1
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Mena A, Luna JR, MacGregor F, Landa EN, Metta-Magaña A, Lee WY, Fortier S. Photoinduced Cleavage of a Strained N-C Bond in an Iron Complex Supported by Super-Bulky Amidinate and Guanidinate Ligands. Inorg Chem 2024; 63:5351-5364. [PMID: 38481142 DOI: 10.1021/acs.inorgchem.3c03953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
The reaction of Fe2(mes)4 with the super-bulky amidines and guanidines HLAr*-R (LAr*-R = [(Ar*N)2C(R)]-, Ar* = 2,6-bis(diphenylmethyl)-4-tert-butylphenyl), R = Me (LAr*-Me), tBu (LAr*-tBu), Ph (LAr*-Ph), NiPr2 (LAr*-iPr2N), and Pip (LAr*-Pip)) gives access to the three-coordinate iron-mesityl complexes (LAr*-R)Fe(mes) only where LAr*-R = LAr*-Me, LAr*-Ph, or LAr*-Pip. Subsequent protonolysis with the N-atom transfer reagent Hdbabh (Hdbabh = 2,3:5,6-dibenzo-7-azabicyclo[2.2.1]hepta-2,5-diene) is limited in success, providing in one instance a few crystals of four-coordinate (LAr*-Me)Fe(dbabh)(Hdbabh), while three-coordinate (LAr*-Pip)Fe(dbabh) is synthesized reproducibly. Complexes (LAr*-Me)Fe(dbabh)(Hdbabh) and (LAr*-Pip)Fe(dbabh) are thermally insensitive in solution to temperatures of up to 100 °C. On the other hand, both (LAr*-Me)Fe(dbabh)(Hdbabh) and (LAr*-Pip)Fe(dbabh) show sensitivity to blue LED light (395 nm), undergoing photochemical transformations. For instance, the photolysis of (LAr*-Me)Fe(dbabh)(Hdbabh) leads to N-C bond scission and C-C bond coupling across the -dbabh moieties to give four-coordinate (LAr*-Me)Fe(N=dbabh-dbabhNH2). Photolyzing pyridine-d5 (py-d5) solutions of (LAr*-Pip)Fe(dbabh) at -5 °C produces a new paramagnetic photoproduct, [P]. Due to the thermal sensitivity of compound [P], it has eluded structural characterization; yet, Evans' method measurements suggest that the iron(II) oxidation state is maintained, thereby pointing to the -dbabh moiety as the locus of chemical change. In line with this assessment, addition of excess Me3SiCl to solutions of [P] produces the iron(II) complex (LAr*-Pip)FeCl(py-d5) as shown by 1H NMR spectroscopy. Gas chromatography/mass spectrometry analysis of the solutions of [P] shows a peak in the chromatogram with a molecular mass corresponding to a formulation of C14H11N that cannot be attributed to Hdbabh. This provides evidence for the photochemical-induced isomerization of the -dbabh ligand, revealing a heretofore unknown photochemical sensitivity of this N atom transfer reagent.
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Affiliation(s)
- Asiel Mena
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Juan R Luna
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Frank MacGregor
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Elizabeth Noriega Landa
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Alejandro Metta-Magaña
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Wen-Yee Lee
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, Texas 79968, United States
| | - Skye Fortier
- Department of Chemistry and Biochemistry, University of Texas at El Paso, El Paso, Texas 79968, United States
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2
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Ohwada T. 窒素原子を含む結合活性化学種の発見. YAKUGAKU ZASSHI 2023; 143:323-336. [PMID: 37005231 DOI: 10.1248/yakushi.22-00206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
In this review, the authors review and explain their research on "Discovery of Bonding Active Species Containing Nitrogen Atoms" from the past to the present. The authors are interested in new chemical phenomena, especially in the activation of chemical bonds containing nitrogen atoms, and have conducted research to discover chemical bonds with new properties. The activated chemical bonds containing nitrogen atoms are the following (Fig. 1). (1) Rotationally activated C-N bonds by pyramidalization of amide nitrogen atoms (2) N-N bond cleavage ability with reduced bond strength by pyramidalization of nitrosamine nitrogen atoms (3) Transient hetero atom-N bond formation by neighboring group participation of a halogen electron to the nitrogen cation. (4) A unique carbon cation reaction involving nitrogen atoms, especially nitro groups (C-NO2 bond) and ammonium ions (C-NH3+ bond). These purely basic chemistry discoveries unexpectedly led to the creation of functional materials, especially biologically active molecules. We will explain how new chemical bonds led to the creation of new functions.
