1
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Eisenberg DS, Harran PG, El Khoury A, Seidler PM. Catalytic Synthesis of PEGylated EGCG Conjugates that Disaggregate Alzheimer’s Tau. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1509-5904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractThe naturally occurring flavonoid (–)-epigallocatechin gallate (EGCG) is a potent disaggregant of tau fibrils. Guided by the recent cryo-electron microscopy (cryoEM) structure of EGCG bound to fibrils of tau derived from an Alzheimer’s brain donor, methods to site-specifically modify the EGCG D-ring with aminoPEGylated linkers are reported. The resultant molecules inhibit tau fibril seeding by Alzheimer’s brain extracts. Formulations of aminoPEGylated EGCG conjugated to the (quasi)-brain-penetrant nanoparticle Ferumoxytol inhibit seeding by AD-tau with linker length affecting activity. The protecting group-free catalytic cycloaddition of amino azides to mono-propargylated EGCG described here provides a blueprint for access to stable nanoparticulate forms of EGCG potentially useful as therapeutics to eliminate Alzheimer’s-related tau tangles.
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2
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Zhu J, Tian XQ, Kong LQ, Ke LN, Ran FY, Wu L, Wang HM, Chen QH, Zeng XH. One-pot synthesis of Acanthus ilicifolius Linn alkaloid 2-benzoxazolinone derivatives via a tandem Ugi 4-component coupling/haloform cyclization. JOURNAL OF CHEMICAL RESEARCH 2021. [DOI: 10.1177/17475198211024609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A one-pot, base-mediated approach to Acanthus ilicifolius Linn alkaloid 2-benzoxazolinone derivatives is developed. Starting from trichloroacetic acid, o-aminophenol, substituted benzaldehydes and alkyl isocyanides, the desired 2-benzoxazolinone derivatives are obtained in good yields via a tandem Ugi condensation and intramolecular haloform cyclization at room temperature in the presence of Et3N.
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Affiliation(s)
- Jun Zhu
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan, P.R. China
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, P.R. China
| | - Xiao-Qiong Tian
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan, P.R. China
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, P.R. China
| | - Ling-Qi Kong
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, P.R. China
| | - Li-Na Ke
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan, P.R. China
| | - Feng-Ying Ran
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan, P.R. China
| | - Lun Wu
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan, P.R. China
| | - Hong-Mei Wang
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan, P.R. China
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, P.R. China
| | - Qin-Hua Chen
- Shenzhen Baoan Authentic TCM Therapy Hospital, Shenzhen, P.R. China
| | - Xiao-Hua Zeng
- Sinopharm Dongfeng General Hospital, Hubei University of Medicine, Shiyan, P.R. China
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan, P.R. China
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3
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Zhang X, Fedeli S, Gopalakrishnan S, Huang R, Gupta A, Luther DC, Rotello VM. Protection and Isolation of Bioorthogonal Metal Catalysts by Using Monolayer-Coated Nanozymes. Chembiochem 2020; 21:2759-2763. [PMID: 32400081 PMCID: PMC7541601 DOI: 10.1002/cbic.202000207] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 05/07/2020] [Indexed: 01/08/2023]
Abstract
We demonstrate here the protection of biorthogonal transition metal catalysts (TMCs) in biological environments by using self-assembled monolayers on gold nanoparticles (AuNPs). Encapsulation of TMCs in this hydrophobic environment preserves catalytic activity in presence of pH conditions and complex biological media that would deactivate free catalyst. Significantly, the protection affords by these nanozymes extends to isolation of the catalyst active site, as demonstrated by the independence of rate over a wide pH range, in strong contrast to the behavior of the free catalyst.
