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Anders L, Lindel T. Azido and desamino analogs of the marine natural product oroidin. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2023. [DOI: 10.1515/znb-2023-0305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Abstract
As part of our program on the synthesis and reactivity of the pyrrole-imidazole alkaloids from marine sponges, the synthesis of the 2-azido analog of the key marine natural product oroidin is reported. In addition, desaminooroidin and its alkyne analog were synthesized. Red-Al reduction of a 4-alkynylimidazole intermediate afforded the (E)-alkene, without having to pass via the (Z)-alkene. Coupling of 4,5-dibromopyrrole-2-carboxylic acid with 2-azidoimidazolylprop-2-en-1-amine was best achieved by EDCI-mediated coupling, which was superior to using the corresponding trichloromethylketone. Use of t-BuOK in acetonitrile can be recommended for the coupling of non-azidated alkenyl and alkynylimidazoles. The azido analog of oroidin underwent click cycloadditions to imidazolyltriazoles.
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Affiliation(s)
- Lisa Anders
- TU Braunschweig, Institute of Organic Chemistry , Hagenring 30, 38106 Braunschweig , Germany
| | - Thomas Lindel
- TU Braunschweig, Institute of Organic Chemistry , Hagenring 30, 38106 Braunschweig , Germany
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2
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Moderhack D. The Azalogues of Pyrrolotetrazole – An Overview. HETEROCYCLES 2023. [DOI: 10.3987/rev-22-988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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3
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Thio acid-mediated conversion of azides to amides – Investigation of 2-azidotetrahydobenzimidazoles and derivatives. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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4
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Abreu Diaz AM, Drumeva GO, Petrenyov DR, Carrier JF, DaSilva JN. Synthesis of the Novel AT 1 Receptor Tracer [ 18F]Fluoropyridine-Candesartan via Click Chemistry. ACS OMEGA 2020; 5:20353-20362. [PMID: 32832788 PMCID: PMC7439361 DOI: 10.1021/acsomega.0c02310] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 07/17/2020] [Indexed: 06/11/2023]
Abstract
A novel 7-((4-(3-((2-[18F]fluoropyridin-3-yl)oxy)propyl)-1H-1,2,3-triazol-1-yl)methyl)-1H-benzo[d]imidazole derivative of the angiotensin II type-1 receptor (AT1R) blocker candesartan, [18F]fluoropyridine-candesartan, was synthesized via the copper-catalyzed azide-alkyne cycloaddition click reaction between 2-[18F]fluoro-3-(pent-4-yn-1-yloxy)pyridine ([18F]FPyKYNE) and the tetrazole-protected azido-candesartan derivative, followed by acid deprotection. This three-step, two-pot, and two-step purification synthesis was done within 2 h. The use of tris[(1-hydroxypropyl-1H-1,2,3-triazol-4-yl)methyl]amine (THPTA) as a Cu(I) stabilizing agent increased the overall radiochemical yield by 4-fold (10 ± 2%, n = 13) compared to the reaction without THPTA (2.4 ± 0.2%, n = 3; decay-corrected from 18F produced at the end-of-beam). Complete separation of [18F]FPyKYNE from its nitro precursor and [18F]fluoropyridine-candesartan from the deprotected azido-candesartan allowed for high molar activities (>380 GBq/μmol) of the tracer. The use of 0.1% trifluoroacetic acid in water for reformulation and the addition of sodium ascorbate to the final formulation (1.6 ± 0.2 GBq/mL, n = 3) prevented tracer radiolysis with >97% radiochemical purity for a period of up to 10 h after the end-of-synthesis. A significant reduction in the uptake (86 ± 3%, n = 8) of the tracer was observed ex vivo in rats (at 20 min postinjection) in the AT1R-rich kidney cortex following pretreatment with saturating doses of the AT1R antagonist candesartan or losartan. This specific binding to AT1R was confirmed in vitro in the rat renal cortex (autoradiography) by a reduction of 26 ± 5% (n = 12) with losartan coincubation (10 μM). These favorable binding properties support further studies to assess the potential of [18F]fluoropyridine-candesartan as a tracer for the positron emission tomography imaging of renal AT1R.