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Affiliation(s)
- Tomohiko Ohwada
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
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3
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Wysocki MM, Puzovic G, Dowell KL, Reinheimer EW, Gerlach DL. Crystal structure of 1 H-imidazole-1-methanol. ACTA CRYSTALLOGRAPHICA SECTION E CRYSTALLOGRAPHIC COMMUNICATIONS 2022; 78:377-380. [PMID: 35492285 PMCID: PMC8983985 DOI: 10.1107/s2056989022002614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 03/07/2022] [Indexed: 11/29/2022]
Abstract
The crystal structure of methanol imidazole featuring a tri-molecule hydrogen-bonded macrocycle is described. The synthesis and the crystal structure of 1H-imidazole-1-methanol, C4H6N2O, are described. This compound comprises an imidazole ring with a methanol group attached at the 1-position affording an imine nitrogen atom able to receive a hydrogen bond and an alcohol group able to donate to a hydrogen bond. This imidazole methanol crystallizes with monoclinic (P21/n) symmetry with three symmetry-unique molecules. These three molecules are connected via O—H⋯N hydrogen bonding in a head-to-tail configuration to form independent three-membered macrocycles.
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Paul S, Pan S, Mukherjee A, De P. Nitric Oxide Releasing Delivery Platforms: Design, Detection, Biomedical Applications, and Future Possibilities. Mol Pharm 2021; 18:3181-3205. [PMID: 34433264 DOI: 10.1021/acs.molpharmaceut.1c00486] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Gasotransmitters belong to the subfamily of endogenous gaseous signaling molecules, which find a wide range of biomedical applications. Among the various gasotransmitters, nitric oxide (NO) has an enormous effect on the cardiovascular system. Apart from this, NO showed a pivotal role in neurological, respiratory, and immunological systems. Moreover, the paradoxical concentration-dependent activities make this gaseous signaling molecule more interesting. The gaseous NO has negligible stability in physiological conditions (37 °C, pH 7.4), which restricts their potential therapeutic applications. To overcome this issue, various NO delivering carriers were reported so far. Unfortunately, most of these NO donors have low stability, short half-life, or low NO payload. Herein, we review the synthesis of NO delivering motifs, development of macromolecular NO donors, their advantages/disadvantages, and biological applications. Various NO detection analytical techniques are discussed briefly, and finally, a viewpoint about the design of polymeric NO donors with improved physicochemical characteristics is predicted.
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Patil DV, Si T, Kim HY, Oh K. Visible-Light-Induced Photoaddition of N-Nitrosoalkylamines to Alkenes: One-Pot Tandem Approach to 1,2-Diamination of Alkenes from Secondary Amines. Org Lett 2021; 23:3105-3109. [PMID: 33792333 DOI: 10.1021/acs.orglett.1c00786] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The generation of aminium radical cation species from N-nitrosoamines is disclosed for the first time through visible-light excitation at 453 nm. The developed visible-light-promoted photoaddition reaction of N-nitrosoamines to alkenes was combined with the o-NQ-catalyzed aerobic oxidation protocol of amines to telescope the direct handling of harmful N-nitroso compounds, where the desired α-amino oxime derivatives were obtained in a one-pot tandem N-nitrosation and photoaddition sequence.
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Affiliation(s)
- Dilip V Patil
- Center for Metareceptome Research, Graduate School of Pharmaceutical Sciences, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Tengda Si
- Center for Metareceptome Research, Graduate School of Pharmaceutical Sciences, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Hun Young Kim
- Department of Global Innovative Drugs, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
| | - Kyungsoo Oh
- Center for Metareceptome Research, Graduate School of Pharmaceutical Sciences, Chung-Ang University, 84 Heukseok-ro, Dongjak, Seoul 06974, Republic of Korea
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6
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Xu X, Sun M, Luo X, Zhang Z, Su L, Cui L, Zhu Z, Lu X, Wang R, Han F, Qian X, Yang Y. One-electron reduction triggered nitric oxide release for ischemia-reperfusion protection. Free Radic Biol Med 2021; 164:13-19. [PMID: 33418107 DOI: 10.1016/j.freeradbiomed.2020.12.443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/23/2020] [Accepted: 12/29/2020] [Indexed: 12/25/2022]
Abstract
Nitric oxide donors (NODs) are indispensable in biological research and disease treatment. NODs had been utilized to treat cardiovascular diseases in clinic and many others are under trial. Thiols are typically required for these donors to release NO. Yet, their mechanism is complex and often lead to resistance. Herein, we reported that N-nitrosated electron-deficient dyes are capable of NO release with one-electron reduction. A fluorophore is generated simultaneously, whose fluorescence is harnessed to monitor the profile of NO release. Through electrochemical and spectral studies, NOD f3 was found to exhibit good biocompatibility and high reduction efficiency and its potentials in cell-protection in oxygen and glucose deprivation (OGD) models were showcased with endothelial cells. This work aims at offering a new approach to design reduction-triggered NOD, which have therapeutic potentials in ischemia-reperfusion.