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Affiliation(s)
- Xianzhi Zhang
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Stefano Fedeli
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Sanjana Gopalakrishnan
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Rui Huang
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Aarohi Gupta
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - David C. Luther
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Vincent M. Rotello
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
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4
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Ramos-Tomillero I, Pérez-Chacon G, Somovilla-Crespo B, Sánchez-Madrid F, Cuevas C, Zapata JM, Domínguez JM, Rodríguez H, Albericio F. From Ugi Multicomponent Reaction to Linkers for Bioconjugation. ACS OMEGA 2020; 5:7424-7431. [PMID: 32280884 PMCID: PMC7144135 DOI: 10.1021/acsomega.0c00099] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 02/14/2020] [Indexed: 06/11/2023]
Abstract
Bioconjugation is a key approach for the development of novel molecular entities with clinical applications. The biocompatibility and specificity of biomolecules such as peptides, proteins, and antibodies make these macromolecules ideal carriers for selective targeted therapies. In this context, there is a need to develop new molecular units that cover the requirements of the next generation of targeted pharmaceuticals. Here, we present the design and development of a versatile and stable linker based on a N-alkylated α,α-dialkyl dipeptide for bioconjugation, with a particular focus on antibody-drug conjugates (ADCs). Starting with the well-known Ugi multicomponent reaction, the convenient chemical modification of the prepared adducts allowed us the obtention of versatile bifunctional linkers for bioconjugation. A conjugation strategy was tested to demonstrate the efficiency of the linker. In addition, a novel cytotoxic anti-HER2 ADC was prepared using the Ugi-linker approach.
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Affiliation(s)
- Iván Ramos-Tomillero
- Institute
for Research in Biomedicine, 08028 Barcelona, Spain
- Department
of Organic Chemistry, University of Barcelona, 08028 Barcelona, Spain
| | - Gema Pérez-Chacon
- Instituto
de Investigaciones Biomédicas “Alberto Sols”,
CSIC-UAM, 28029 Madrid, Spain
| | - Beatriz Somovilla-Crespo
- Servicio
de Inmunología, Instituto de Investigación
Sanitaria Hospital de la Princesa, 28006 Madrid, Spain
| | - Francisco Sánchez-Madrid
- Servicio
de Inmunología, Instituto de Investigación
Sanitaria Hospital de la Princesa, 28006 Madrid, Spain
| | - Carmen Cuevas
- Research
Department, PharmaMar S.A., Colmenar Viejo, 28770 Madrid, Spain
| | - Juan Manuel Zapata
- Instituto
de Investigaciones Biomédicas “Alberto Sols”,
CSIC-UAM, 28029 Madrid, Spain
| | | | - Hortensia Rodríguez
- Institute
for Research in Biomedicine, 08028 Barcelona, Spain
- School of
Chemical Sciences and Engineering, Yachay
Tech University, Yachay City of Knowledge, 100650 Urcuqui, Ecuador
| | - Fernando Albericio
- Institute
for Research in Biomedicine, 08028 Barcelona, Spain
- Department
of Organic Chemistry, University of Barcelona, 08028 Barcelona, Spain
- CIBER-BBN,
Networking Centre on Bioengineering, Biomaterials and Nanomedicine, 08028 Barcelona, Spain
- School
of Chemistry, University of KwaZulu-Natal, 4001 Durban, South Africa
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5
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Budragchaa T, Westermann B, Wessjohann LA. Multicomponent synthesis of α-acylamino and α-acyloxy amide derivatives of desmycosin and their activity against gram-negative bacteria. Bioorg Med Chem 2019; 27:3237-3247. [PMID: 31229422 DOI: 10.1016/j.bmc.2019.05.046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 03/27/2019] [Accepted: 05/29/2019] [Indexed: 11/17/2022]
Abstract
Bacterial resistance to the existing drugs requires constant development of new antibiotics. Developing compounds active against gram-negative bacteria thereby is one of the more challenging tasks. Among the many approaches to develop successful antibacterials, medicinal chemistry driven evolution of existing successful antibiotics is considered to be the most effective one. Towards this end, the C-20 aldehyde moiety of desmycosin was modified into α-acylamino and α-acyloxy amide functionalities using isonitrile-based Ugi and Passerini reactions, aiming for enhanced antibacterial and physicochemical properties. The desired compounds were obtained in 45-93% yield under mild conditions. The antibacterial activity of the resulting conjugates was tested against gram-negative Aliivibrio fischeri. The antibiotic strength is mostly governed by the amine component introduced. Thus, methylamine derived desmycosin bis-amide 4 displayed an enhanced inhibition rate vs. desmycosin (99% vs. 83% at 1 µM). Derivatives with long acyclic or bulky amine and isocyanide Ugi components reduced potency, whereas carboxylic acid reagents with longer chain length afforded increased bioactivity. In Passerini 3-component products, the butyric ester amide 22 displayed a higher activity (90% at 1 µM) than the parent compound desmycosin (2).
