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Allison SJ, Ashton GP, Lynch HJ, Shire BR, Phillips RM, Parkes GMB, Pinder E, Rice CR, Teixeira AAM, Volleman T, Wordsworth DA. Preclinical Evaluation of Zn(II) Self-Assemblies with Selective Cytotoxic Activity Against Cancer Cells In Vitro and In Ovo. Chemistry 2024; 30:e202302803. [PMID: 37874745 PMCID: PMC10952438 DOI: 10.1002/chem.202302803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 10/26/2023]
Abstract
Dipodal pyridylthiazole amine ligands L1 and L2 both form different metallo-supramolecular self-assemblies with Zn2+ and Cu2+ and these are shown to be toxic and selective towards cancer cell lines in vitro. Furthermore, potency and selectivity are highly dependent upon the metal ions, ligand system and bound anion, with significant changes in chemosensitivity and selectivity dependent upon which species are employed. Importantly, significant anti-tumor activity was observed in ovo at doses that are non-toxic.
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Affiliation(s)
- Simon J. Allison
- School of Applied SciencesUniversity of HuddersfieldHD1 3DHHuddersfieldUK
| | - Gage P. Ashton
- School of Applied SciencesUniversity of HuddersfieldHD1 3DHHuddersfieldUK
| | - Hannah J. Lynch
- School of Applied SciencesUniversity of HuddersfieldHD1 3DHHuddersfieldUK
| | - Bethany R. Shire
- School of Applied SciencesUniversity of HuddersfieldHD1 3DHHuddersfieldUK
| | - Roger M. Phillips
- School of Applied SciencesUniversity of HuddersfieldHD1 3DHHuddersfieldUK
| | | | - Emma Pinder
- School of Applied SciencesUniversity of HuddersfieldHD1 3DHHuddersfieldUK
| | - Craig R. Rice
- School of Applied SciencesUniversity of HuddersfieldHD1 3DHHuddersfieldUK
| | - Ana A. M. Teixeira
- School of Applied SciencesUniversity of HuddersfieldHD1 3DHHuddersfieldUK
| | - Tibo Volleman
- Axion BioSystemsVrijstraat 9B5611 ATEindhovenThe Netherlands
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Frank N, Nugent J, Shire BR, Pickford HD, Rabe P, Sterling AJ, Zarganes-Tzitzikas T, Grimes T, Thompson AL, Smith RC, Schofield CJ, Brennan PE, Duarte F, Anderson EA. Synthesis of meta-substituted arene bioisosteres from [3.1.1]propellane. Nature 2022; 611:721-726. [PMID: 36108675 DOI: 10.1038/s41586-022-05290-z] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 08/30/2022] [Indexed: 11/08/2022]
Abstract
Small-ring cage hydrocarbons are popular bioisosteres (molecular replacements) for commonly found para-substituted benzene rings in drug design1. The utility of these cage structures derives from their superior pharmacokinetic properties compared with their parent aromatics, including improved solubility and reduced susceptibility to metabolism2,3. A prime example is the bicyclo[1.1.1]pentane motif, which is mainly synthesized by ring-opening of the interbridgehead bond of the strained hydrocarbon [1.1.1]propellane with radicals or anions4. By contrast, scaffolds mimicking meta-substituted arenes are lacking because of the challenge of synthesizing saturated isosteres that accurately reproduce substituent vectors5. Here we show that bicyclo[3.1.1]heptanes (BCHeps), which are hydrocarbons for which the bridgehead substituents map precisely onto the geometry of meta-substituted benzenes, can be conveniently accessed from [3.1.1]propellane. We found that [3.1.1]propellane can be synthesized on a multigram scale, and readily undergoes a range of radical-based transformations to generate medicinally relevant carbon- and heteroatom-substituted BCHeps, including pharmaceutical analogues. Comparison of the absorption, distribution, metabolism and excretion (ADME) properties of these analogues reveals enhanced metabolic stability relative to their parent arene-containing drugs, validating the potential of this meta-arene analogue as an sp3-rich motif in drug design. Collectively, our results show that BCHeps can be prepared on useful scales using a variety of methods, offering a new surrogate for meta-substituted benzene rings for implementation in drug discovery programmes.