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Affiliation(s)
- Xiu Xu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Meiling Sun
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Xiao Luo
- School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China
| | - Ziqian Zhang
- Guangxi Scientific Research Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, 530200, China
| | - Lin Su
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Lingfei Cui
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Zhihui Zhu
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Xicun Lu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Rui Wang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Feng Han
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China.
| | - Xuhong Qian
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Youjun Yang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
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7
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Yuan PF, Huang T, He J, Huang XT, Jin XL, Sun C, Wu LZ, Liu Q. Controllable Z/ E-selective synthesis of α-amino-ketoximes from N-nitrososulfonamides and aryl alkenes under neutral conditions. Org Chem Front 2021. [DOI: 10.1039/d1qo01101d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
An amidoximation of alkenes with N-nitrososulfonamides enabled by triplet energy transfer under neutral conditions is presented. Both (Z)- and (E)-α-amino-ketoximes are selectively accessible depending on the triplet energy of the photosensitizer.
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Affiliation(s)
- Pan-Feng Yuan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Tao Huang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Jian He
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xie-Tian Huang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xiao-Ling Jin
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Chunlin Sun
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Qiang Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
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8
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López-Rodríguez R, McManus JA, Murphy NS, Ott MA, Burns MJ. Pathways for N-Nitroso Compound Formation: Secondary Amines and Beyond. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00323] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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9
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Aqeel A, Lim HJ. Role of various factors affecting the photochemical treatment of N-nitrosamines related to CO 2 capture. ENVIRONMENTAL TECHNOLOGY 2020; 41:1391-1400. [PMID: 30339495 DOI: 10.1080/09593330.2018.1536172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Accepted: 10/08/2018] [Indexed: 06/08/2023]
Abstract
Post-combustion CO2 capture using amine solvents is the most feasible method of reducing anthropogenic CO2 emissions, which are the largest contributor to global warming. The formation of carcinogenic N-nitrosamines (i.e. by-products) can hinder the industrial application of this technology. In this study, the effects of direct UV photolysis (N-nitrosamine concentration and amines) and advanced oxidation processes (UV/H2O2 and UV/O3) on the three specific N-nitrosamines that are commonplace in amine-based CO2 capture (i.e. N-nitrosodiethylamine (NDEA), N-nitrosodiethanolamine (NDELA), and N-nitrosomorpholine (NMOR)) were examined. A significant decrease in the photodegradation rate constants was observed for NDEA (1.02 × 100 to 2.94 × 10-1 min-1), NDELA (1.52 × 100 to 3.32 × 10-1 min-1), and NMOR (1.93 × 100 to 2.20 × 10-1 min-1) as their concentrations increased within 1-50 mg/L. This is the first report of a significant increase in the degradation rate constants of N-nitrosamine with an increase in amine concentrations (i.e. monoethanolamine, diethanolamine, and morpholine) within 10-200 mM. The photodegradation rate constants increased as the molar ratio of H2O2 to N-nitrosamine increased to 20, but then decreased at molar ratios beyond this. O3 had a negligible effect on the photodegradation of N-nitrosamines.
