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Stackpole BJ, Fredericksen JM, Brasch NE. Exploring the potential of the vitamin B 12 derivative azidocobalamin to undergo Huisgen 1,3-dipolar azide-alkyne cycloaddition reactions. J Inorg Biochem 2024; 254:112504. [PMID: 38412777 DOI: 10.1016/j.jinorgbio.2024.112504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/08/2024] [Accepted: 02/09/2024] [Indexed: 02/29/2024]
Abstract
There is considerable interest in using the metalloprotein cofactor vitamin B12 as a vehicle to deliver drugs and diagnostic agents into mammalian or bacterial cells by exploiting the B12-specific active uptake pathways. Conjugation of the cargo via the β-axial site or the 5'-OH of the ribose of the nucleotide are the most desirable sites, to maximise intracellular uptake. Herein we show the potential of conjugation at the beta-azido ligand of the vitamin B12 derivative azidocobalamin via a click-type azide-alkyne 1,3-dipolar cycloaddition (Huisgen cycloaddition) reaction. Reacting azidocobalamin with dimethyl acetylenedicarboxylate at 40 °C results in essentially stoichiometric conversion of azidocobalamin to the corresponding triazolato complex. The stability of the complex as a function of pH and in the presence of cyanide were investigated. The complex is stable in pD 7.0 phosphate buffer for 24 h. The rate of beta-axial ligand substitution was found to be one order of magnitude slower for the triazolatocobalamin complex compared with azidocobalamin.
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Affiliation(s)
- Ben J Stackpole
- School of Science, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand; The Dodd-Walls Centre for Quantum and Photonic Technologies, Dunedin 9054, New Zealand; The Maurice Wilkins Centre for Molecular Biodiscovery, Private Bag 92019, Auckland 1142, New Zealand
| | - Jessica M Fredericksen
- School of Science, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand; The Dodd-Walls Centre for Quantum and Photonic Technologies, Dunedin 9054, New Zealand; The Maurice Wilkins Centre for Molecular Biodiscovery, Private Bag 92019, Auckland 1142, New Zealand
| | - Nicola E Brasch
- School of Science, Auckland University of Technology, Private Bag 92006, Auckland 1142, New Zealand; The Dodd-Walls Centre for Quantum and Photonic Technologies, Dunedin 9054, New Zealand; The Maurice Wilkins Centre for Molecular Biodiscovery, Private Bag 92019, Auckland 1142, New Zealand.
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2
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Chen YX, Yang HH, Lin YL, Hou JK, Chu YJ, Liu FC, Lee GH. [3 + 2] cycloaddition of azido-bridged molybdenum(ii) complex with nitriles and alkynes. Dalton Trans 2019; 48:12996-13005. [PMID: 31397830 DOI: 10.1039/c9dt02659b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The azido-bridged molybdenum complex [N(CH3)4][(μ1,1-N3)3{Mo(η3-C3H5)(CO)2}2], 1, was synthesized and its reactions with unsaturated nitriles and alkynes were investigated. The isolated [3 + 2] cycloaddition products were the N(2), N(3) bound tetrazolate complexes [N(CH3)4][(μ1,1-N3)2(μ-N4C{R}-κ2N2:N3){Mo(η3-C3H5)(CO)2}2] (R = C(CN)C(CN)2 (2), C6H4NO2, (3)) and [N(CH3)4][(μ-N4C{R}-κ2N2:N3)2(μ1,1-N3){Mo(η3-C3H5)(CO)2}2] (R = C(CN)C(CN)2 (4), C6H4NO2 (5)), and the N(1), N(2) bound triazolate complexes [N(CH3)4][(μ-N3C2{R}2-κ2N1:N2)(μ1,1-N3)2{Mo(η3-C3H5)(CO)2}2] (R = CO2CH3 (6) and R = CO2CH2CH3 (7). The reactivity of these cycloaddition reactions could be determined by the electronic properties of both metal azide and dipolarophile. In the reaction of 1 with nitriles, at most two bridging azido groups can participate in the cycloaddition reactions and elevated temperature is required for the preparations of 3 and 5. In the case of alkynes, only one azido group is active for the reaction. These complexes are fluxional in solution, and isomers were found in 3 and 5. The molecular structures of the above complexes were determined by single-crystal X-ray diffraction analysis, which reveals a distorted octahedral geometry around each molybdenum atom, and the two metal atoms are connected through three bridging ligands. The formation of these heterocycles demonstrated the [3 + 2] cycloaddition reaction could also be applied to the less electron-rich azido-bridged molybdenum complex.
