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Guerrero F, Carmona A, Vidal V, Franco A, Martín-Malo A, Sánchez-Fernández EM, Carrillo-Carrión C. A selenoureido-iminoglycolipid transported by zeolitic-imidazolate framework nanoparticles: a novel antioxidant therapeutic approach. NANOSCALE HORIZONS 2023; 8:1700-1710. [PMID: 37819240 DOI: 10.1039/d3nh00363a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
A selenium-containing metal-organic framework with remarkable antioxidant capacity and ROS-scavenging activity was constructed by a controlled de novo encapsulation approach of a glycoconjugate mimetic, specifically a sp2-iminoglycolipid bearing a selenoureido fragment (DSeU), within a zeolitic-imidazolate framework exoskeleton. Biocompatible and homogeneous nanosized particles of ∼70 nm (DSeU@ZIF8) were obtained, which could be efficiently internalized in cells, overcoming the poor solubility in biological media and limited bioavailability of glycolipids. The ZIF-particle served as nanocarrier for the intracellular delivery of the selenocompound to cells, promoted by the acidic pH inside endosomes/lysosomes. As demonstrated by in vitro studies, the designed DSeU@ZIF8 nanoparticles displayed a high antioxidant activity at low doses; lower intracellular ROS levels were observed upon the uptake of DSeU@ZIF8 by human endothelial cells. Even more interesting was the finding that these DSeU@ZIF8 particles were able to reverse to a certain level the oxidative stress induced in cells by pre-treatment with an oxidizing agent. This possibility of modulating the oxidative stress in living cells may have important implications in the treatment of diverse pathological complications that are generally accompanied with elevated ROS levels.
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Affiliation(s)
- Fátima Guerrero
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, 14004 Córdoba, Spain
| | - Andrés Carmona
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, 14004 Córdoba, Spain
| | - Victoria Vidal
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, 14004 Córdoba, Spain
| | - Ana Franco
- Leibniz Institute für Katalyse e. V., 18059 Rostock, Germany
| | - Alejandro Martín-Malo
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, 14004 Córdoba, Spain
| | - Elena M Sánchez-Fernández
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Sevilla, Spain.
| | - Carolina Carrillo-Carrión
- Institute for Chemical Research (IIQ), CSIC-University of Seville, Avda. Américo Vespucio 49, 41092 Sevilla, Spain.
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2
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Padilla-Pérez MC, Sánchez-Fernández EM, González-Bakker A, Puerta A, Padrón JM, Martín-Loro F, Arroba AI, García Fernández JM, Mellet CO. Fluoro-labelled sp 2-iminoglycolipids with immunomodulatory properties. Eur J Med Chem 2023; 255:115390. [PMID: 37137247 DOI: 10.1016/j.ejmech.2023.115390] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/14/2023] [Accepted: 04/17/2023] [Indexed: 05/05/2023]
Abstract
The unique electronic properties of the fluorine atom make its strategic incorporation into a bioactive compound a very useful tool in the design of drugs with optimized pharmacological properties. In the field of the carbohydrates, its selective installation at C2 position has proven particularly interesting, some 2-deoxy-2-fluorosugar derivatives being currently in the market. We have now transferred this feature into immunoregulatory glycolipid mimetics that contain a sp2-iminosugar moiety, namely sp2-iminoglycolipids (sp2-IGLs). The synthesis of two epimeric series of 2-deoxy-2-fluoro-sp2-IGLs, structurally related to nojirimycin and mannonojirimycin, has been accomplished by sequential Selectfluor-mediated fluorination and thioglycosidation of sp2-iminoglycals. Exclusively the α-anomer is obtained regardless of the configurational profile of the sp2-IGL (d-gluco or d-manno), highlighting the overwhelming anomeric effect in these prototypes. Notably, the combination of a fluorine atom at C2 and an α-oriented sulfonyl dodecyl lipid moiety in compound 11 led to remarkable anti-proliferative properties, featuring similar GI50 values than the chemotherapy drug Cisplatin against several tumor cell lines and better selectivity. The biochemical data further evidence a strong reduction of the number of tumor cell colonies and apoptosis induction. Mechanistic investigations revealed that this fluoro-sp2-IGL induces the non-canonical activation mode of the mitogen-activated protein kinase signaling pathway, causing p38α autoactivation under an inflammatory context.
