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Liao WC, Ong TC, Gajan D, Bernada F, Sauvée C, Yulikov M, Pucino M, Schowner R, Schwarzwälder M, Buchmeiser MR, Jeschke G, Tordo P, Ouari O, Lesage A, Emsley L, Copéret C. Dendritic polarizing agents for DNP SENS. Chem Sci 2017; 8:416-422. [PMID: 28451187 PMCID: PMC5365053 DOI: 10.1039/c6sc03139k] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 08/19/2016] [Indexed: 01/22/2023] Open
Abstract
Dendrimer-shielded polarizing agents for the application of DNP SENS to reactive surfaces.
Dynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy (DNP SENS) is an effective method to significantly improve solid-state NMR investigation of solid surfaces. The presence of unpaired electrons (polarizing agents) is crucial for DNP, but it has drawbacks such as leading to faster nuclear spin relaxation, or even reaction with the substrate under investigation. The latter can be a particular problem for heterogeneous catalysts. Here, we present a series of carbosilane-based dendritic polarizing agents, in which the bulky dendrimer can reduce the interaction between the solid surface and the free radical. We thereby preserve long nuclear T′2 of the surface species, and even successfully enhance a reactive heterogeneous metathesis catalyst.
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Affiliation(s)
- Wei-Chih Liao
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland .
| | - Ta-Chung Ong
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland .
| | - David Gajan
- Centre de RMN à Très Hauts Champs , Institut de Sciences Analytiques (CNRS/ENS Lyon/UCB Lyon 1) , Université de Lyon , 69100 Villeurbanne , France
| | - Florian Bernada
- Aix-Marseille Univ , CNRS , ICR UMR 7273 , Marseille , 13013 , France
| | - Claire Sauvée
- Aix-Marseille Univ , CNRS , ICR UMR 7273 , Marseille , 13013 , France
| | - Maxim Yulikov
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland .
| | - Margherita Pucino
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland .
| | - Roman Schowner
- Institut für Polymerchemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 Stuttgart , Germany
| | - Martin Schwarzwälder
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland .
| | - Michael R Buchmeiser
- Institut für Polymerchemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 Stuttgart , Germany
| | - Gunnar Jeschke
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland .
| | - Paul Tordo
- Aix-Marseille Univ , CNRS , ICR UMR 7273 , Marseille , 13013 , France
| | - Olivier Ouari
- Aix-Marseille Univ , CNRS , ICR UMR 7273 , Marseille , 13013 , France
| | - Anne Lesage
- Centre de RMN à Très Hauts Champs , Institut de Sciences Analytiques (CNRS/ENS Lyon/UCB Lyon 1) , Université de Lyon , 69100 Villeurbanne , France
| | - Lyndon Emsley
- Institut des Sciences et Ingénierie Chimiques , Ecole Polytechnique Fédérale de Lausanne (EPFL) , 1015 Lausanne , Switzerland
| | - Christophe Copéret
- Department of Chemistry and Applied Biosciences , ETH Zürich , Vladimir-Prelog-Weg 1-5 , 8093 Zürich , Switzerland .
