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Ferhati X, Salas-Cubero M, Garrido P, García-Sanmartín J, Guerreiro A, Avenoza A, Busto JH, Peregrina JM, Martínez A, Jiménez-Moreno E, Bernardes GJL, Corzana F. Bioorthogonal Self-Immolative Linker Based on Grob Fragmentation. Org Lett 2021; 23:8580-8584. [PMID: 34694118 PMCID: PMC8576835 DOI: 10.1021/acs.orglett.1c03299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
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A self-immolative
bioorthogonal conditionally cleavable linker
based on Grob fragmentation is described. It is derived from 1,3-aminocyclohexanols
and allows the release of sulfonate-containing compounds in aqueous
media. Modulation of the amine pKa promotes
fragmentation even at slightly acidic pH, a common feature of several
tumor environments. The Grob fragmentation can also occur under physiological
conditions in living cells, highlighting the potential bioorthogonal
applicability of this reaction.
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Affiliation(s)
- Xhenti Ferhati
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
| | - Marina Salas-Cubero
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
| | - Pablo Garrido
- Angiogenesis Group, Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), 26006 Logroño, Spain
| | - Josune García-Sanmartín
- Angiogenesis Group, Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), 26006 Logroño, Spain
| | - Ana Guerreiro
- Instituto de Medicina Molecular Joao Lobo Antunes, Faculdade de Medicina de Universidad de Lisboa, 1649-028 Lisboa, Portugal
| | - Alberto Avenoza
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
| | - Jesús H Busto
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
| | - Jesús M Peregrina
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
| | - Alfredo Martínez
- Angiogenesis Group, Oncology Area, Center for Biomedical Research of La Rioja (CIBIR), 26006 Logroño, Spain
| | - Ester Jiménez-Moreno
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
| | - Gonçalo J L Bernardes
- Instituto de Medicina Molecular Joao Lobo Antunes, Faculdade de Medicina de Universidad de Lisboa, 1649-028 Lisboa, Portugal.,Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Francisco Corzana
- Departamento de Química, Centro de Investigación en Síntesis Química, Universidad de La Rioja, 26006 Logroño, La Rioja, Spain
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Kevill DN, Kim CB, D'Souza MJ. Correlation of the rates of solvolysis of α-bromoisobutyrophenone using both simple and extended forms of the Grunwald-Winstein equation and the application of correlation analysis to related studies. EUROPEAN JOURNAL OF CHEMISTRY (PRINT) 2018; 9:1-6. [PMID: 29682397 PMCID: PMC5909717 DOI: 10.5155/eurjchem.9.1.1-6.1680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 01/26/2018] [Accepted: 01/26/2018] [Indexed: 06/08/2023]
Abstract
A Grunwald-Winstein treatment of the specific rates of solvolysis of α-bromoisobutyrophenone in 100% methanol and in several aqueous ethanol, methanol, acetone, 2,2,2-trifluoroethanol (TFE), and 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) mixtures gives a good logarithmic correlation against a linear combination of NT (solvent nucleophilicity) and YBr (solvent ionizing power) values. The l and m sensitivity values are compared to those previously reported for α-bromoacetophenone and to those obtained from parallel treatments of literature specific rate values for the solvolyses of several tertiary mesylates containing a C(=O)R group attached at the α-carbon. Kinetic data obtained earlier by Pasto and Sevenair for the solvolyses of the same substrate in 75% aqueous ethanol (by weight) in the presence of silver perchlorate and perchloric acid are analyzed using multiple regression analysis.
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Affiliation(s)
- Dennis Neil Kevill
- Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115-2862, USA
| | - Chang-Bae Kim
- Department of Chemistry, Dan-Kook University, Hannam-dong, Yongsan-gu, Seoul 140-714, Korea
| | - Malcolm John D'Souza
- Department of Chemistry, Wesley College, 120 North State Street, Dover, Delaware 19901-3875, USA
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