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Affiliation(s)
- M Carmen Padilla-Pérez
- Department of Organic Chemistry, Faculty of Chemistry, University of Sevilla, C/ Profesor García González 1, 41012, Sevilla, Spain
| | - Elena M Sánchez-Fernández
- Department of Organic Chemistry, Faculty of Chemistry, University of Sevilla, C/ Profesor García González 1, 41012, Sevilla, Spain.
| | - Aday González-Bakker
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González", Universidad de la Laguna, C/ Astrofísico Francisco Sánchez 2, 38206, La Laguna, Spain
| | - Adrián Puerta
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González", Universidad de la Laguna, C/ Astrofísico Francisco Sánchez 2, 38206, La Laguna, Spain
| | - José M Padrón
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio González", Universidad de la Laguna, C/ Astrofísico Francisco Sánchez 2, 38206, La Laguna, Spain.
| | - Francisco Martín-Loro
- Biomedical Research and Innovation Institute of Cádiz (INiBICA) Research Unit, Puerta del Mar University Hospital, Av/ Ana de Viya 21, 11009, Cádiz, Spain
| | - Ana I Arroba
- Biomedical Research and Innovation Institute of Cádiz (INiBICA) Research Unit, Puerta del Mar University Hospital, Av/ Ana de Viya 21, 11009, Cádiz, Spain; Department of Biomedicine, Biotechnology and Public Health Immunology Area, University of Cádiz Pl. Falla, 9, 11003, Cádiz, Spain
| | - José Manuel García Fernández
- Instituto de Investigaciones Químicas (IIQ), CSIC - Universidad de Sevilla, C/ Américo Vespucio 49, Isla de la Cartuja, 41092, Sevilla, Spain
| | - Carmen Ortiz Mellet
- Department of Organic Chemistry, Faculty of Chemistry, University of Sevilla, C/ Profesor García González 1, 41012, Sevilla, Spain
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3
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Unravelling the Inflammatory Processes in the Early Stages of Diabetic Nephropathy and the Potential Effect of (Ss)-DS-ONJ. Int J Mol Sci 2022; 23:ijms23158450. [PMID: 35955585 PMCID: PMC9368839 DOI: 10.3390/ijms23158450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 07/27/2022] [Accepted: 07/28/2022] [Indexed: 01/27/2023] Open
Abstract
Inflammatory processes play a central role in the pathogenesis of diabetic nephropathy (DN) in the early stages of the disease. The authors demonstrate that the glycolipid mimetic (Ss)-DS-ONJ is able to abolish inflammation via the induction of autophagy flux and provokes the inhibition of inflammasome complex in ex vivo and in vitro models, using adult kidney explants from BB rats. The contribution of (Ss)-DS-ONJ to reducing inflammatory events is mediated by the inhibition of classical stress kinase pathways and the blocking of inflammasome complex activation. The (Ss)-DS-ONJ treatment is able to inhibit the epithelial-to-mesenchymal transition (EMT) progression, but only when the IL18 levels are reduced by the treatment. These findings suggest that (Ss)-DS-ONJ could be a novel, and multifactorial treatment for DN.
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4
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Design, synthesis, biologically evaluation and molecular docking of C-glycosidic oximino carbamates as novel OfHex1 inhibitors. Carbohydr Res 2022; 520:108629. [PMID: 35849863 DOI: 10.1016/j.carres.2022.108629] [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: 05/31/2022] [Revised: 06/28/2022] [Accepted: 06/28/2022] [Indexed: 11/24/2022]
Abstract
The inhibition of function-specific β-N-acetyl-D-hexosaminidases, such as OfHex1 from the Asian corn borer (Ostrinia furnacalis), is a promising strategy for the development of green pesticides. Among reported OfHex1 inhibitors, glycosyl inhibitors show especially high inhibitory activity. In this study, a series of novel C-glycosidic oximino carbamate derivatives were designed using the OfHex1 crystal structure and synthesized. Among the C-Glycoside derivatives studied, compound 7k exhibited the best inhibitory activity against OfHex1 (IC50 = 47.47 μM). Compound 7k also exhibited excellent larvicidal activity against Plutella xylostella. The potential inhibitory mechanism of 7k was studied using molecular docking. Notably, compound 7k is the first reported C-glycoside inhibitor of OfHex1. These results provide direction for the rational design of novel OfHex1 inhibitors.