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Affiliation(s)
- Aida M. Abreu Diaz
- Centre
de Recherche du CHUM, 900 rue Saint-Denis, Montréal, Québec H2X 0A9, Canada
- Département
de Pharmacologie et Physiologie, Faculté de Médecine, Université de Montréal, Pavillon Paul-G. Desmarais, 2960
chemin de la Tour, Montréal, Québec H3T 1J4, Canada
- Institut
de Génie Biomédicale, Faculté de Médecine, Université de Montréal, Pavillon Paul-G. Desmarais, 2960
chemin de la Tour, Montréal, Québec H3T 1J4, Canada
- Departamento
de Radioquímica, Instituto Superior de Tecnologías y
Ciencias Aplicadas, Universidad de la Habana, Ave. Salvador Allende y Luaces,
Quinta de los Molinos, La Habana 10400, Cuba
| | - Gergana O. Drumeva
- Centre
de Recherche du CHUM, 900 rue Saint-Denis, Montréal, Québec H2X 0A9, Canada
- Département
de Pharmacologie et Physiologie, Faculté de Médecine, Université de Montréal, Pavillon Paul-G. Desmarais, 2960
chemin de la Tour, Montréal, Québec H3T 1J4, Canada
| | - Daniil R. Petrenyov
- Centre
de Recherche du CHUM, 900 rue Saint-Denis, Montréal, Québec H2X 0A9, Canada
| | - Jean-François Carrier
- Centre
de Recherche du CHUM, 900 rue Saint-Denis, Montréal, Québec H2X 0A9, Canada
- Institut
de Génie Biomédicale, Faculté de Médecine, Université de Montréal, Pavillon Paul-G. Desmarais, 2960
chemin de la Tour, Montréal, Québec H3T 1J4, Canada
- Département
de Physique, Faculté des Arts et des Sciences, Université de Montréal, Complexe des Sciences, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, Québec H2V 0B3, Canada
- Département
de Radiologie, Radio-Oncologie et Médecine Nucléaire,
Faculté de Médecine, Université
de Montréal, Pavillon
Roger-Gaudry, 2900 Boulevard Edouard Montpetit, Montréal, Québec H3T 1J4, Canada
| | - Jean N. DaSilva
- Centre
de Recherche du CHUM, 900 rue Saint-Denis, Montréal, Québec H2X 0A9, Canada
- Département
de Pharmacologie et Physiologie, Faculté de Médecine, Université de Montréal, Pavillon Paul-G. Desmarais, 2960
chemin de la Tour, Montréal, Québec H3T 1J4, Canada
- Institut
de Génie Biomédicale, Faculté de Médecine, Université de Montréal, Pavillon Paul-G. Desmarais, 2960
chemin de la Tour, Montréal, Québec H3T 1J4, Canada
- Département
de Radiologie, Radio-Oncologie et Médecine Nucléaire,
Faculté de Médecine, Université
de Montréal, Pavillon
Roger-Gaudry, 2900 Boulevard Edouard Montpetit, Montréal, Québec H3T 1J4, Canada
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Yegorova TV, Kysil AI, Dyakonenko VV, Levkov IV, Karbovska RV, Shishkina SV, Voitenko ZV. Azido-tetrazole isomerism in 2,2-dimethyl-1-(1-methyl-1H-tetrazolo[5,1-a]isoindol-5-yl)propan-1-one. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127469] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ray A, Yousufuddin M, Gout D, Lovely CJ. Intramolecular Diels-Alder Reaction of a Silyl-Substituted Vinylimidazole en Route to the Fully Substituted Cyclopentane Core of Oroidin Dimers. Org Lett 2018; 20:5964-5968. [PMID: 30192150 DOI: 10.1021/acs.orglett.8b02675] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
An intramolecular Diels-Alder reaction of a silyl-substituted vinylimidazole delivers a diastereomeric mixture of C4-silyl functionalized dihydrobenzimidazoles. Subsequent diastereoselective reduction and elaboration of the lactone gives rise to a polysubstituted tetrahydrobenzimidazole, which, upon oxidative rearrangement, affords a single spirofused imidazolone containing all of the relevant functionality for an approach to the oroidin dimers axinellamine, massadine, and palau'amine.