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Affiliation(s)
- Tuvshinjargal Budragchaa
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle, Saale, Germany
| | - Bernhard Westermann
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle, Saale, Germany; Institute of Organic Chemistry, Faculty of Natural Sciences II, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Strasse 2, 06120 Halle, Germany
| | - Ludger A Wessjohann
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle, Saale, Germany; Institute of Organic Chemistry, Faculty of Natural Sciences II, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Strasse 2, 06120 Halle, Germany.
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6
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Wiemann J, Fischer (née Heller) L, Kessler J, Ströhl D, Csuk R. Ugi multicomponent-reaction: Syntheses of cytotoxic dehydroabietylamine derivatives. Bioorg Chem 2018; 81:567-576. [DOI: 10.1016/j.bioorg.2018.09.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 08/29/2018] [Accepted: 09/07/2018] [Indexed: 12/29/2022]
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7
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Santos FMF, Domínguez Z, Alcaide MM, Matos AI, Florindo HF, Candeias NR, Gois PMP, Pischel U. Highly Efficient Energy Transfer Cassettes by Assembly of Boronic Acid Derived Salicylidenehydrazone Complexes. CHEMPHOTOCHEM 2018. [DOI: 10.1002/cptc.201800150] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Fábio M. F. Santos
- Research Institute for Medicines (iMed.ULisboa) Faculty of PharmacyUniversity of Lisbon Av. Prof. Gama Pinto 1649-003 Lisbon Portugal
| | - Zoe Domínguez
- CIQSO-Center for Research in Sustainable Chemistry and Department of ChemistryUniversity of Huelva Campus de El Carmen s/n E-21071 Huelva Spain
| | - María M. Alcaide
- CIQSO-Center for Research in Sustainable Chemistry and Department of ChemistryUniversity of Huelva Campus de El Carmen s/n E-21071 Huelva Spain
- Institute for Chemical Research (CSIC-US) Av. Américo Vespucio 49 E-41092 Seville Spain
| | - Ana I. Matos
- Research Institute for Medicines (iMed.ULisboa) Faculty of PharmacyUniversity of Lisbon Av. Prof. Gama Pinto 1649-003 Lisbon Portugal
| | - Helena F. Florindo
- Research Institute for Medicines (iMed.ULisboa) Faculty of PharmacyUniversity of Lisbon Av. Prof. Gama Pinto 1649-003 Lisbon Portugal
| | - Nuno R. Candeias
- Laboratory of Chemistry and BioengineeringTampere University of Technology Korkeakoulunkatu 8 33101 Tampere Finland
| | - Pedro M. P. Gois
- Research Institute for Medicines (iMed.ULisboa) Faculty of PharmacyUniversity of Lisbon Av. Prof. Gama Pinto 1649-003 Lisbon Portugal
| | - Uwe Pischel
- CIQSO-Center for Research in Sustainable Chemistry and Department of ChemistryUniversity of Huelva Campus de El Carmen s/n E-21071 Huelva Spain
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8
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Wang T, Zhang Y, Wei L, Teng YG, Honda T, Ojima I. Design, Synthesis, and Biological Evaluations of Asymmetric Bow-Tie PAMAM Dendrimer-Based Conjugates for Tumor-Targeted Drug Delivery. ACS OMEGA 2018; 3:3717-3736. [PMID: 29732446 PMCID: PMC5928494 DOI: 10.1021/acsomega.8b00409] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 03/19/2018] [Indexed: 06/08/2023]
Abstract
A unique asymmetric bow-tie poly(amidoamine) (PAMAM) dendrimer (ABTD) scaffold was designed and developed as a well-defined macromolecular carrier for tumor-targeted drug delivery. The ABTD scaffold in this study consists of a G3-half-dendron (G3-HD) unit and a G1-half-dendron (G1-HD) unit, bearing thiol moiety in each unit and a bis(maleimide) linker unit, which undergo sequential thiol-maleimide coupling to assemble the scaffold. This assembly methodology is applicable to all other combinations of different generations of PAMAM dendrimers. In the prototype ABTD in this study, 16 biotin moieties were tethered to the G3-HD unit and 4 payloads (new-generation taxoid) to the G1-HD via a self-immolative linker to form an ABTD-tumor-targeting conjugate (ABTD-TTC-1). Two other ABTD-TTCs were synthesized, wherein the G1-HD unit was tethered to a fluorescence-labeled taxoid or to a fluorescent probe. These three ABTD-TTCs were constructed by using a common key ABTD 6 bearing a terminal acetylene group in the G1-HD unit, which was fully characterized as a single molecule by high-resolution mass spectrometry and NMR despite its high molecular weight (Mw: 12 876). Then, the click reaction was employed to couple ABTD 6 with a small-molecule payload or fluorescence probe unit bearing a terminal azide moiety. ABTD-TTC-3, as a surrogate of ABTD-TTC-2, showed substantially enhanced internalization into two cancer cell lines via receptor-mediated endocytosis, attributed to multibinding effect. ABTD-TTC-1 exhibited a remarkable selectivity to cancer cells (1400-7500 times) compared to human normal cells, which demonstrates the salient feature and bright prospect of the ABTD-based tumor-targeted drug-delivery system.