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Affiliation(s)
- Afzal Aqeel
- Department of Environmental Engineering, Kyungpook National University, Daegu, Republic of Korea
| | - Ho-Jin Lim
- Department of Environmental Engineering, Kyungpook National University, Daegu, Republic of Korea
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10
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Li L, Liu J, Ding Y, Shi Z, Peng B, Yang N, Hong D, Zhang C, Yao C, Ge J, Huang W. Design, synthesis and evaluation of protein disulfide isomerase inhibitors with nitric oxide releasing activity. Bioorg Med Chem Lett 2020; 30:126898. [DOI: 10.1016/j.bmcl.2019.126898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/27/2019] [Accepted: 12/07/2019] [Indexed: 01/27/2023]
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11
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Duan Y, Wang Y, Li X, Zhang G, Zhang G, Hu J. Light-triggered nitric oxide (NO) release from photoresponsive polymersomes for corneal wound healing. Chem Sci 2020; 11:186-194. [PMID: 32110370 PMCID: PMC7012058 DOI: 10.1039/c9sc04039k] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 10/31/2019] [Indexed: 12/25/2022] Open
Abstract
Polymersomes have been extensively used in the delivery of both small and macromolecular payloads. However, the controlled delivery of gaseous therapeutics (e.g., nitric oxide, NO) remains a grand challenge due to its difficulty in loading of gaseous payloads into polymersomes without premature leakage. Herein, NO-releasing vesicles could be fabricated via the self-assembly of NO-releasing amphiphiles, which were synthesized by the direct polymerization of photoresponsive NO monomers (abbreviated as oNBN, pNBN, and BN). These monomers were rationally designed through the integration of the photoresponsive behavior of N-nitrosoamine moieties and the self-immolative chemistry of 4-aminobenzyl alcohol derivatives, which outperformed conventional NO donors such as diazeniumdiolates (NONOates) and S-nitrosothiols (SNOs) in terms of ease of preparation, stability of storage, and controllability of NO release. The unique design made it possible to selectively release NO by a light stimulus and to regulate the NO release rates. Importantly, the photo-mediated NO release could be manipulated in living cells and showed promising applications in the treatment of corneal wounds. In addition to delivering NO, the current design enabled the synergistic delivery of NO and other therapeutic payloads by taking advantage of NO release-mediated traceless crosslinking of the vesicles.
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Affiliation(s)
- Yutian Duan
- CAS Key Laboratory of Soft Matter Chemistry , Hefei National Laboratory for Physical Science at the Microscale , Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei 230026 , Anhui , China .
| | - Yong Wang
- Department of Ophthalmology , The First Affiliated Hospital of Anhui Medical University , Hefei , Anhui 230022 , China
| | - Xiaohu Li
- Department of Radiology , The First Affiliated Hospital of Anhui Medical University , Hefei , Anhui 230022 , China
| | - Guozhen Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale , iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Guoying Zhang
- CAS Key Laboratory of Soft Matter Chemistry , Hefei National Laboratory for Physical Science at the Microscale , Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei 230026 , Anhui , China .
| | - Jinming Hu
- CAS Key Laboratory of Soft Matter Chemistry , Hefei National Laboratory for Physical Science at the Microscale , Department of Polymer Science and Engineering , University of Science and Technology of China , Hefei 230026 , Anhui , China .
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12
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Cheng J, He K, Shen Z, Zhang G, Yu Y, Hu J. Nitric Oxide (NO)-Releasing Macromolecules: Rational Design and Biomedical Applications. Front Chem 2019; 7:530. [PMID: 31403044 PMCID: PMC6676249 DOI: 10.3389/fchem.2019.00530] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Accepted: 07/11/2019] [Indexed: 01/19/2023] Open
Abstract
Nitric oxide (NO) has been recognized as a ubiquitous gaseous transmitter and the therapeutic potential has nowadays received increasing interest. However, NO cannot be easily directly administered due to its high reactivity in air and high concentration-dependent physiological roles. As such, a plethora of NO donors have been developed that can reversibly store and release NO under specific conditions. To enhance the stability and modulate the NO release profiles, small molecule-based NO donors were covalently linked to polymeric scaffolds, rendering them with multifunctional integration, prolonged release durations, and optimized therapeutic outcomes. In this minireview, we highlight the recent achievements of NO-releasing macromolecules in terms of chemical design and biomedical applications. We hope that more efforts could be devoted to this emerging yet promising field.