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Herrera-González I, González-Cuesta M, García-Moreno MI, García Fernández JM, Ortiz Mellet C. Stereoselective Synthesis of Nojirimycin α- C-Glycosides from a Bicyclic Acyliminium Intermediate: A Convenient Entry to N, C-Biantennary Glycomimetics. ACS OMEGA 2022; 7:22394-22405. [PMID: 35811898 PMCID: PMC9260894 DOI: 10.1021/acsomega.2c01469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 04/06/2022] [Indexed: 06/15/2023]
Abstract
A simple and efficient method for the stereoselective synthesis of nojirimycin α-C-glycoside derivatives has been developed using a bicyclic carbamate-type sp2-iminosugar, whose preparation on a gram scale has been optimized, as the starting material. sp2-iminosugar O-glycosides or anomeric esters serve as excellent precursors of acyliminium cations, which can add nucleophiles, including C-nucleophiles. The stereochemical outcome of the reaction is governed by stereoelectronic effects, affording the target α-anomer with total stereoselectivity. Thus, the judicious combination of C-allylation, carbamate hydrolysis, cross-metathesis, and hydrogenation reactions provides a very convenient entry to iminosugar α-C-glycosides, which have been transformed into N,C-biantennary derivatives by reductive amination or thiourea-forming reactions. The thiourea adducts undergo intramolecular cyclization to bicyclic iminooxazolidine iminosugar α-C-glycosides upon acid treatment, broadening the opportunities for molecular diversity. A preliminary evaluation against a panel of commercial glycosidases validates the approach for finely tuning the inhibitory profile of glycomimetics.
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Affiliation(s)
- Irene Herrera-González
- Department
of Organic Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Sevilla, Spain
| | - Manuel González-Cuesta
- Department
of Organic Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Sevilla, Spain
| | - M. Isabel García-Moreno
- Department
of Organic Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Sevilla, Spain
| | - José Manuel García Fernández
- Instituto
de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla, C/Américo Vespucio 49,
Isla de la Cartuja, 41092 Sevilla, Spain
| | - Carmen Ortiz Mellet
- Department
of Organic Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Sevilla, Spain
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6
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Xiao Q, Tong QX, Zhong JJ. Recent Advances in Visible-Light Photoredox Catalysis for the Thiol-Ene/Yne Reactions. Molecules 2022; 27:molecules27030619. [PMID: 35163886 PMCID: PMC8839682 DOI: 10.3390/molecules27030619] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 01/14/2022] [Accepted: 01/17/2022] [Indexed: 02/04/2023] Open
Abstract
Visible-light photoredox catalysis has been established as a popular and powerful tool for organic transformations owing to its inherent characterization of environmental friendliness and sustainability in the past decades. The thiol-ene/yne reactions, the direct hydrothiolation of alkenes/alkynes with thiols, represents one of the most efficient and atom-economic approaches for the carbon-sulfur bonds construction. In traditional methodologies, harsh conditions such as stoichiometric reagents or a specialized UV photo-apparatus were necessary suffering from various disadvantages. In particular, visible-light photoredox catalysis has also been demonstrated to be a greener and milder protocol for the thiol-ene/yne reactions in recent years. Additionally, unprecedented advancements have been achieved in this area during the past decade. In this review, we will summarize the recent advances in visible-light photoredox catalyzed thiol-ene/yne reactions from 2015 to 2021. Synthetic strategies, substrate scope, and proposed reaction pathways are mainly discussed.
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Affiliation(s)
- Qian Xiao
- School of Chemistry and Environmental Engineering, Hanshan Normal University, Chaozhou 521041, China;
- Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Department of Chemistry, Shantou University, Shantou 515063, China
| | - Qing-Xiao Tong
- Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Department of Chemistry, Shantou University, Shantou 515063, China
- Correspondence: (Q.-X.T.); (J.-J.Z.)
| | - Jian-Ji Zhong
- Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Department of Chemistry, Shantou University, Shantou 515063, China
- The Chemistry and Chemical Engineering Laboratory of Guangdong Province, Shantou 515063, China
- Correspondence: (Q.-X.T.); (J.-J.Z.)