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Affiliation(s)
- Tao Wang
- Department
of Chemistry and Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Yaozhong Zhang
- Department
of Chemistry and Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Longfei Wei
- Department
of Chemistry and Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Yuhan G. Teng
- Department
of Chemistry and Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Tadashi Honda
- Department
of Chemistry and Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Iwao Ojima
- Department
of Chemistry and Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, New York 11794-3400, United States
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9
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Alvim HGO, Correa JR, Assumpção JAF, da Silva WA, Rodrigues MO, de Macedo JL, Fioramonte M, Gozzo FC, Gatto CC, Neto BAD. Heteropolyacid-Containing Ionic Liquid-Catalyzed Multicomponent Synthesis of Bridgehead Nitrogen Heterocycles: Mechanisms and Mitochondrial Staining. J Org Chem 2018; 83:4044-4053. [DOI: 10.1021/acs.joc.8b00472] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
| | | | | | | | | | - Julio L. de Macedo
- Laboratory of Catalysis, Institute of Chemistry, University of Brasília (IQ-UnB), Brasilia 70910-900, Brazil
| | - Mariana Fioramonte
- Institute of Chemistry, Universidade Estadual de Campinas (Unicamp), 13083970, Campinas, SP, Brazil
| | - Fabio C. Gozzo
- Institute of Chemistry, Universidade Estadual de Campinas (Unicamp), 13083970, Campinas, SP, Brazil
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10
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Salomón T, Sibbersen C, Hansen J, Britz D, Svart MV, Voss TS, Møller N, Gregersen N, Jørgensen KA, Palmfeldt J, Poulsen TB, Johannsen M. Ketone Body Acetoacetate Buffers Methylglyoxal via a Non-enzymatic Conversion during Diabetic and Dietary Ketosis. Cell Chem Biol 2017; 24:935-943.e7. [PMID: 28820963 DOI: 10.1016/j.chembiol.2017.07.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 05/12/2017] [Accepted: 07/25/2017] [Indexed: 12/18/2022]
Abstract
The α-oxoaldehyde methylglyoxal is a ubiquitous and highly reactive metabolite known to be involved in aging- and diabetes-related diseases. If not detoxified by the endogenous glyoxalase system, it exerts its detrimental effects primarily by reacting with biopolymers such as DNA and proteins. We now demonstrate that during ketosis, another metabolic route is operative via direct non-enzymatic aldol reaction between methylglyoxal and the ketone body acetoacetate, leading to 3-hydroxyhexane-2,5-dione. This novel metabolite is present at a concentration of 10%-20% of the methylglyoxal level in the blood of insulin-starved patients. By employing a metabolite-alkyne-tagging strategy it is clarified that 3-hydroxyhexane-2,5-dione is further metabolized to non-glycating species in human blood. The discovery represents a new direction within non-enzymatic metabolism and within the use of alkyne-tagging for metabolism studies and it revitalizes acetoacetate as a competent endogenous carbon nucleophile.
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Affiliation(s)
- Trine Salomón
- Department of Forensic Medicine, Aarhus University, Aarhus 8200, Denmark
| | | | - Jakob Hansen
- Department of Forensic Medicine, Aarhus University, Aarhus 8200, Denmark
| | - Dieter Britz
- Department of Chemistry, Aarhus University, Aarhus 8000, Denmark
| | - Mads Vandsted Svart
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus 8000, Denmark
| | - Thomas Schmidt Voss
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus 8000, Denmark
| | - Niels Møller
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus 8000, Denmark
| | - Niels Gregersen
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus 8000, Denmark
| | | | - Johan Palmfeldt
- Department of Clinical Medicine, Aarhus University Hospital, Aarhus 8000, Denmark
| | | | - Mogens Johannsen
- Department of Forensic Medicine, Aarhus University, Aarhus 8200, Denmark.