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Affiliation(s)
- You-Xuan Chen
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China.
| | - Hsueh-Hui Yang
- Department of Medical Research, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Foundation, Hualien, 970, Taiwan, Republic of China
| | - Yu-Liang Lin
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China.
| | - Ji-Kuan Hou
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China.
| | - Yong-Jui Chu
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China.
| | - Fu-Chen Liu
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China.
| | - Gene-Hsiang Lee
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan, Republic of China
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Sánchez-Sordo I, Díez J, Lastra E, Gamasa MP. Synthesis of Iridium Tetrazolato, Triazolinato, and Triazolato Complexes by [3+2] Cycloaddition of Iridium(III) Azido Complexes with Unsaturated Nitriles. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Irene Sánchez-Sordo
- Departamento de Química Orgánica e Inorgánica-IUQOEM (Unidad Asociada al CSIC), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo, 33006 Oviedo, Principado de Asturias, Spain
| | - Josefina Díez
- Departamento de Química Orgánica e Inorgánica-IUQOEM (Unidad Asociada al CSIC), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo, 33006 Oviedo, Principado de Asturias, Spain
| | - Elena Lastra
- Departamento de Química Orgánica e Inorgánica-IUQOEM (Unidad Asociada al CSIC), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo, 33006 Oviedo, Principado de Asturias, Spain
| | - M. Pilar Gamasa
- Departamento de Química Orgánica e Inorgánica-IUQOEM (Unidad Asociada al CSIC), Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Oviedo, 33006 Oviedo, Principado de Asturias, Spain
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Kumar R, Kishan R, Thomas JM, Chinnappan S, Thirupathi N. Probing the factors that influence the conformation of a guanidinato ligand in [(η5-C5Me5)M(NN)X] (NN = chelating N,N′,N′′-tri(o-substituted aryl)guanidinate(1−); X = chloro, azido and triazolato). NEW J CHEM 2018. [DOI: 10.1039/c7nj03766j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The conformational difference illustrated is ascribed to a subtle repulsive interaction between the o-Cl substituent of two proximal aryl rings in the guanidinate ligand.
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Affiliation(s)
- Robin Kumar
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
| | - Ram Kishan
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
| | - Jisha Mary Thomas
- Catalysis and Energy Laboratory
- Department of Chemistry
- Pondicherry University (A Central University)
- Puducherry 605014
- India
| | - Sivasankar Chinnappan
- Catalysis and Energy Laboratory
- Department of Chemistry
- Pondicherry University (A Central University)
- Puducherry 605014
- India
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Quadri CC, Lalrempuia R, Hessevik J, Törnroos KW, Le Roux E. Structural Characterization of Tridentate N-Heterocyclic Carbene Titanium(IV) Benzyloxide, Silyloxide, Acetate, and Azide Complexes and Assessment of Their Efficacies for Catalyzing the Copolymerization of Cyclohexene Oxide with CO2. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00705] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Coralie C. Quadri
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007, Bergen, Norway
| | - Ralte Lalrempuia
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007, Bergen, Norway
| | - Julie Hessevik
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007, Bergen, Norway
| | - Karl W. Törnroos
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007, Bergen, Norway
| | - Erwan Le Roux
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007, Bergen, Norway
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Zhang Y, Tong P, Yang D, Li J, Wang B, Qu J. Migratory insertion and hydrogenation of a bridging azide in a thiolate-bridged dicobalt reaction platform. Chem Commun (Camb) 2017; 53:9854-9857. [PMID: 28825085 DOI: 10.1039/c7cc05092e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A novel well-defined thiolate-bridged dicobalt azido complex is converted to a rare sulfilimide-bridged dicobalt complex via nitrogen atom migratory insertion into the Co-S bond upon thermolysis. Intriguingly, the homolytic cleavage of hydrogen is achieved by this azide under mild conditions to furnish a partially hydrogenated azido complex.
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Affiliation(s)
- Yixin Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 2 Linggong Road, Dalian 116024, P. R. China.
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de Salinas SM, Díez J, Gamasa MP, Lastra E. 1,3-Dipolar Cycloadditions of Rhodium(III) Azido Complexes with Alkynes and Nitriles. ChemistrySelect 2017. [DOI: 10.1002/slct.201700673] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sara Martínez de Salinas
- Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; Julian Claveria, 8. 33006 OVIEDO SPAIN
| | - Josefina Díez
- Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; Julian Claveria, 8. 33006 OVIEDO SPAIN
| | - M. Pilar Gamasa
- Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; Julian Claveria, 8. 33006 OVIEDO SPAIN
| | - Elena Lastra
- Departamento de Química Orgánica e Inorgánica; Universidad de Oviedo; Julian Claveria, 8. 33006 OVIEDO SPAIN
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Iridium(III) and Rhodium(III) compounds of dipyridyl-N-alkylimine and dipyridyl-NH-ketimine: Spectral characterization and crystal structure. J CHEM SCI 2017. [DOI: 10.1007/s12039-017-1233-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Dwivedi AD, Binnani C, Tyagi D, Rawat KS, Li PZ, Zhao Y, Mobin SM, Pathak B, Singh SK. Troponate/Aminotroponate Ruthenium–Arene Complexes: Synthesis, Structure, and Ligand-Tuned Mechanistic Pathway for Direct C–H Bond Arylation with Aryl Chlorides in Water. Inorg Chem 2016; 55:6739-49. [DOI: 10.1021/acs.inorgchem.6b01028] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
| | | | | | | | - Pei-Zhou Li
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
| | - Yanli Zhao
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
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Fehlhammer WP, Beck W. Azide Chemistry - An Inorganic Perspective, Part II[‡][3+2]-Cycloaddition Reactions of Metal Azides and Related Systems. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201500165] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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