: 12/22/2022]
Abstract
The enzyme glucocerebrosidase (GCase) has become an important therapeutic target due to its involvement in pathological disorders consequent to enzyme deficiency, such as the lysosomal storage Gaucher disease (GD) and the neurological Parkinson disease (PD). Pharmacological chaperones (PCs) are small compounds able to stabilize enzymes when used at sub-inhibitory concentrations, thus rescuing enzyme activity. We report the stereodivergent synthesis of trihydroxypiperidines alkylated at C-2 with both configurations, by means of the stereoselective addition of Grignard reagents to a carbohydrate-derived nitrone in the presence or absence of Lewis acids. All the target compounds behave as good GCase inhibitors, with IC50 in the micromolar range. Moreover, compound 11a behaves as a PC in fibroblasts derived from Gaucher patients bearing the N370/RecNcil mutation and the homozygous L444P mutation, rescuing the activity of the deficient enzyme by up to 1.9- and 1.8-fold, respectively. Rescues of 1.2-1.4-fold were also observed in wild-type fibroblasts, which is important for targeting sporadic forms of PD.
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Affiliation(s)
- F Clemente
- Department of Chemistry 'Ugo Schiff', University of Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy
| | - C Matassini
- Department of Chemistry 'Ugo Schiff', University of Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy.
| | - C Faggi
- Department of Chemistry 'Ugo Schiff', University of Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy
| | - S Giachetti
- Department of Chemistry 'Ugo Schiff', University of Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy
| | - C Cresti
- Department of Chemistry 'Ugo Schiff', University of Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy
| | - A 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
| | - P Paoli
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, Viale Morgagni 50, 50134 Florence, Italy
| | - A Goti
- Department of Chemistry 'Ugo Schiff', University of Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy; Associated with Consorzio Interuniversitario Nazionale di ricerca in Metodologie e Processi Innovativi di Sintesi (CINMPIS), Italy
| | - M Martínez-Bailén
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, c/ Prof. García González 1, E-41012 Sevilla, Spain
| | - F Cardona
- Department of Chemistry 'Ugo Schiff', University of Firenze, via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy; Associated with Consorzio Interuniversitario Nazionale di ricerca in Metodologie e Processi Innovativi di Sintesi (CINMPIS), Italy.
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17
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A Route to 1-Deoxynojirimycin and 1-Deoxymannojirimycin Derivatives with Quaternary Centers Adjacent to the Ring Nitrogen from Methyl α-d
-Mannopyranoside. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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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] [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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