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Affiliation(s)
- Jian Cheng
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Science at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Kewu He
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Zhiqiang Shen
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Science at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Guoying Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Science at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
| | - Yongqiang Yu
- Department of Radiology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Jinming Hu
- CAS Key Laboratory of Soft Matter Chemistry, Hefei National Laboratory for Physical Science at the Microscale, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, China
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13
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Liu T, Qiao Z, Wang J, Zhang P, Zhang Z, Guo DS, Yang X. Molecular imprinted S-nitrosothiols nanoparticles for nitric oxide control release as cancer target chemotherapy. Colloids Surf B Biointerfaces 2019; 173:356-365. [DOI: 10.1016/j.colsurfb.2018.09.078] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 09/16/2018] [Accepted: 09/29/2018] [Indexed: 12/14/2022]
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14
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He H, Xia Y, Qi Y, Wang HY, Wang Z, Bao J, Zhang Z, Wu FG, Wang H, Chen D, Yang D, Liang X, Chen J, Zhou S, Liang X, Qian X, Yang Y. A Water-Soluble, Green-Light Triggered, and Photo-Calibrated Nitric Oxide Donor for Biological Applications. Bioconjug Chem 2018; 29:1194-1198. [PMID: 29498825 DOI: 10.1021/acs.bioconjchem.7b00821] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Nitric oxide (NO) is a versatile endogenous molecule, involved in various physiological processes and implicated in the progression of many pathological conditions. Therefore, NO donors are valuable tools in NO related basic and applied applications. The traditional spontaneous NO donors are limited in scenarios where flux, localization, and dose of NO could be monitored. This has promoted the development of novel NO donors, whose NO release is not only under control, but also self-calibrated. Herein, we reported a phototriggered and photocalibrated NO donor (NOD565) with an N-nitroso group on a rhodamine dye. NOD565 is nonfluorescent and could release NO efficiently upon irradiation by green light. A bright rhodamine dye is generated as a side-product and its fluorescence can be used to monitor the NO release. The potentials of NOD565 in practical applications are showcased in in vitro studies, e.g., platelet aggregation inhibition and fungi growth suppression.
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Affiliation(s)
- Haihong He
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, Shanghai Key Laboratory of New Drug Design, School of Pharmacy , East China University of Science and Technology , Shanghai , 200237 , China
| | - Yang Xia
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, Shanghai Key Laboratory of New Drug Design, School of Pharmacy , East China University of Science and Technology , Shanghai , 200237 , China
| | - Yingxue Qi
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, Shanghai Key Laboratory of New Drug Design, School of Pharmacy , East China University of Science and Technology , Shanghai , 200237 , China
| | - Hong-Yin Wang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing , Jiangsu 210096 , China
| | - Zhuang Wang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, Shanghai Key Laboratory of New Drug Design, School of Pharmacy , East China University of Science and Technology , Shanghai , 200237 , China
| | - Jianming Bao
- School of Life Science and Biopharmaceutics , Shenyang Pharmaceutical University , Shenyang , Liaoning 110016 , China
| | - Ziqian Zhang
- Guangxi Scientific Research Center of Traditional Chinese Medicine , Guangxi University of Chinese Medicine , Nanning , Guangxi 530200 , China
| | - Fu-Gen Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing , Jiangsu 210096 , China
| | - Haolu Wang
- Therapeutics Research Centre, The University of Queensland Diamantina Institute , The University of Queensland, Translational Research Institute , Woolloongabba , QLD 4102 , Australia
| | - Daijie Chen
- School of Pharmacy , Shanghai Jiao Tong University , Shanghai , 200240 , China
| | - Dahai Yang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, Shanghai Key Laboratory of New Drug Design, School of Pharmacy , East China University of Science and Technology , Shanghai , 200237 , China
| | - Xiaowen Liang
- Therapeutics Research Centre, The University of Queensland Diamantina Institute , The University of Queensland, Translational Research Institute , Woolloongabba , QLD 4102 , Australia
| | - Jinquan Chen
- State Key Laboratory of Precision Spectroscopy , East China Normal University , Shanghai , 200062 , China
| | - Shengmin Zhou
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, Shanghai Key Laboratory of New Drug Design, School of Pharmacy , East China University of Science and Technology , Shanghai , 200237 , China
| | - Xin Liang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, Shanghai Key Laboratory of New Drug Design, School of Pharmacy , East China University of Science and Technology , Shanghai , 200237 , China
| | - Xuhong Qian
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, Shanghai Key Laboratory of New Drug Design, School of Pharmacy , East China University of Science and Technology , Shanghai , 200237 , China