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Martínez‐Olid F, Andrés R, Flores JC, Gómez‐Sal P. Trimetallic PEPPSI‐Type Palladium N‐Heterocyclic Carbene Complexes – Improved Catalyst Lifetime in the Mizoroki–Heck Coupling Reaction. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500542] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Francisco Martínez‐Olid
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - Román Andrés
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - Juan C. Flores
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
| | - Pilar Gómez‐Sal
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Madrid, Spain
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5
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Fuentes-Paniagua E, Peña-González CE, Galán M, Gómez R, de la Mata FJ, Sánchez-Nieves J. Thiol-Ene Synthesis of Cationic Carbosilane Dendrons: a New Family of Synthons. Organometallics 2013. [DOI: 10.1021/om301217g] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Elena Fuentes-Paniagua
- Departamento de Quı́mica Orgánica
y Quı́mica
Inorgánica and ‡Networking Research Center for Bioengineering,
Biomaterials and Nanomedicine (CIBER-BBN), Universidad de Alcalá, Campus Universitario,
E-28871 Alcalá de Henares (Madrid), Spain
| | - Cornelia E. Peña-González
- Departamento de Quı́mica Orgánica
y Quı́mica
Inorgánica and ‡Networking Research Center for Bioengineering,
Biomaterials and Nanomedicine (CIBER-BBN), Universidad de Alcalá, Campus Universitario,
E-28871 Alcalá de Henares (Madrid), Spain
| | - Marta Galán
- Departamento de Quı́mica Orgánica
y Quı́mica
Inorgánica and ‡Networking Research Center for Bioengineering,
Biomaterials and Nanomedicine (CIBER-BBN), Universidad de Alcalá, Campus Universitario,
E-28871 Alcalá de Henares (Madrid), Spain
| | - Rafael Gómez
- Departamento de Quı́mica Orgánica
y Quı́mica
Inorgánica and ‡Networking Research Center for Bioengineering,
Biomaterials and Nanomedicine (CIBER-BBN), Universidad de Alcalá, Campus Universitario,
E-28871 Alcalá de Henares (Madrid), Spain
| | - F. Javier de la Mata
- Departamento de Quı́mica Orgánica
y Quı́mica
Inorgánica and ‡Networking Research Center for Bioengineering,
Biomaterials and Nanomedicine (CIBER-BBN), Universidad de Alcalá, Campus Universitario,
E-28871 Alcalá de Henares (Madrid), Spain
| | - Javier Sánchez-Nieves
- Departamento de Quı́mica Orgánica
y Quı́mica
Inorgánica and ‡Networking Research Center for Bioengineering,
Biomaterials and Nanomedicine (CIBER-BBN), Universidad de Alcalá, Campus Universitario,
E-28871 Alcalá de Henares (Madrid), Spain
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Abstract
paecilodepsipeptide A was first synthesized by retrosynthesis methods. the structures were determined by Mass Spectrometry and NMR spectroscopy, and the anti-tumor activities on human hepatocellular carcinoma cell line (SMMC-7721) and human lymphoma cell line (Raji) were examined by MTT. The result showed that the rate of Paecilodepsipeptide A was 72% by retrosynthesis methods. The structures of the synthesized product were identified by 1H NMR and 13C NMR spectra, which is identical to the natural product. The product has remarkable anti-proliferation activity on SMMC-7721 and Raji, which showed good anti-tumor activity. IC50 was 8.97 μmol/L and 11.13 μmol/L respectively, The total synthesis of Paecilodepsipeptide A is significant to further study its derivatives and develop novel antitumor drugs.
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Sánchez-Nieves J, Ortega P, Muñoz-Fernández MÁ, Gómez R, de la Mata FJ. Synthesis of carbosilane dendrons and dendrimers derived from 1,3,5-trihydroxybenzene. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.09.063] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Galán H, Murillo MT, Quesada R, Escudero-Adán EC, Benet-Buchholz J, Prados P, de Mendoza J. A calixarene dendron with surface congestion at the first generation. Chem Commun (Camb) 2010; 46:1044-6. [DOI: 10.1039/b921465h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gingras M, Placide V, Raimundo JM, Bergamini G, Ceroni P, Balzani V. Polysulfurated Pyrene-Cored Dendrimers: Luminescent and Electrochromic Properties. Chemistry 2008; 14:10357-63. [DOI: 10.1002/chem.200801198] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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Ronconi C, Stoddart J, Balzani V, Baroncini M, Ceroni P, Giansante C, Venturi M. Polyviologen Dendrimers as Hosts and Charge-Storing Devices. Chemistry 2008; 14:8365-73. [DOI: 10.1002/chem.200800773] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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