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Li Y, Zhao H, Ren Y, Qiu M, Zhang H, Gao G, Zheng L, Stavropoulos P, Ai L. Synthesis of Enantiomers of Chiral Ester Derivatives Containing an Amide Group and Their Chiral Recognition by
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H NMR Spectroscopy. ChemistrySelect 2023. [DOI: 10.1002/slct.202204039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- Yan‐Lin Li
- College of Chemistry Beijing Normal University Beijing 100875 P. R. China
| | - Hong‐Mei Zhao
- State Key Laboratory of Information Photonics and Communications, School of Science Beijing University of Posts and Telecommunications Beijing 100876 P. R. China
| | - Yu‐Qing Ren
- College of Chemistry Beijing Normal University Beijing 100875 P. R. China
| | - Meng Qiu
- College of Chemistry Beijing Normal University Beijing 100875 P. R. China
| | - Hai‐Tong Zhang
- College of Chemistry Beijing Normal University Beijing 100875 P. R. China
| | - Guang‐Peng Gao
- College of Chemistry Beijing Normal University Beijing 100875 P. R. China
| | - Li Zheng
- College of Chemistry Beijing Normal University Beijing 100875 P. R. China
| | - Pericles Stavropoulos
- Department of Chemistry Missouri University of Science and Technology Rolla, Missouri 65409 USA
| | - Lin Ai
- College of Chemistry Beijing Normal University Beijing 100875 P. R. China
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Radaelli A, Ortiz D, Michelotti A, Roche M, Hata R, Sando S, Bonny O, Gruetter R, Yoshihara HAI. Hyperpolarized (1- 13C)Alaninamide Is a Multifunctional In Vivo Sensor of Aminopeptidase N Activity, pH, and CO 2. ACS Sens 2022; 7:2987-2994. [PMID: 36194687 DOI: 10.1021/acssensors.2c01203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Spin hyperpolarization enables real-time metabolic imaging of carbon-13-labeled substrates. While hyperpolarized l-(1-13C)alaninamide is a probe of the cell-surface tumor marker aminopeptidase-N (APN, CD13), its activity in vivo has not been described. Scanning the kidneys of rats infused with hyperpolarized alaninamide shows both conversion to [1-13C]alanine and several additional spectral peaks with distinct temporal dynamics. The (1-13C)alaninamide chemical shift is pH-sensitive, with a pKa of 7.9 at 37 °C, and the peaks correspond to at least three different compartments of pH 7.46 ± 0.02 (1), 7.21 ± 0.02 (2), and 6.58 ± 0.05 (3). An additional peak was assigned to the carboxyamino adduct formed by reaction with dissolved CO2. Spectroscopic imaging showed nonuniform distribution, with the low-pH signal more concentrated in the inner medulla. Treatment with the diuretic acetazolamide resulted in significant pH shifts in compartment 1 to 7.38 ± 0.03 (p = 0.0057) and compartment 3 to 6.80 ± 0.05 (p = 0.0019). While the pH of compartment 1 correlates with blood pH, the pH of compartment 3 did not correspond to the pH of urine. In vitro experiments show that alaninamide readily enters blood cells and can detect intracellular pH. While carbamate formation depends on pH and pCO2, the carbamate-to-alaninamide ratio did not correlate with either arterial blood pH or pCO2, suggesting that it may reflect variations in tissue pH and pCO2. This study demonstrates the feasibility of using hyperpolarized sensors to simultaneously image enzyme activity, pCO2, and pH in vivo.
