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Montes AS, León EI, Martin A, Pérez-Martín I, Suárez E. Free‐Radical Epimerization of D‐ into L‐C‐(glycosyl)methanol Compounds Using 1,5‐Hydrogen Atom Transfer Reaction. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Adrián S. Montes
- IPNA: Instituto de Productos Naturales y Agrobiologia Síntesis de Productos Naturales Avda. Astrofisico Francisco Sanchez 3 38206 La Laguna SPAIN
| | - Elisa I León
- IPNA: Instituto de Productos Naturales y Agrobiologia Síntesis de Productos Naturales Avda. Astrofisico Francisco Sanchez 3 38206 La Laguna SPAIN
| | - Angeles Martin
- Instituto de Productos Naturales Y Agrobiolog�a, CSIC Sintesis de Productos Naturales Avda. Astrofisico Fco. Sanchez 3 38205 La Laguna SPAIN
| | - Inés Pérez-Martín
- IPNA: Instituto de Productos Naturales y Agrobiologia Síntesis de Productos Naturales Avda. Astrofisico Francisco Sanchez 3 38206 La Laguna SPAIN
| | - Ernesto Suárez
- IPNA: Instituto de Productos Naturales y Agrobiologia Síntesis de Productos Naturales Avda. Astrofisico Francisco Sanchez 3 38206 La Laguna SPAIN
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2
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Shuto S. [Medicinal Chemical Studies Based on the Theoretical Design of Bioactive Compounds]. YAKUGAKU ZASSHI 2020; 140:329-344. [PMID: 32115550 DOI: 10.1248/yakushi.19-00208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
I have engaged in medicinal chemical studies based on the theoretical design of bioactive compounds. First, I present a three-dimensional structural diversity-oriented conformational restriction strategy for developing bioactive compounds based on the characteristic steric and stereoelectronic features of cyclopropane. Using this strategy, various biologically active small molecule compounds, such as receptor agonists/antagonists and enzyme inhibitors, were effectively developed. The strategy was also applied to develop versatile peptidomimetics and membrane-permeable cyclic peptides. Next, studies on Ca2+-mobilizing second messengers, cyclic ADP-ribose (cADPR) and myo-inositol trisphosphates (IP3), are described. In these studies, stable equivalents of cADPR were developed, since biological studies of cADPR have been limited due to its instability. Various potent IP3 receptor ligands, which were designed using the d-glucose structure as a bioisostere of the myo-inositol moiety of IP3, have been identified. Organic chemistry studies have also been extensively performed, because excellent organic chemistry is essential for promoting high-level medicinal chemical studies. For examples, new methods for the synthesis of chiral cyclopropanes, new radical reactions with silicon tethers, and kinetic anomeric effect-dependent stereoselective glycosidations have been developed.
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Affiliation(s)
- Satoshi Shuto
- Faculty of Pharmaceutical Sciences, Hokkaido University
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Khuu T, Anick D, Shultz MJ. Matrix Isolation Spectroscopy: Aqueous p-Toluenesulfonic Acid Solvation. J Phys Chem A 2018; 122:762-772. [PMID: 29292995 DOI: 10.1021/acs.jpca.7b08939] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Interaction between p-toluenesulfonic acid (pTSA) and water is studied at -20 °C in a CCl4 matrix. In CCl4 water exists as monomers with restricted rotational motion about its symmetry axis. Additionally, CCl4 is transparent in the hydrogen-bonded region; CCl4 thus constitutes an excellent ambient thermal energy matrix isolation medium for diagnosing interactions with water. Introducing pTSA-nH2O gives rise to two narrow resonances at 3642 cm-1 and at 2835 cm-1 plus a broad 3000-3550 cm-1 absorption. In addition, negative monomer symmetric and asymmetric stretch features relative to nominally dry CCl4 indicate that fewer water monomers exist in the cooled (-20 °C) acid solution than in room-temperature anhydrous CCl4. The negative peaks along with the broad absorption band indicate that water monomers are incorporated into clusters. The 3642 cm-1 resonance is assigned to the OH-π interaction with a cluster containing many water molecules per acid molecule. The 2835 cm-1 resonance is assigned to the (S-)O-H stretch of pTSA-dihydrate. The coexistence of these two species provides insights into interactions in this acid-water CCl4 system.