| | - Youjun Yang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, Shanghai Key Laboratory of New Drug Design, School of Pharmacy , East China University of Science and Technology , Shanghai , 200237 , China
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15
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Chen J, Zou L, Zeng C, Zhou Y, Fan B. Rhodium-Catalyzed Asymmetric Arylative Ring-Opening Reactions of Heterobicyclic Alkenes with Anilines. Org Lett 2018; 20:1283-1286. [DOI: 10.1021/acs.orglett.7b03941] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jingchao Chen
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine and ‡Key Laboratory
of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming, Yunnan 650500, People’s Republic of China
| | - Lingling Zou
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine and ‡Key Laboratory
of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming, Yunnan 650500, People’s Republic of China
| | - Chaoyuan Zeng
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine and ‡Key Laboratory
of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming, Yunnan 650500, People’s Republic of China
| | - Yongyun Zhou
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine and ‡Key Laboratory
of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming, Yunnan 650500, People’s Republic of China
| | - Baomin Fan
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine and ‡Key Laboratory
of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming, Yunnan 650500, People’s Republic of China
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16
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Chen J, Xu X, He Z, Qin H, Sun W, Fan B. Nickel/Zinc Iodide Co-catalytic Asymmetric [2+2] Cycloaddition Reactions of Azabenzonorbornadienes with Terminal Alkynes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701133] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jingchao Chen
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University; Yuehua Street Kunming 650500 People's Repulic of China
| | - Xin Xu
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University; Yuehua Street Kunming 650500 People's Repulic of China
| | - Zhenxiu He
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University; Yuehua Street Kunming 650500 People's Repulic of China
| | - Hongyu Qin
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University; Yuehua Street Kunming 650500 People's Repulic of China
| | - Weiqing Sun
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University; Yuehua Street Kunming 650500 People's Repulic of China
| | - Baomin Fan
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University; Yuehua Street Kunming 650500 People's Repulic of China
- Key Laboratory of Chemistry in Ethnic Medicinal Resources; Yunnan Minzu University; Yuehua Street Kunming 650500 People's Repulic of China
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17
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Ding G, Wu X, Jiang L, Zhang Z, Xie X. Reduction of Benzolactams to Isoindoles via an Alkoxide-Catalyzed Hydrosilylation. Org Lett 2017; 19:6048-6051. [PMID: 29077418 DOI: 10.1021/acs.orglett.7b02739] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An alkoxide-catalyzed reduction of benzolactams to isoindoles with silanes was realized. With t-BuOK as the catalyst and Ph2SiH2 as the reductant, a series of benzolactams containing different functional groups were reduced to the corresponding isoindoles, which could be captured by N-phenyl maleimide to form Diels-Alder products in moderate to good yields. Deuterium labeling studies and the hydrosilylation of benzolactam in DMF indicated that the deprotonation of benzolactams took place at C3 potion during the reduction.
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Affiliation(s)
- Guangni Ding
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaoyu Wu
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, China
| | - Lili Jiang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, China
| | - Zhaoguo Zhang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaomin Xie
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, Shanghai 200240, China
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18
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McCarthy MC, Lee KLK, Stanton JF. Detection and structural characterization of nitrosamide H 2NNO: A central intermediate in deNO x processes. J Chem Phys 2017; 147:134301. [PMID: 28987087 DOI: 10.1063/1.4992097] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The structure and bonding of H2NNO, the simplest N-nitrosamine, and a key intermediate in deNOx processes, have been precisely characterized using a combination of rotational spectroscopy of its more abundant isotopic species and high-level quantum chemical calculations. Isotopic spectroscopy provides compelling evidence that this species is formed promptly in our discharge expansion via the NH2 + NO reaction and is collisionally cooled prior to subsequent unimolecular rearrangement. H2NNO is found to possess an essentially planar geometry, an NNO angle of 113.67(5)°, and a N-N bond length of 1.342(3) Å; in combination with the derived nitrogen quadrupole coupling constants, its bonding is best described as an admixture of uncharged dipolar (H2N-N=O, single bond) and zwitterion (H2N+=N-O-, double bond) structures. At the CCSD(T) level, and extrapolating to the complete basis set limit, the planar geometry appears to represent the minimum of the potential surface, although the torsional potential of this molecule is extremely flat.