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Affiliation(s)
- Alice Radaelli
- Laboratory for Functional and Metabolic Imaging (LIFMET), Institute of Physics, EPFL, 1015Lausanne, Switzerland
| | - Daniel Ortiz
- Mass Spectrometry Platform, Institute of Chemical Sciences and Engineering (ISIC), EPFL, 1015Lausanne, Switzerland
| | | | - Maxime Roche
- CortecNet, 7 Avenue du Hoggar, 91940Les Ulis, France
| | - Ryunosuke Hata
- Department of Chemistry and Biotechnology, The University of Tokyo, Tokyo113-8656, Japan
| | - Shinsuke Sando
- Department of Chemistry and Biotechnology, The University of Tokyo, Tokyo113-8656, Japan
| | - Olivier Bonny
- Service of Nephrology, Department of Medicine, Lausanne University Hospital (CHUV), 1011Lausanne, Switzerland
| | - Rolf Gruetter
- Laboratory for Functional and Metabolic Imaging (LIFMET), Institute of Physics, EPFL, 1015Lausanne, Switzerland
| | - Hikari A I Yoshihara
- Laboratory for Functional and Metabolic Imaging (LIFMET), Institute of Physics, EPFL, 1015Lausanne, Switzerland
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Barabás B, Zucchi C, Maioli M, Micskei K, Pályi G. Stochastic and empirical models of the absolute asymmetric synthesis by the Soai-autocatalysis. J Mol Model 2015; 21:33. [PMID: 25644371 DOI: 10.1007/s00894-015-2576-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 01/04/2015] [Indexed: 11/25/2022]
Abstract
Absolute asymmetric synthesis (AAS) is the preparation of pure (or excess of one) enantiomer of a chiral compound from achiral precursor(s) by a chemical reaction, without enantiopure chiral additive and/or without applied asymmetric physical field. Only one well-characterized example of AAS is known today: the Soai-autocatalysis. In an attempt at clarification of the mechanism of this particular reaction we have undertaken empirical and stochastic analysis of several parallel AAS experiments. Our results show that the initial steps of the reaction might be controlled by simple normal distribution ("coin tossing") formalism. Advanced stages of the reaction, however, appear to be of a more complicated nature. Symmetric beta distribution formalism could not be brought into correspondence with the experimental observations. A bimodal beta distribution algorithm provided suitable agreement with the experimental data. The parameters of this bimodal beta function were determined by a Pólya-urn experiment (simulated by computer). Interestingly, parameters of the resulting bimodal beta function give a golden section ratio. These results show, that in this highly interesting autocatalysis two or even perhaps three catalytic cycles are cooperating. An attempt at constructing a "designed" Soai-type reaction system has also been made.
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Affiliation(s)
- Béla Barabás
- Institute of Mathematics, University of Technology and Economics of Budapest, 1111, Budapest, Műegyetem rkp. 3/H, Hungary
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Seitkalieva MM, Grachev AA, Egorova KS, Ananikov VP. Nanoscale organization of ionic liquids and their interaction with peptides probed by 13C NMR spectroscopy. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.02.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Simplified syntheses of the water-soluble chiral shift reagents Sm-(R)-pdta and Sm-(S)-pdta. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.09.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Chiral Derivatizing Agents, Macrocycles, Metal Complexes, and Liquid Crystals for Enantiomer Differentiation in NMR Spectroscopy. Top Curr Chem (Cham) 2013; 341:1-68. [DOI: 10.1007/128_2013_433] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Vanossi D, Benassi R, Parenti F, Tassinari F, Giovanardi R, Florini N, De Renzi V, Arnaud G, Fontanesi C. Functionalization of glassy carbon surface by means of aliphatic and aromatic amino acids. An experimental and theoretical integrated approach. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.04.128] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Perez-Gavilan A, Carroll PJ, Sneddon LG. Efficient and Systematic Click-Based Synthetic Routes to Amino Acid Functionalized Metallatricarbadecaboranes. Organometallics 2011. [DOI: 10.1021/om201044r] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ariane Perez-Gavilan
- Department of Chemistry, University of Pennsylvania, Philadelphia,
Pennsylvania 19104-6323, United States
| | - Patrick J. Carroll
- Department of Chemistry, University of Pennsylvania, Philadelphia,
Pennsylvania 19104-6323, United States
| | - Larry G. Sneddon
- Department of Chemistry, University of Pennsylvania, Philadelphia,
Pennsylvania 19104-6323, United States
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Micskei K, Patonay T, Caglioti L, Pályi G. Amino Acid Ligand Chirality for Enantioselective Syntheses. Chem Biodivers 2010; 7:1660-9. [DOI: 10.1002/cbdv.200900325] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Aqueous-phase quantitative NMR determination of amino acid enantiomer ratio by 13C-NMR using chiral neodymium shift reagent. Amino Acids 2009; 38:1343-50. [DOI: 10.1007/s00726-009-0341-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2009] [Accepted: 08/14/2009] [Indexed: 10/20/2022]
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Fast enantioselective amino acid quantitative 13C NMR determination by a praseodymium chiral shift reagent. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.05.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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