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Sibbersen C, Schou Oxvig AM, Bisgaard Olesen S, Nielsen CB, Galligan JJ, Jørgensen KA, Palmfeldt J, Johannsen M. Profiling of Methylglyoxal Blood Metabolism and Advanced Glycation End-Product Proteome Using a Chemical Probe. ACS Chem Biol 2018; 13:3294-3305. [PMID: 30508371 DOI: 10.1021/acschembio.8b00732] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Methylglyoxal (MG) is quantitatively the most important precursor to advanced glycation end-products (AGEs), and evidence is accumulating that it is also a causally linked to diabetes and aging related diseases. Living systems primarily reside on the glyoxalase system to detoxify MG into benign d-lactate. The flux to either glycation or detoxification, accordingly, is a key parameter for how well a system handles the ubiquitous glyoxal burden. Furthermore, insight into proteins and in particular their individual modification sites are central to understanding the involvement of MG and AGE in diabetes and aging related diseases. Here, we present a simple method to simultaneously monitor the flux of MG both to d-lactate and to protein AGE formation in a biological sample by employing an alkyne-labeled methylglyoxal probe. We apply the method to blood and plasma to demonstrate the impact of blood cell glyoxalase activity on plasma protein AGE formation. We move on to isolate proteins modified by the MG probe and accordingly can present the first general inventory of more than 100 proteins and 300 binding sites of the methylglyoxal probe on plasma as well as erythrocytic proteins. Some of the data could be validated against a number of in vivo and in vitro targets for advanced glycation previously known from the literature; the majority of proteins and specific sites however were previously unknown and may guide future research into MG and AGE to elucidate how these are functionally linked to diabetic disease and aging.
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Hammer N, Erickson JD, Lauridsen VH, Jakobsen JB, Hansen BK, Jacobsen KM, Poulsen TB, Jørgensen KA. Catalytic Asymmetric [4+2]‐Cycloadditions Using Tropolones: Developments, Scope, Transformations, and Bioactivity. Angew Chem Int Ed Engl 2018; 57:13216-13220. [DOI: 10.1002/anie.201808221] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 08/13/2018] [Indexed: 11/09/2022]
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54
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Yu P, He CQ, Simon A, Li W, Mose R, Thøgersen MK, Jørgensen KA, Houk KN. Organocatalytic [6+4] Cycloadditions via Zwitterionic Intermediates: Chemo-, Regio-, and Stereoselectivities. J Am Chem Soc 2018; 140:13726-13735. [DOI: 10.1021/jacs.8b07575] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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55
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Leth LA, Næsborg L, Reyes-Rodríguez GJ, Tobiesen HN, Iversen MV, Jørgensen KA. Enantioselective Oxidative Coupling of Carboxylic Acids to α-Branched Aldehydes. J Am Chem Soc 2018; 140:12687-12690. [DOI: 10.1021/jacs.8b07394] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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56
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Hammer N, Erickson JD, Lauridsen VH, Jakobsen JB, Hansen BK, Jacobsen KM, Poulsen TB, Jørgensen KA. Catalytic Asymmetric [4+2]‐Cycloadditions Using Tropolones: Developments, Scope, Transformations, and Bioactivity. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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57
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Naesborg L, Leth LA, Reyes-Rodríguez GJ, Palazzo TA, Corti V, Jørgensen KA. Direct Enantio- and Diastereoselective Oxidative Homocoupling of Aldehydes. Chemistry 2018; 24:14844-14848. [DOI: 10.1002/chem.201803506] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Indexed: 11/10/2022]
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58
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Donslund BS, Jessen NI, Bertuzzi G, Giardinetti M, Palazzo TA, Christensen ML, Jørgensen KA. Catalytic Enantioselective [10+4] Cycloadditions. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807830] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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59