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11
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de Moliner F, Kielland N, Lavilla R, Vendrell M. Modern Synthetic Avenues for the Preparation of Functional Fluorophores. Angew Chem Int Ed Engl 2017; 56:3758-3769. [PMID: 27907246 PMCID: PMC5396271 DOI: 10.1002/anie.201609394] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Indexed: 12/19/2022]
Abstract
Biomedical research relies on the fast and accurate profiling of specific biomolecules and cells in a non‐invasive manner. Functional fluorophores are powerful tools for such studies. As these sophisticated structures are often difficult to access through conventional synthetic strategies, new chemical processes have been developed in the past few years. In this Minireview, we describe the most recent advances in the design, preparation, and fine‐tuning of fluorophores by means of multicomponent reactions, C−H activation processes, cycloadditions, and biomolecule‐based chemical transformations.
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Affiliation(s)
- Fabio de Moliner
- MRC/UoE Centre for Inflammation Research, The University of Edinburgh, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
| | - Nicola Kielland
- Laboratory of Organic Chemistry, Faculty of Pharmacy, University of Barcelona, Barcelona Science Park, Baldiri Reixac 10-12, Barcelona, 08028, Spain
| | - Rodolfo Lavilla
- Laboratory of Organic Chemistry, Faculty of Pharmacy, University of Barcelona, Barcelona Science Park, Baldiri Reixac 10-12, Barcelona, 08028, Spain.,CIBER-BBN, Networking Centre for Bioengineering, Biomaterials and Nanomedicine, Baldiri Reixac 10-12, Barcelona, 08028, Spain
| | - Marc Vendrell
- MRC/UoE Centre for Inflammation Research, The University of Edinburgh, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK
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12
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de Moliner F, Kielland N, Lavilla R, Vendrell M. Moderne Strategien zur Synthese funktioneller Fluorophore. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201609394] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Fabio de Moliner
- MRC/UoE Centre for Inflammation Research; The University of Edinburgh; 47 Little France Crescent Edinburgh EH16 4TJ Großbritannien
| | - Nicola Kielland
- Laboratory of Organic Chemistry, Faculty of Pharmacy; University of Barcelona; Barcelona Science Park, Baldiri Reixac 10-12 Barcelona 08028 Spanien
| | - Rodolfo Lavilla
- Laboratory of Organic Chemistry, Faculty of Pharmacy; University of Barcelona; Barcelona Science Park, Baldiri Reixac 10-12 Barcelona 08028 Spanien
- CIBER-BBN, Networking Centre for Bioengineering, Biomaterials and Nanomedicine; Baldiri Reixac 10-12 Barcelona 08028 Spanien
| | - Marc Vendrell
- MRC/UoE Centre for Inflammation Research; The University of Edinburgh; 47 Little France Crescent Edinburgh EH16 4TJ Großbritannien
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13
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Passos STA, Correa JR, Soares SLM, da Silva WA, Neto BAD. Fluorescent Peptoids as Selective Live Cell Imaging Probes. J Org Chem 2016; 81:2646-51. [DOI: 10.1021/acs.joc.6b00034] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Saulo T. A. Passos
- Laboratory
of Bioactive Compounds Synthesis N.T.S., University of Brasilia (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasília, DF, Brazil
| | - José R. Correa
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy
Ribeiro, CEP 70904-970, P.O. Box 4478, Brasília, DF, Brazil
| | - Samira L. M. Soares
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy
Ribeiro, CEP 70904-970, P.O. Box 4478, Brasília, DF, Brazil
| | - Wender A. da Silva
- Laboratory
of Bioactive Compounds Synthesis N.T.S., University of Brasilia (IQ-UnB), Campus Universitário Darcy Ribeiro, Brasília, DF, Brazil
| | - Brenno A. D. Neto
- Laboratory
of Medicinal and Technological Chemistry, University of Brasília, Chemistry Institute (IQ-UnB), Campus Universitário Darcy
Ribeiro, CEP 70904-970, P.O. Box 4478, Brasília, DF, Brazil
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14
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Abstract
Multicomponent reactions are a valuable tool for the synthesis of functional π-electron systems. Two different approaches can be taken into account for accessing the target structures. In the more conventional scaffold approach an already existing chromophore is coupled with other components to give a complex functional π-system. Here, electronically monotonous components can also be introduced, which may exert synergistic electronic effects within the novel compound. The more demanding chromophore concept generates a complete π-electron system and a scaffold concurrently. The latter approach is particularly stimulating for methodologists since π-systems might be accessible from simple starting materials. This review encompasses the advances in the preparation of functional π-electron systems via multicomponent processes during the past few years, based both on the scaffold and chromophore concepts. Besides the synthetic strategies the most important properties, i.e. redox potentials, absorption and emission maxima or fluorescence quantum yields, of the synthesized molecules are highlighted.