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7
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Sánchez-Fernández EM, García-Hernández R, Gamarro F, Arroba AI, Aguilar-Diosdado M, Padrón JM, García Fernández JM, Ortiz Mellet C. Synthesis of sp 2-Iminosugar Selenoglycolipids as Multitarget Drug Candidates with Antiproliferative, Leishmanicidal and Anti-Inflammatory Properties. Molecules 2021; 26:molecules26247501. [PMID: 34946583 PMCID: PMC8705409 DOI: 10.3390/molecules26247501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/05/2021] [Accepted: 12/08/2021] [Indexed: 11/16/2022] Open
Abstract
sp2-Iminosugar glycolipids (sp2-IGLs) represent a consolidated family of glycoconjugate mimetics encompassing a monosaccharide-like glycone moiety with a pseudoamide-type nitrogen replacing the endocyclic oxygen atom of carbohydrates and an axially-oriented lipid chain anchored at the pseudoanomeric position. The combination of these structural features makes them promising candidates for the treatment of a variety of conditions, spanning from cancer and inflammatory disorders to parasite infections. The exacerbated anomeric effect associated to the putative sp2-hybridized N-atom imparts chemical and enzymatic stability to sp2-IGLs and warrants total α-anomeric stereoselectivity in the key glycoconjugation step. A variety of O-, N-, C- and S-pseudoglycosides, differing in glycone configurational patterns and lipid nature, have been previously prepared and evaluated. Here we expand the chemical space of sp2-IGLs by reporting the synthesis of α-d-gluco-configured analogs with a bicyclic (5N,6O-oxomethylidene)nojirimycin (ONJ) core incorporating selenium at the glycosidic position. Structure-activity relationship studies in three different scenarios, namely cancer, Leishmaniasis and inflammation, convey that the therapeutic potential of the sp2-IGLs is highly dependent, not only on the length of the lipid chain (linear aliphatic C12 vs. C8), but also on the nature of the glycosidic atom (nitrogen vs. sulfur vs. selenium). The ensemble of results highlights the α-dodecylseleno-ONJ-glycoside as a promising multitarget drug candidate.
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Affiliation(s)
- Elena M. Sánchez-Fernández
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Seville, Spain;
- Correspondence: ; Tel.: +34-954-559-997
| | - Raquel García-Hernández
- Instituto de Parasitología y Biomedicina “López-Neyra”, Parque Tecnológico de Ciencias de la Salud, 18016 Granada, Spain; (R.G.-H.); (F.G.)
| | - Francisco Gamarro
- Instituto de Parasitología y Biomedicina “López-Neyra”, Parque Tecnológico de Ciencias de la Salud, 18016 Granada, Spain; (R.G.-H.); (F.G.)
| | - Ana I. Arroba
- Research Unit, Biomedical Research and Innovation Institute of Cádiz, Puerta del Mar University Hospital, Av/Ana de Viya 21, 11009 Cádiz, Spain; (A.I.A.); (M.A.-D.)
| | - Manuel Aguilar-Diosdado
- Research Unit, Biomedical Research and Innovation Institute of Cádiz, Puerta del Mar University Hospital, Av/Ana de Viya 21, 11009 Cádiz, Spain; (A.I.A.); (M.A.-D.)
| | - José M. Padrón
- BioLab, Instituto Universitario de Bio-Orgánica Antonio González, Universidad de La Laguna, C/Astrofísico Francisco Sánchez 2, 38206 La Laguna, Spain;
| | - José M. García Fernández
- Instituto de Investigaciones Químicas, CSIC-University of Seville, Américo Vespucio 49, 41092 Sevilla, Spain;
| | - Carmen Ortiz Mellet
- Department of Organic Chemistry, Faculty of Chemistry, University of Seville, C/Profesor García González 1, 41012 Seville, Spain;
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8
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Cano-Cano F, Alcalde-Estévez E, Gómez-Jaramillo L, Iturregui M, Sánchez-Fernández EM, García Fernández JM, Ortiz Mellet C, Campos-Caro A, López-Tinoco C, Aguilar-Diosdado M, Valverde ÁM, Arroba AI. Anti-Inflammatory (M2) Response Is Induced by a sp 2-Iminosugar Glycolipid Sulfoxide in Diabetic Retinopathy. Front Immunol 2021; 12:632132. [PMID: 33815384 PMCID: PMC8013727 DOI: 10.3389/fimmu.2021.632132] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 03/01/2021] [Indexed: 12/11/2022] Open
Abstract
Diabetic retinopathy (DR) is one of the most common complications of Diabetes Mellitus (DM) and is directly associated with inflammatory processes. Currently, neuro-inflammation is considered an early event in DR and proceeds via microglia polarization. A hallmark of DR is the presence of retinal reactive gliosis. Here we report the beneficial effect of (SS,1R)-1-docecylsulfiny-5N,6O-oxomethylidenenojirimycin ((Ss)-DS-ONJ), a member of the sp2-iminosugar glycolipid (sp2-IGL) family, by decreasing iNOS and inflammasome activation in Bv.2 microglial cells exposed to pro-inflammatory stimuli. Moreover, pretreatment with (Ss)-DS-ONJ increased Heme-oxygenase (HO)-1 as well as interleukin 10 (IL10) expression in LPS-stimulated microglial cells, thereby promoting M2 (anti-inflammatory) response by the induction of Arginase-1. The results strongly suggest that this is the likely molecular mechanism involved in the anti-inflammatory effects of (SS)-DS-ONJ in microglia. (SS)-DS-ONJ further reduced gliosis in retinal explants from type 1 diabetic BB rats, which is consistent with the enhanced M2 response. In conclusion, targeting microglia polarization dynamics in M2 status by compounds with anti-inflammatory activities offers promising therapeutic interventions at early stages of DR.