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Affiliation(s)
- Nils Frank
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, UK
| | - Jeremy Nugent
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, UK
| | - Bethany R Shire
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, UK
| | - Helena D Pickford
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, UK
| | - Patrick Rabe
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, UK
| | - Alistair J Sterling
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, UK
| | - Tryfon Zarganes-Tzitzikas
- Alzheimer's Research UK Oxford Drug Discovery Institute, Centre for Medicines Discovery, Nuffield Department of Medicine, Oxford, UK
| | - Thomas Grimes
- Alzheimer's Research UK Oxford Drug Discovery Institute, Centre for Medicines Discovery, Nuffield Department of Medicine, Oxford, UK
| | - Amber L Thompson
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, UK
| | - Russell C Smith
- Abbvie Drug Discovery Science & Technology (DDST), North Chicago, IL, USA
| | | | - Paul E Brennan
- Alzheimer's Research UK Oxford Drug Discovery Institute, Centre for Medicines Discovery, Nuffield Department of Medicine, Oxford, UK
| | - Fernanda Duarte
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, UK
| | - Edward A Anderson
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Oxford, UK.
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Nugent J, Shire BR, Caputo DFJ, Pickford HD, Nightingale F, Houlsby ITT, Mousseau JJ, Anderson EA. Synthesis of All-Carbon Disubstituted Bicyclo[1.1.1]pentanes by Iron-Catalyzed Kumada Cross-Coupling. Angew Chem Int Ed Engl 2020; 59:11866-11870. [PMID: 32346946 PMCID: PMC7383991 DOI: 10.1002/anie.202004090] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Indexed: 12/14/2022]
Abstract
1,3-Disubstituted bicyclo[1.1.1]pentanes (BCPs) are important motifs in drug design as surrogates for p-substituted arenes and alkynes. Access to all-carbon disubstituted BCPs via cross-coupling has to date been limited to use of the BCP as the organometallic component, which restricts scope due to the harsh conditions typically required for the synthesis of metallated BCPs. Here we report a general method to access 1,3-C-disubstituted BCPs from 1-iodo-bicyclo[1.1.1]pentanes (iodo-BCPs) by direct iron-catalyzed cross-coupling with aryl and heteroaryl Grignard reagents. This chemistry represents the first general use of iodo-BCPs as electrophiles in cross-coupling, and the first Kumada coupling of tertiary iodides. Benefiting from short reaction times, mild conditions, and broad scope of the coupling partners, it enables the synthesis of a wide range of 1,3-C-disubstituted BCPs including various drug analogues.
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Affiliation(s)
- Jeremy Nugent
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Bethany R. Shire
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Dimitri F. J. Caputo
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Helena D. Pickford
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Frank Nightingale
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Ian T. T. Houlsby
- Syngenta Ltd.Jealott's Hill International Research CentreBracknellRG42 6EYUK
| | | | - Edward A. Anderson
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
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Nugent J, Shire BR, Caputo DFJ, Pickford HD, Nightingale F, Houlsby ITT, Mousseau JJ, Anderson EA. Synthesis of All‐Carbon Disubstituted Bicyclo[1.1.1]pentanes by Iron‐Catalyzed Kumada Cross‐Coupling. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004090] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jeremy Nugent
- Chemistry Research Laboratory University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Bethany R. Shire
- Chemistry Research Laboratory University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Dimitri F. J. Caputo
- Chemistry Research Laboratory University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Helena D. Pickford
- Chemistry Research Laboratory University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Frank Nightingale
- Chemistry Research Laboratory University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Ian T. T. Houlsby
- Syngenta Ltd. Jealott's Hill International Research Centre Bracknell RG42 6EY UK
| | | | - Edward A. Anderson
- Chemistry Research Laboratory University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
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Moloney MG, Bagum H, Shire BR, Christensen KE, Genov M, Pretsch A, Pretsch D. Bicyclic Lactams Derived from Serine or Cysteine and 2-Methylpropanal. Synlett 2020. [DOI: 10.1055/s-0039-1691569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Bicyclic lactams may be prepared from serine or cysteine and 2-methylpropanal; the resulting S,N-heterocycles are more stable than the corresponding O,N-heterocycles but both are synthetic intermediates capable of further elaboration.
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Affiliation(s)
- Mark G. Moloney
- The Department of Chemistry, Chemistry Research Laboratory, University of Oxford
- Oxford Suzhou Centre for Advanced Research
| | - Halima Bagum
- The Department of Chemistry, Chemistry Research Laboratory, University of Oxford
| | - Bethany R. Shire
- The Department of Chemistry, Chemistry Research Laboratory, University of Oxford
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6
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Nugent J, Arroniz C, Shire BR, Sterling AJ, Pickford HD, Wong MLJ, Mansfield SJ, Caputo DFJ, Owen B, Mousseau JJ, Duarte F, Anderson EA. A General Route to Bicyclo[1.1.1]pentanes through Photoredox Catalysis. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03190] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jeremy Nugent
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Carlos Arroniz
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Bethany R. Shire
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Alistair J. Sterling
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Helena D. Pickford
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Marie L. J. Wong
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Steven J. Mansfield
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Dimitri F. J. Caputo
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Benjamin Owen
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - James J. Mousseau
- Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Fernanda Duarte
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Edward A. Anderson
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom
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