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Poulsen PH, Li Y, Lauridsen VH, Jørgensen DKB, Palazzo TA, Meazza M, Jørgensen KA. Organocatalytic Formation of Chiral Trisubstituted Allenes and Chiral Furan Derivatives. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806238] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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60
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Poulsen PH, Li Y, Lauridsen VH, Jørgensen DKB, Palazzo TA, Meazza M, Jørgensen KA. Organocatalytic Formation of Chiral Trisubstituted Allenes and Chiral Furan Derivatives. Angew Chem Int Ed Engl 2018; 57:10661-10665. [DOI: 10.1002/anie.201806238] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 06/15/2018] [Indexed: 01/17/2023]
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Izzo JA, Poulsen PH, Intrator JA, Jørgensen KA, Vetticatt MJ. Isotope Effects Reveal an Alternative Mechanism for "Iminium-Ion" Catalysis. J Am Chem Soc 2018; 140:8396-8400. [PMID: 29940119 PMCID: PMC6238210 DOI: 10.1021/jacs.8b04856] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A novel mechanism for the epoxidation of enals with hydrogen peroxide catalyzed by diarylprolinol silyl ether supported by experimental 13C kinetic isotope effects (KIEs) and density functional theory calculations is presented. Normal 13C KIEs, measured on both the carbonyl- and β-carbon atoms of the enal, suggest participation of both carbon atoms in the rate-determining step. Calculations show that the widely accepted iminium-ion mechanism does not account for this experimental observation. A syn-SN2' substitution mechanism, which avoids formation of a discrete iminium-ion intermediate, emerges as the most likely mechanism based on agreement between experimental and predicted KIEs.
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Naesborg L, Corti V, Leth LA, Poulsen PH, Jørgensen KA. Catalytic Asymmetric Oxidative γ-Coupling of α,β-Unsaturated Aldehydes with Air as the Terminal Oxidant. Angew Chem Int Ed Engl 2018; 57:1606-1610. [DOI: 10.1002/anie.201711944] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Indexed: 11/05/2022]
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63
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Naesborg L, Corti V, Leth LA, Poulsen PH, Jørgensen KA. Catalytic Asymmetric Oxidative γ-Coupling of α,β-Unsaturated Aldehydes with Air as the Terminal Oxidant. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711944] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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64
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Donslund BS, Monleón A, Palazzo TA, Christensen ML, Dahlgaard A, Erickson JD, Jørgensen KA. Organocatalytic Enantioselective Higher-Order Cycloadditions of In Situ Generated Amino Isobenzofulvenes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201710694] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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65
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Paz BM, Li Y, Thøgersen MK, Jørgensen KA. Enantioselective synthesis of cyclopenta[ b]benzofurans via an organocatalytic intramolecular double cyclization. Chem Sci 2017; 8:8086-8093. [PMID: 29568457 PMCID: PMC5855134 DOI: 10.1039/c7sc03006a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Accepted: 09/30/2017] [Indexed: 12/16/2022] Open
Abstract
An enantioselective organocatalytic strategy, combining Brønsted base and N-heterocyclic carbene catalysis in a unique manner, is demonstrated for a concise construction of the privileged cyclopenta[b]benzofuran scaffold, present in many bioactive compounds having both academic and commercial interests. The reaction concept relies on an intramolecular one-pot double cyclization involving a cycle-specific enantioselective Michael addition followed by a benzoin condensation of ortho-substituted cinnamaldehydes. Cyclopenta[b]benzofurans were achieved in moderate to good yields, with excellent stereoselectivities. A proof of principle for a diastereodivergent variation is demonstrated through the synthesis of cyclopenta[b]benzofurans containing two contiguous aromatic substituents in a substitution pattern present in commercial and natural compounds. Furthermore, several transformations have been performed, demonstrating the synthetic utility of the products. Finally, insights into the activation mode and stereoindution models are presented for this new synthetic strategy.
