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Eriksson J, Antoni G, Långström B, Itsenko O. The development of 11C-carbonylation chemistry: A systematic view. Nucl Med Biol 2021; 92:115-137. [PMID: 32147168 DOI: 10.1016/j.nucmedbio.2020.02.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 02/16/2020] [Indexed: 12/18/2022]
Abstract
The prospects for using carbon-11 labelled compounds in molecular imaging has improved with the development of diverse synthesis methods, including 11C-carbonylations and refined techniques to handle [11C]carbon monoxide at a nanomole scale. Facilitating biological research and molecular imaging was the driving force when [11C]carbon monoxide was used in the first in vivo application with carbon-11 in human (1945) and when [11C]carbon monoxide was used for the first time as a chemical reagent in the synthesis of [11C]phosgene (1978). This review examines a rich plethora of labelled compounds synthesized from [11C]carbon monoxide, their chemistry and use in molecular imaging. While the strong development of the 11C-carbonylation chemistry has expanded the carbon-11 domain considerably, it could be argued that the number of 11C-carbonyl compounds entering biological investigations should be higher. The reason for this may partly be the lack of commercially available synthesis instruments designed for 11C-carbonylations. But as this review shows, novel and greatly simplified methods to handle [11C]carbon monoxide have been developed. The next important challenge is to make full use of these technologies and synthesis methods in PET research. When there is a PET-tracer that meets a more general need, the incentive to implement 11C-carbonylation protocols will increase.
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Affiliation(s)
- Jonas Eriksson
- Department of Medicinal Chemistry, Division of Organic Pharmaceutical Chemistry, Uppsala University, Uppsala, Sweden.
| | - Gunnar Antoni
- Department of Medicinal Chemistry, Division of Organic Pharmaceutical Chemistry, Uppsala University, Uppsala, Sweden
| | - Bengt Långström
- Department of Chemistry, Uppsala University, Uppsala, Sweden
| | - Oleksiy Itsenko
- Department of Medical Physics and Biomedical Engineering, Sahlgrenska University Hospital, Gothenburg, Sweden
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Bautista-Aguilera ÓM, Budni J, Mina F, Medeiros EB, Deuther-Conrad W, Entrena JM, Moraleda I, Iriepa I, López-Muñoz F, Marco-Contelles J. Contilisant, a Tetratarget Small Molecule for Alzheimer's Disease Therapy Combining Cholinesterase, Monoamine Oxidase Inhibition, and H3R Antagonism with S1R Agonism Profile. J Med Chem 2018; 61:6937-6943. [PMID: 29969030 DOI: 10.1021/acs.jmedchem.8b00848] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Contilisant, a permeable, antioxidant, and neuroprotectant agent, showing high nM affinity at H3R and excellent inhibition of the monoamine oxidases and cholinesterases, is an affine and selective S1R agonist in the nanomolar range, based on the binding affinity and functional experiment, a result confirmed by molecular modeling. In addition, contilisant significantly restores the cognitive deficit induced by Aβ1-42 in the radial maze assay in an in vivo Alzheimer's disease test, comparing very favorably with donepezil.
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Affiliation(s)
| | - Josiane Budni
- Laboratório de Neurologia Experimental , Universidade do Extremo Sul Catarinense , Av. Universitária , 1105 Criciúma , Brazil
| | - Francielle Mina
- Laboratório de Neurologia Experimental , Universidade do Extremo Sul Catarinense , Av. Universitária , 1105 Criciúma , Brazil
| | - Eduarda Behenck Medeiros
- Laboratório de Neurologia Experimental , Universidade do Extremo Sul Catarinense , Av. Universitária , 1105 Criciúma , Brazil
| | - Winnie Deuther-Conrad
- Department of Neuroradiopharmaceuticals, Institute of Radiopharmaceutical Cancer Research , Helmholtz-Zentrum Dresden-Rossendorf , 04318 Leipzig , Germany
| | - José M Entrena
- Animal Behavior Research Unit, Scientific Instrumentation Center , University of Granada , Parque Tecnológico de Ciencias de la Salud , 18100 Armilla , Granada , Spain
| | - Ignacio Moraleda
- Departamento de Química Orgánica and Química Inorgánica , Universidad de Alcalá , Ctra. Madrid-Barcelona, Km. 33,6 , 28871 Madrid , Spain
| | - Isabel Iriepa
- Departamento de Química Orgánica and Química Inorgánica , Universidad de Alcalá , Ctra. Madrid-Barcelona, Km. 33,6 , 28871 Madrid , Spain
| | - Francisco López-Muñoz
- Faculty of Health , Camilo José Cela University , 28692 Villanueva de la Cañada, Madrid , Spain
- Neuropsychopharmacology Unit , "Hospital 12 de Octubre" Research Institute , 28041 Madrid , Spain
| | - José Marco-Contelles
- Laboratory of Medicinal Chemistry, IQOG, CSIC , C/Juan de la Cierva 3 , 28006 Madrid , Spain
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Synthesis of 11C-Labelled Ureas by Palladium(II)-Mediated Oxidative Carbonylation. Molecules 2017; 22:molecules22101688. [PMID: 28994734 PMCID: PMC6151465 DOI: 10.3390/molecules22101688] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 10/04/2017] [Accepted: 10/04/2017] [Indexed: 01/12/2023] Open
Abstract
Positron emission tomography is an imaging technique with applications in clinical settings as well as in basic research for the study of biological processes. A PET tracer, a biologically active molecule where a positron-emitting radioisotope such as carbon-11 has been incorporated, is used for the studies. Development of robust methods for incorporation of the radioisotope is therefore of the utmost importance. The urea functional group is present in many biologically active compounds and is thus an attractive target for incorporation of carbon-11 in the form of [11C]carbon monoxide. Starting with amines and [11C]carbon monoxide, both symmetrical and unsymmetrical 11C-labelled ureas were synthesised via a palladium(II)-mediated oxidative carbonylation and obtained in decay-corrected radiochemical yields up to 65%. The added advantage of using [11C]carbon monoxide was shown by the molar activity obtained for an inhibitor of soluble epoxide hydrolase (247 GBq/μmol–319 GBq/μmol). DFT calculations were found to support a reaction mechanism proceeding through an 11C-labelled isocyanate intermediate.
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