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Affiliation(s)
- Thien Khuu
- Laboratory for Aqueous and Surface Studies, Tufts University , Pearson Building, Medford, Massachusetts 02155, United States
| | - David Anick
- Laboratory for Aqueous and Surface Studies, Tufts University , Pearson Building, Medford, Massachusetts 02155, United States
| | - Mary Jane Shultz
- Laboratory for Aqueous and Surface Studies, Tufts University , Pearson Building, Medford, Massachusetts 02155, United States
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Walton JC, Kanada R, Iwamoto T, Shuto S, Abe H. Tethered 1,2-Si-Group Migrations in Radical-Mediated Ring Enlargements of Cyclic Alkoxysilanes: An EPR Spectroscopic and Computational Investigation. J Org Chem 2017; 82:6886-6894. [PMID: 28581743 DOI: 10.1021/acs.joc.7b01011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
5- to 6-member ring enlargements of 3-oxa-2-silacyclopentylmethyl to 4-oxa-3-silacyclohexyl radicals were investigated by EPR spectroscopy and QM computations of model indano-oxasilacyclopentane and oxasilinanyl compounds. Both experimental and computational evidence favored a mechanism via a concerted 1,2-migration of the "tethered" Si-group. Thus, the "forbidden" 1,2-Si-group migration from carbon to carbon becomes allowed when the Si-group is "tethered". The EPR data from 3-oxa-2-silacyclopentylmethyl radicals disclosed ground state conformations having semioccupied p-orbitals close to antiperiplanar with respect to their β-Si-C bonds, but indicated Si-hyperconjugation (β-silicon effect) was insignificant in radicals. Kinetic data was obtained by the steady state EPR method for ring enlargement of indano-3-oxa-2-silacyclopentylmethyl radicals. The scope of the novel rearrangement in terms of other ring types and sizes, as well as the analogous 1,2-migration of "tethered" C-centered groups, was explored computationally.
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Affiliation(s)
- John C Walton
- EaStCHEM School of Chemistry, University of St. Andrews , St. Andrews, Fife, KY16 9ST, U.K
| | - Ryutaro Kanada
- Graduate School of Pharmaceutical Sciences, Hokkaido University , Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Takeaki Iwamoto
- Department of Chemistry, Graduate School of Science, Tohoku University , 980-8578 Sendai, Japan
| | - Satoshi Shuto
- Graduate School of Pharmaceutical Sciences, Hokkaido University , Kita-12, Nishi-6, Kita-ku, Sapporo 060-0812, Japan
| | - Hiroshi Abe
- Department of Chemistry, Graduate School of Science, Nagoya University , Furo, Chikusa, Nagoya 464-8602, Japan
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5
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Affiliation(s)
- Tobias Gylling Frihed
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm Platz 1 45470 Mülheim an der Ruhr Germany
| | - Mikael Bols
- Department of Chemistry; University of Copenhagen; Universitetsparken 5 2100 Copenhagen Denmark
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Nechab M, Mondal S, Bertrand MP. 1,n-Hydrogen-Atom Transfer (HAT) Reactions in Whichn≠5: An Updated Inventory. Chemistry 2014; 20:16034-59. [DOI: 10.1002/chem.201403951] [Citation(s) in RCA: 167] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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7
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Fu W, Zhu M, Xu F, Fu Y, Xu C, Zou D. An approach to 6-trifluoromethyl-phenanthridines through visible-light-mediated intramolecular radical cyclization of trifluoroacetimidoyl chlorides. RSC Adv 2014. [DOI: 10.1039/c4ra02384f] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Guyenne S, León EI, Martín A, Pérez-Martín I, Suárez E. Intramolecular 1,8-Hydrogen Atom Transfer Reactions in Disaccharide Systems Containing Furanose Units. J Org Chem 2012; 77:7371-91. [DOI: 10.1021/jo301153u] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Sabrina Guyenne
- Instituto de Productos Naturales y Agrobiología del CSIC, Carretera de La Esperanza 3, 38206 La Laguna,
Tenerife, Spain
| | - Elisa I. León
- Instituto de Productos Naturales y Agrobiología del CSIC, Carretera de La Esperanza 3, 38206 La Laguna,
Tenerife, Spain
| | - Angeles Martín
- Instituto de Productos Naturales y Agrobiología del CSIC, Carretera de La Esperanza 3, 38206 La Laguna,
Tenerife, Spain
| | - Inés Pérez-Martín
- Instituto de Productos Naturales y Agrobiología del CSIC, Carretera de La Esperanza 3, 38206 La Laguna,
Tenerife, Spain
| | - Ernesto Suárez
- Instituto de Productos Naturales y Agrobiología del CSIC, Carretera de La Esperanza 3, 38206 La Laguna,