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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: 28] [Impact Index Per Article: 4.0] [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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Blom J, Vidal-Albalat A, Jørgensen J, Barløse CL, Jessen KS, Iversen MV, Jørgensen KA. Directing the Activation of Donor-Acceptor Cyclopropanes Towards Stereoselective 1,3-Dipolar Cycloaddition Reactions by Brønsted Base Catalysis. Angew Chem Int Ed Engl 2017; 56:11831-11835. [DOI: 10.1002/anie.201706150] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Indexed: 12/13/2022]
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68
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Blom J, Vidal-Albalat A, Jørgensen J, Barløse CL, Jessen KS, Iversen MV, Jørgensen KA. Directing the Activation of Donor-Acceptor Cyclopropanes Towards Stereoselective 1,3-Dipolar Cycloaddition Reactions by Brønsted Base Catalysis. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706150] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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69
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Palazzo TA, Mose R, Jørgensen KA. Cover Picture: Cycloaddition Reactions: Why Is It So Challenging To Move from Six to Ten Electrons? (Angew. Chem. Int. Ed. 34/2017). Angew Chem Int Ed Engl 2017. [DOI: 10.1002/anie.201706514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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70
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Palazzo TA, Mose R, Jørgensen KA. Titelbild: Cycloadditionen: Warum ist der Übergang von sechs zu zehn Elektronen so schwer? (Angew. Chem. 34/2017). Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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71
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Palazzo TA, Mose R, Jørgensen KA. Cycloadditionen: Warum ist der Übergang von sechs zu zehn Elektronen so schwer? Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701085] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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72
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Meazza M, Leth LA, Erickson JD, Jørgensen KA. Indium(III)-catalyzed Aza-Conia-Ene Reaction for the Synthesis of Indolizines. Chemistry 2017; 23:7905-7909. [PMID: 28444826 DOI: 10.1002/chem.201701820] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Indexed: 01/03/2023]
Abstract
A new indium(III)-catalyzed reaction for the synthesis of a series of indolizine scaffolds has been developed. This methodology was highly efficient, allowing a low catalyst loading of 2 mol % (down to 0.5 mol %) and rendering the products in high yields through a 5-exo-dig aza-Conia-ene reaction. Furthermore, the possibility of incorporating an electrophile into the generated pyrrolidone ring in a one-pot synergistic fashion was demonstrated. Finally, based on experimental observations, a mechanism proposal was outlined.
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Holmquist EF, B Keiding U, Kold-Christensen R, Salomón T, Jørgensen KA, Kristensen P, Poulsen TB, Johannsen M. ReactELISA: Monitoring a Carbon Nucleophilic Metabolite by ELISA-a Study of Lipid Metabolism. Anal Chem 2017; 89:5066-5071. [PMID: 28376300 DOI: 10.1021/acs.analchem.7b00507] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We here present a conceptually novel reaction-based ELISA principle (ReactELISA) for quantitation of the carbon nucleophilic lipid metabolite acetoacetate. Key to the assay is the utilization of a highly chemoselective Friedländer reaction that captures and simultaneously stabilizes the nucleophilic metabolite directly in the biological matrix. By developing a bifunctional biotinylated capture probe, the Friedländer-acetoacetate adduct can be trapped and purified directly in streptavidin coated wells. Finally, we outline the selection and refinement of a highly selective recombinant antibody for specific adduct quantitation. The setup is very robust and, as we demonstrate via miniaturization for microplate format, amenable for screening of compounds or interventions that alter lipid metabolism in liver cell cultures. The assay-principle should be extendable to quantitation of other nucleophilic or electrophilic and perhaps even more reactive metabolites provided suitable capture probes and antibodies.
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Li Y, Ibsen L, Jørgensen KA. Formal Asymmetric α-Alkenylation of Aldehydes and the Synthetic Application toward Forming α-exo-Methylene-γ-butyrolactones and Skipped Dienes. Org Lett 2017; 19:1200-1203. [DOI: 10.1021/acs.orglett.7b00254] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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75
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Meazza M, Tur F, Hammer N, Jørgensen KA. Synergistic Diastereo- and Enantioselective Functionalization of Unactivated Alkyl Quinolines with α,β-Unsaturated Aldehydes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611306] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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