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Affiliation(s)
- Abhisek Ray
- Department of Chemistry and Biochemistry , University of Texas-Arlington , Arlington , Texas 76019-0065 , United States
| | - Muhammed Yousufuddin
- Department of Chemistry and Biochemistry , University of Texas-Arlington , Arlington , Texas 76019-0065 , United States
| | - Delphine Gout
- Department of Chemistry and Biochemistry , University of Texas-Arlington , Arlington , Texas 76019-0065 , United States
| | - Carl J Lovely
- Department of Chemistry and Biochemistry , University of Texas-Arlington , Arlington , Texas 76019-0065 , United States
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Pokhodylo NT, Shyyka OY, Savka RD, Obushak MD. 2-Azido-1,3,4-thiadiazoles, 2-Azido-1,3-thiazoles, and Aryl Azides in the Synthesis of 1,2,3-Triazole-4-carboxylic Acids and Their Derivatives. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2018. [DOI: 10.1134/s1070428018070205] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Rasapalli S, Koswatta P, Lovely CJ. Corrigendum to: Oxidative reactions of tetrahydrobenzimidazole derivatives with N-sulfonyloxaziridines [Tetrahedron Lett. 48 (2007) 5771–5774]. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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10
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Pleshkova NV, Nikolaenkova EB, Krivopalov VP, Mamatyuk VI. 2,6-Disubstituted 4-azidopyrimidines: synthesis, kinetic and thermodynamic studies of azide-tetrazole rearrangement by NMR spectroscopy. Russ Chem Bull 2017. [DOI: 10.1007/s11172-017-1986-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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12
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Tahan A. Theoretical study addressing the effects of tautomerism and explicit/implicit water molecules on NQR and NMR parameters of tetrazole-5-thione. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2017; 55:606-618. [PMID: 27930819 DOI: 10.1002/mrc.4560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 11/24/2016] [Accepted: 11/30/2016] [Indexed: 06/06/2023]
Abstract
DFT/B3LYP calculations were employed to study the effects of tautomerism and explicit/implicit water molecules on Nuclear Quadrupole Resonance (NQR) and Nuclear Magnetic Resonance (NMR) tensors of nitrogen nuclei in tetrazole-5-thione structure. The obtained results revealed that nuclear quadrupole coupling constant (χ) and isotropic chemical shielding (σiso ) values of nitrogen nuclei in tetrazole ring of five possible tautomeric forms of tetrazole-5-thione, i.e. two thione forms called tautomers A and E and three thiol forms called tautomers B, C, and D, were functions of resonance energy(E2 ) values of nitrogen lone pairs. Furthermore, it was observed that by increasing participation of lone pairs of nitrogen atoms in the ring resonance interactions, the σiso values around them were increased, while their χ and qzz values were decreased. However, the results indicated that with exception of tautomer B, the order of qzz and χ values of nitrogen nuclei in tetrazole ring was exactly opposite of the order of resonance energy values for the same nitrogen nuclei in all tautomers and their mono-hydrated complexes. In addition, a significant decrease was noticed in χ and qzz values when a water molecule was put in different positions near the tetrazole ring in tautomers A-E. The mentioned result can be attributed to hydrogen bond formation between nitrogen nuclei and the oxygen of water. In mono-hydrated complexes, the σiso values around nitrogen atoms acting as hydrogen donors in hydrogen bond formation (N-H….OH2 ) were decreased, while its values were increased for nitrogen atoms acting as hydrogen acceptors in hydrogen bond formation(N….H-OH). Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Arezoo Tahan
- Semnan Branch, Islamic Azad University, Semnan, Iran
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13
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Ostrovskii V, Popova E, Trifonov R. Developments in Tetrazole Chemistry (2009–16). ADVANCES IN HETEROCYCLIC CHEMISTRY 2017. [DOI: 10.1016/bs.aihch.2016.12.003] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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14
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Theoretical study on the azido-cyclization of 3,6-diazido-1,2,4,5-tetrazine (DAT) with the dimethylsulfoxide (DMSO) solvent. COMPUT THEOR CHEM 2015. [DOI: 10.1016/j.comptc.2015.06.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Karakus N, Demirel M. The trans–cis and the azide–tetrazole ring-chain isomerization of 2-azido-1,3-azoles: Quantum chemical study. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.03.041] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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16
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Audran G, Brémond P, El Abed D, Marque SRA, Siri D, Santelli M. Computational Studies on Intramolecular Cycloadditions of Azidoenynes and Azidobutenenitriles to Give 6 H-Pyrrolo[1,2- c][1,2,3]triazoles and 5 H-Pyrrolo[1,2- d]tetrazoles. Helv Chim Acta 2015. [DOI: 10.1002/hlca.201500003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Maki H, Ryousi K, Nariai H, Mizuhata M. Synthesis, protonation equilibrium and peculiar thermal decomposition behavior of cyclo-tri-μ-imidotetraphosphate. Dalton Trans 2014; 43:11611-23. [DOI: 10.1039/c4dt00601a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and isolation of the sodium salt ofcyclo-tri-μ-imidotetraphosphate,i.e.Na4cP4O9(NH)3·H2O, were achieved by the hydrolysis of Na4cP4O8(NH)4·2H2O under very weak acidic conditions,i.e.using 0.2 mol L−1propionic acid and the pH-controlled recrystallization procedure.