Tenerife, Spain
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Campolo D, Gaudel-Siri A, Mondal S, Siri D, Besson E, Vanthuyne N, Nechab M, Bertrand MP. Mechanistic Investigation of Enediyne-Connected Amino Ester Rearrangement. Theoretical Rationale for the Exclusive Preference for 1,6- or 1,5-Hydrogen Atom Transfer Depending on the Substrate. A Potential Route to Chiral Naphthoazepines. J Org Chem 2012; 77:2773-83. [DOI: 10.1021/jo202580y] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Damien Campolo
- Institut
de Chimie Radicalaire, CNRS UMR 7273, Equipes CMO and
CTM, and ‡ISM2, CNRS UMR 7313, Equipe Chirosciences, Aix-Marseille Université, 13397 Cedex 20, Marseille, France
| | - Anouk Gaudel-Siri
- Institut
de Chimie Radicalaire, CNRS UMR 7273, Equipes CMO and
CTM, and ‡ISM2, CNRS UMR 7313, Equipe Chirosciences, Aix-Marseille Université, 13397 Cedex 20, Marseille, France
| | - Shovan Mondal
- Institut
de Chimie Radicalaire, CNRS UMR 7273, Equipes CMO and
CTM, and ‡ISM2, CNRS UMR 7313, Equipe Chirosciences, Aix-Marseille Université, 13397 Cedex 20, Marseille, France
| | - Didier Siri
- Institut
de Chimie Radicalaire, CNRS UMR 7273, Equipes CMO and
CTM, and ‡ISM2, CNRS UMR 7313, Equipe Chirosciences, Aix-Marseille Université, 13397 Cedex 20, Marseille, France
| | - Eric Besson
- Institut
de Chimie Radicalaire, CNRS UMR 7273, Equipes CMO and
CTM, and ‡ISM2, CNRS UMR 7313, Equipe Chirosciences, Aix-Marseille Université, 13397 Cedex 20, Marseille, France
| | - Nicolas Vanthuyne
- Institut
de Chimie Radicalaire, CNRS UMR 7273, Equipes CMO and
CTM, and ‡ISM2, CNRS UMR 7313, Equipe Chirosciences, Aix-Marseille Université, 13397 Cedex 20, Marseille, France
| | - Malek Nechab
- Institut
de Chimie Radicalaire, CNRS UMR 7273, Equipes CMO and
CTM, and ‡ISM2, CNRS UMR 7313, Equipe Chirosciences, Aix-Marseille Université, 13397 Cedex 20, Marseille, France
| | - Michèle P. Bertrand
- Institut
de Chimie Radicalaire, CNRS UMR 7273, Equipes CMO and
CTM, and ‡ISM2, CNRS UMR 7313, Equipe Chirosciences, Aix-Marseille Université, 13397 Cedex 20, Marseille, France
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Mondal S, Nechab M, Vanthuyne N, Bertrand MP. One-pot Crabbé homologation-radical cascade cyclisation with memory of chirality. Chem Commun (Camb) 2012; 48:2549-51. [DOI: 10.1039/c2cc17830c] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Duplessis M, Waltz ME, Bencheqroun M, Cardinal-David B, Guindon Y. Stereoselective Quaternary Center Construction via Atom-Transfer Radical Cyclization Using Silicon Tethers on Acyclic Precursors. Org Lett 2009; 11:3148-51. [DOI: 10.1021/ol901126y] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Martin Duplessis
- Institut de recherches cliniques de Montréal (IRCM), Bio-organic Chemistry Laboratory, 110 avenue des Pins Ouest, Montréal, Québec, Canada H2W 1R7, Department of Chemistry, Université de Montréal, C.P. 6128, succursale Centre-Ville, Montréal, Québec, Canada H3C 3J7, and Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, Québec, Canada H3A 2K6
| | - Marie-Eve Waltz
- Institut de recherches cliniques de Montréal (IRCM), Bio-organic Chemistry Laboratory, 110 avenue des Pins Ouest, Montréal, Québec, Canada H2W 1R7, Department of Chemistry, Université de Montréal, C.P. 6128, succursale Centre-Ville, Montréal, Québec, Canada H3C 3J7, and Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, Québec, Canada H3A 2K6
| | - Mohammed Bencheqroun
- Institut de recherches cliniques de Montréal (IRCM), Bio-organic Chemistry Laboratory, 110 avenue des Pins Ouest, Montréal, Québec, Canada H2W 1R7, Department of Chemistry, Université de Montréal, C.P. 6128, succursale Centre-Ville, Montréal, Québec, Canada H3C 3J7, and Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, Québec, Canada H3A 2K6
| | - Benoit Cardinal-David
- Institut de recherches cliniques de Montréal (IRCM), Bio-organic Chemistry Laboratory, 110 avenue des Pins Ouest, Montréal, Québec, Canada H2W 1R7, Department of Chemistry, Université de Montréal, C.P. 6128, succursale Centre-Ville, Montréal, Québec, Canada H3C 3J7, and Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, Québec, Canada H3A 2K6
| | - Yvan Guindon
- Institut de recherches cliniques de Montréal (IRCM), Bio-organic Chemistry Laboratory, 110 avenue des Pins Ouest, Montréal, Québec, Canada H2W 1R7, Department of Chemistry, Université de Montréal, C.P. 6128, succursale Centre-Ville, Montréal, Québec, Canada H3C 3J7, and Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montréal, Québec, Canada H3A 2K6
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