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Affiliation(s)
- Fátima Cano-Cano
- Research Unit, Instituto de Investigación e Innovación en Ciencias Biomédicas de la Provincia de Cádiz (INiBICA), Hospital Universitario Puerta del Mar, Cádiz, Spain.,Department of Endocrinology and Metabolism, University Hospital Puerta del Mar, Cádiz, Spain
| | - Elena Alcalde-Estévez
- Department of Metabolism and Cell Signaling, Instituto de Investigaciones Biomédicas Alberto Sols (IIBm) (CSIC/UAM), Madrid, Spain
| | - Laura Gómez-Jaramillo
- Research Unit, Instituto de Investigación e Innovación en Ciencias Biomédicas de la Provincia de Cádiz (INiBICA), Hospital Universitario Puerta del Mar, Cádiz, Spain.,Department of Endocrinology and Metabolism, University Hospital Puerta del Mar, Cádiz, Spain
| | - Marta Iturregui
- Research Unit, Instituto de Investigación e Innovación en Ciencias Biomédicas de la Provincia de Cádiz (INiBICA), Hospital Universitario Puerta del Mar, Cádiz, Spain.,Department of Endocrinology and Metabolism, University Hospital Puerta del Mar, Cádiz, Spain
| | | | | | - Carmen Ortiz Mellet
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Sevilla, Spain
| | - Antonio Campos-Caro
- Research Unit, Instituto de Investigación e Innovación en Ciencias Biomédicas de la Provincia de Cádiz (INiBICA), Hospital Universitario Puerta del Mar, Cádiz, Spain.,Área Genética, Dpto. Biomedicina Biotecnología y Salud Pública, Universidad de Cádiz, Cádiz, Spain
| | - Cristina López-Tinoco
- Department of Endocrinology and Metabolism, University Hospital Puerta del Mar, Cádiz, Spain
| | - Manuel Aguilar-Diosdado
- Research Unit, Instituto de Investigación e Innovación en Ciencias Biomédicas de la Provincia de Cádiz (INiBICA), Hospital Universitario Puerta del Mar, Cádiz, Spain.,Department of Endocrinology and Metabolism, University Hospital Puerta del Mar, Cádiz, Spain
| | - Ángela M Valverde
- Department of Metabolism and Cell Signaling, Instituto de Investigaciones Biomédicas Alberto Sols (IIBm) (CSIC/UAM), Madrid, Spain.,Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERdem), ISCIII, Madrid, Spain
| | - Ana I Arroba
- Research Unit, Instituto de Investigación e Innovación en Ciencias Biomédicas de la Provincia de Cádiz (INiBICA), Hospital Universitario Puerta del Mar, Cádiz, Spain.,Department of Endocrinology and Metabolism, University Hospital Puerta del Mar, Cádiz, Spain
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9
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Zelli R, Dumy P, Marra A. Metal-free synthesis of imino-disaccharides and calix-iminosugars by photoinduced radical thiol–ene coupling (TEC). Org Biomol Chem 2020; 18:2392-2397. [DOI: 10.1039/d0ob00198h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Deprotected iminosugar alkenes were subjected to thiol–ene coupling with deprotected sugar thiols to afford new imino-disaccharides. Two thiol–ene couplings converted these alkenes into iminosugar thiols and then multivalent iminosugars.
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Affiliation(s)
- Renaud Zelli
- Institut des Biomolécules Max Mousseron (IBMM)
- UMR 5247
- CNRS
- Université de Montpellier
- Ecole Nationale Supérieure de Chimie de Montpellier
| | - Pascal Dumy
- Institut des Biomolécules Max Mousseron (IBMM)
- UMR 5247
- CNRS
- Université de Montpellier
- Ecole Nationale Supérieure de Chimie de Montpellier
| | - Alberto Marra
- Institut des Biomolécules Max Mousseron (IBMM)
- UMR 5247
- CNRS
- Université de Montpellier
- Ecole Nationale Supérieure de Chimie de Montpellier
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