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Affiliation(s)
- Lucilla Levi
- Institut für Organische Chemie und Makromolekulare Chemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany.
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15
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Hauser C, Wodtke R, Löser R, Pietsch M. A fluorescence anisotropy-based assay for determining the activity of tissue transglutaminase. Amino Acids 2016; 49:567-583. [PMID: 26886924 DOI: 10.1007/s00726-016-2192-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 02/02/2016] [Indexed: 01/10/2023]
Abstract
Tissue transglutaminase (TGase 2) is the most abundantly expressed enzyme of the transglutaminase family and involved in a large variety of pathological processes, such as neurodegenerative diseases, disorders related to autoimmunity and inflammation as well as tumor growth, progression and metastasis. As a result, TGase 2 represents an attractive target for drug discovery and development, which requires assays that allow for the characterization of modulating agents and are appropriate for high-throughput screening. Herein, we report a fluorescence anisotropy-based approach for the determination of TGase 2's transamidase activity, following the time-dependent increase in fluorescence anisotropy due to the enzyme-catalyzed incorporation of fluorescein- and rhodamine B-conjugated cadaverines 1-3 (acyl acceptor substrates) into N,N-dimethylated casein (acyl donor substrate). These cadaverine derivatives 1-3 were obtained by solid-phase synthesis. To allow efficient conjugation of the rhodamine B moiety, different linkers providing secondary amine functions, such as sarcosyl and isonipecotyl, were introduced between the cadaverine and xanthenyl entities in compounds 2 and 3, respectively, with acyl acceptor 3 showing the most optimal substrate properties of the compounds investigated. The assay was validated for the search of both irreversible and reversible TGase 2 inhibitors using the inactivators iodoacetamide and a recently published L-lysine-derived acrylamide and the allosteric binder GTP, respectively. In addition, the fluorescence anisotropy-based method was proven to be suitable for high-throughput screening (Z' factor of 0.86) and represents a non-radioactive and highly sensitive assay for determining the active TGase 2 concentration.
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Affiliation(s)
- Christoph Hauser
- Center of Pharmacology, Medical Faculty, University of Cologne, Gleueler Str. 24, 50931, Cologne, Germany
| | - Robert Wodtke
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstr. 400, 01328, Dresden, Germany
- Department of Chemistry and Food Chemistry, Technical University Dresden, Mommsenstraße 4, 01062, Dresden, Germany
| | - Reik Löser
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstr. 400, 01328, Dresden, Germany.
- Department of Chemistry and Food Chemistry, Technical University Dresden, Mommsenstraße 4, 01062, Dresden, Germany.
| | - Markus Pietsch
- Center of Pharmacology, Medical Faculty, University of Cologne, Gleueler Str. 24, 50931, Cologne, Germany.
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16
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Elabd AA. A new fluorescent sensor for determination of thorium by thin film of 2-(acetyloxy)-N-(5-nitro-2-thiazolyl)-benzamide embedded in sol–gel matrix. RSC Adv 2016. [DOI: 10.1039/c6ra04226k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
A new “turn-off” fluorescent sensor for determination of thorium (Th(iv)) by thin film of 2-(acetyloxy)-N-(5-nitro-2-thiazolyl)-benzamide (L) embedded in sol–gel matrix was introduced.