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Affiliation(s)
- Hideshi Maki
- Department of Chemical Science and Engineering
- Graduate School of Engineering
- Kobe University
- Kobe 657-8501, Japan
| | - Kazuomi Ryousi
- Department of Chemical Science and Engineering
- Graduate School of Engineering
- Kobe University
- Kobe 657-8501, Japan
| | - Hiroyuki Nariai
- Department of Chemical Science and Engineering
- Graduate School of Engineering
- Kobe University
- Kobe 657-8501, Japan
| | - Minoru Mizuhata
- Department of Chemical Science and Engineering
- Graduate School of Engineering
- Kobe University
- Kobe 657-8501, Japan
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18
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He P, Zhang JG, Wang K, Yin X, Zhang SW, Jiao JS. Calculations predict a novel desired compound containing eight catenated nitrogen atoms: 1-amino-tetrazolo-[4,5-b]tetrazole. RSC Adv 2014. [DOI: 10.1039/c4ra03515a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel 8-N conjoined energetic compound 1-amino-tetrazolo-[4,5-b]tetrazole has been designed and investigated at the DFT-B3LYP/6-311++G** level of theory.
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Affiliation(s)
- Piao He
- State Key Laboratory of Explosion Science and Technology
- Beijing Institute of Technology
- Beijing 100081, P. R. China
| | - Jian-Guo Zhang
- State Key Laboratory of Explosion Science and Technology
- Beijing Institute of Technology
- Beijing 100081, P. R. China
| | - Kun Wang
- State Key Laboratory of Explosion Science and Technology
- Beijing Institute of Technology
- Beijing 100081, P. R. China
| | - Xin Yin
- State Key Laboratory of Explosion Science and Technology
- Beijing Institute of Technology
- Beijing 100081, P. R. China
| | - Shao-Wen Zhang
- School of Chemistry
- Beijing Institute of Technology
- Beijing 100081, P. R. China
| | - Jian-She Jiao
- Research Institute of FA and ADA Equipment and Technology
- General Armament Department
- Beijing 100012, P. R. China
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JIMÉNEZ-PULIDO SONIAB, ILLÁN-CABEZA NURIAA, HUESO-UREÑA FRANCISCO, MORENO-CARRETERO MIGUELN. TAUTOMERISM IN NEUTRAL AND DEPROTONATED 6-AMINO-5-FORMYLURACILS: A PM3-COSMO APPROACH. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2013. [DOI: 10.1142/s0219633613500326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In order to identify the structure of the most stable tautomers of 6-amino-5-formyluracil and its N-methylated derivatives in different pH conditions, relative stabilities of potential tautomers in aqueous phase have been calculated taking into account the entropy effects over the tautomeric equilibria. In each medium, the tautomer with lower energy must be the most representative form at the corresponding pH and the knowledge of the effect of the medium in the tautomerization energies allows evaluating the possible effect of the medium over the molecular stability. The results show that, in aqueous phase, the order of basicity of protonation sites in the 6-amino-5-formyluracil derivatives is N 9 > ( N 3 > N 1) > ( O 8 > O 4 > O 2). The 6-amino-5-formyluracil derivatives act as an amino-formyl-keto tautomer with a strong imino character, although, upon successive deprotonations, a growing contribution of enolyzed forms which explain the increasing labilization of carbonyl bonds must be pointed out.
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Affiliation(s)
| | - NURIA A. ILLÁN-CABEZA
- Department of Inorganic and Organic Chemistry, University of Jaén, 23071-Jaén, Spain
| | - FRANCISCO HUESO-UREÑA
- Department of Inorganic and Organic Chemistry, University of Jaén, 23071-Jaén, Spain
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Structure of NH-benzazoles (1H-benzimidazoles, 1H- and 2H-indazoles, 1H- and 2H-benzotriazoles). Chem Heterocycl Compd (N Y) 2013. [DOI: 10.1007/s10593-013-1237-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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22
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Liu Y, Wang G, Gong X. 2,4-Diazido-5-iodo-pyrimidine crystal under high pressure: A comparison of DFT and DFT-D studies. COMPUT THEOR CHEM 2012. [DOI: 10.1016/j.comptc.2012.09.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Liu Y, Zhang L, Wang G, Wang L, Gong X. High-pressure studies on azido-tetrazole chain–ring conversion in crystalline 2-azido-4,6-dichloro-1,3,5-triazine. Theor Chem Acc 2012. [DOI: 10.1007/s00214-012-1256-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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26
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Chen H, Zhang T, Zhang J. Crystal structure and thermal decomposition mechanism of a 5-aminotetrazole copper(II) complex. Struct Chem 2011. [DOI: 10.1007/s11224-011-9791-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Theoretical investigations on the structure and relative stabilities of the tautomeric forms of 6-amino-5-nitrosouracil and violuric acid derivatives (PM3-COSMO calculation). COMPUT THEOR CHEM 2011. [DOI: 10.1016/j.comptc.2010.12.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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28
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Zhang JG, Niu XQ, Zhang SW, Zhang TL, Huang HS, Zun-Ning Z. Novel potential high-nitrogen-content energetic compound: Theoretical study of diazido-tetrazole (CN10). COMPUT THEOR CHEM 2011. [DOI: 10.1016/j.comptc.2011.01.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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