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Affiliation(s)
- A. A. Elabd
- Nuclear Safeguards and Physical Protection Department
- Nuclear and Radiological Regulatory Authority (NRRA)
- Cairo
- Egypt
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17
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Sibbersen C, Lykke L, Gregersen N, Jørgensen KA, Johannsen M. A cleavable azide resin for direct click chemistry mediated enrichment of alkyne-labeled proteins. Chem Commun (Camb) 2015; 50:12098-100. [PMID: 25168178 DOI: 10.1039/c4cc05246c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The direct conjugation of a labeled proteome to a cleavable azide resin utilizing the copper-catalyzed azide alkyne cycloaddition is demonstrated. The procedure omits the classical streptavidin- and biotin-based affinity enrichment step and represents an operationally simpler, cheaper and less contaminated alternative for protein purification.
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Affiliation(s)
- Christian Sibbersen
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark.
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18
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Sulfur, selenium and tellurium pseudopeptides: Synthesis and biological evaluation. Bioorg Med Chem 2014; 22:3610-9. [DOI: 10.1016/j.bmc.2014.05.019] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 05/09/2014] [Accepted: 05/12/2014] [Indexed: 01/28/2023]
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19
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Sibbersen C, Palmfeldt J, Hansen J, Gregersen N, Jørgensen KA, Johannsen M. Development of a chemical probe for identifying protein targets of α-oxoaldehydes. Chem Commun (Camb) 2013; 49:4012-4. [PMID: 23563755 DOI: 10.1039/c3cc41099d] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The development of a chemical probe for identifying the protein targets of reactive electrophilic α-oxoaldehydes such as methylglyoxal is presented. The probe is evaluated against methylglyoxal using human serum albumin as well as using living cells and lysates.
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Affiliation(s)
- Christian Sibbersen
- Department of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
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20
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1-Thiacyclooct-4-yne (=5,6-Didehydro-3,4,7,8-tetrahydro-2H-thiocin), and Its Sulfoxide and Its Sulfone. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201200260] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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21
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Bush JT, Walport LJ, McGouran JF, Leung IKH, Berridge G, van Berkel SS, Basak A, Kessler BM, Schofield CJ. The Ugi four-component reaction enables expedient synthesis and comparison of photoaffinity probes. Chem Sci 2013. [DOI: 10.1039/c3sc51708j] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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22
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Sokolova NV, Nenajdenko VG. Recent advances in the Cu(i)-catalyzed azide–alkyne cycloaddition: focus on functionally substituted azides and alkynes. RSC Adv 2013. [DOI: 10.1039/c3ra42482k] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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23
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Neves Filho RAW, Stark S, Westermann B, Wessjohann LA. The multicomponent approach to N-methyl peptides: total synthesis of antibacterial (-)-viridic acid and analogues. Beilstein J Org Chem 2012; 8:2085-90. [PMID: 23209543 PMCID: PMC3511043 DOI: 10.3762/bjoc.8.234] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 10/30/2012] [Indexed: 12/18/2022] Open
Abstract
Two syntheses of natural viridic acid, an unusual triply N-methylated peptide with two anthranilate units, are presented. The first one is based on peptide-coupling strategies and affords the optically active natural product in 20% overall yield over six steps. A more economical approach with only four steps leads to the similarly active racemate by utilizing a Ugi four-component reaction (Ugi-4CR) as the key transformation. A small library of viridic acid analogues is readily available to provide first SAR insight. The biological activities of the natural product and its derivatives against the Gram-negative bacterium Aliivibrio fischeri were evaluated.
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Affiliation(s)
- Ricardo A W Neves Filho
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany, Tel: +49 345 5582 1301, Address for correspondence)
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4-Isocyanopermethylbutane-1,1,3-triol (IPB): a convertible isonitrile for multicomponent reactions. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.07.064] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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25
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Multidimensional nano-HPLC coupled with tandem mass spectrometry for analyzing biotinylated proteins. Anal Bioanal Chem 2012; 405:2163-73. [DOI: 10.1007/s00216-012-6057-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Revised: 04/12/2012] [Accepted: 04/16/2012] [Indexed: 10/28/2022]
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26
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van Berkel SS, Bögels BGM, Wijdeven MA, Westermann B, Rutjes FPJT. Recent Advances in Asymmetric Isocyanide-Based Multicomponent Reactions. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200030] [Citation(s) in RCA: 178] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Wang J, Yang Q, Song H, Zhang W. A fluorescent probe of N′-formyl-rhodamine B hydrazide: structure and spectral properties of protonation behaviour. Org Biomol Chem 2012; 10:7677-80. [DOI: 10.1039/c2ob26288f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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