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Affiliation(s)
- Michael C McCarthy
- Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA and School of Engineering and Applied Sciences, Harvard University, 29 Oxford St., Cambridge, Massachusetts 02138, USA
| | - Kin Long Kelvin Lee
- Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA and School of Engineering and Applied Sciences, Harvard University, 29 Oxford St., Cambridge, Massachusetts 02138, USA
| | - John F Stanton
- Department of Chemistry and Biochemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712-0165, USA
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19
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Ghogare AA, Debaz CJ, Silva Oliveira M, Abramova I, Mohapatra PP, Kwon K, Greer EM, Prado FM, Valerio HP, Di Mascio P, Greer A. Experimental and DFT Computational Insight into Nitrosamine Photochemistry—Oxygen Matters. J Phys Chem A 2017; 121:5954-5966. [DOI: 10.1021/acs.jpca.7b02414] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ashwini A. Ghogare
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
- Ph.D.
Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
| | - Ciro J. Debaz
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
| | - Marilene Silva Oliveira
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP, 05508-000 São Paulo, Brazil
| | - Inna Abramova
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
| | - Prabhu P. Mohapatra
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
| | - Kitae Kwon
- Department
of Natural Sciences, Baruch College, City University of New York, New York 10010, United States
| | - Edyta M. Greer
- Department
of Natural Sciences, Baruch College, City University of New York, New York 10010, United States
| | - Fernanda Manso Prado
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP, 05508-000 São Paulo, Brazil
| | - Hellen Paula Valerio
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP, 05508-000 São Paulo, Brazil
| | - Paolo Di Mascio
- Departamento
de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP, 05508-000 São Paulo, Brazil
| | - Alexander Greer
- Department
of Chemistry, Brooklyn College, 2900 Bedford Avenue, Brooklyn, New York 11210, United States
- Ph.D.
Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
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20
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Zhang W, Chen J, Zeng G, Yang F, Xu J, Sun W, Shinde MV, Fan B. Asymmetric Ring-Opening Reactions of Aza- and Oxa-bicyclic Alkenes with Boronic Acids Using a Palladium/Zinc Co-catalytic System. J Org Chem 2017; 82:2641-2647. [DOI: 10.1021/acs.joc.6b03038] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Wei Zhang
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine and ‡Key Laboratory
of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming, Yunnan People’s Republic of China
| | - Jingchao Chen
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine and ‡Key Laboratory
of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming, Yunnan People’s Republic of China
| | - Guangzhi Zeng
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine and ‡Key Laboratory
of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming, Yunnan People’s Republic of China
| | - Fan Yang
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine and ‡Key Laboratory
of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming, Yunnan People’s Republic of China
| | - Jianbin Xu
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine and ‡Key Laboratory
of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming, Yunnan People’s Republic of China
| | - Weiqing Sun
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine and ‡Key Laboratory
of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming, Yunnan People’s Republic of China
| | - Madhuri Vikas Shinde
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine and ‡Key Laboratory
of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming, Yunnan People’s Republic of China
| | - Baomin Fan
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine and ‡Key Laboratory
of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming, Yunnan People’s Republic of China
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21
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Xie X, Fan J, Liang M, Li Y, Jiao X, Wang X, Tang B. A two-photon excitable and ratiometric fluorogenic nitric oxide photoreleaser and its biological applications. Chem Commun (Camb) 2017; 53:11941-11944. [DOI: 10.1039/c7cc06820d] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We report a two-photon excitable nitric oxide photoreleaser with ratiometric fluorescence variation, its spatiotemporally controlled release and biological applications.
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Affiliation(s)
- Xilei Xie
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Jilin Fan
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Muwen Liang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Yong Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Xiaoyun Jiao
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Xu Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Bo Tang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
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22
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Bohle DS, Chua Z, Perepichka I, Rosadiuk K. Lewis acid stabilization and activation of primary N-nitrosamides. RSC Adv 2017. [DOI: 10.1039/c6ra24421a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The primary nitrosamides, here exemplified by the N-nitrosoalkylcarbamates, ROC(O)NHNO [R = CH3 (1), R = C2H5 (2)], show a markedly Lewis acid dependent chemistry.
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Affiliation(s)
| | - Zhijie Chua
- Department of Chemistry
- McGill University
- Montreal
- Canada
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23
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Zhou Y, Gu C, Chen J, Zhu M, Yang F, Xu J, Fan B. Enantioselective Ring Opening Reactions of Azabenzonorbornadienes with Carboxylic Acids. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600520] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yongyun Zhou
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University, Kunming; Yunnan People's Republic of China
- Key Laboratory of Chemistry in Ethnic Medicinal Resources; Yunnan Minzu University, Kunming; Yunnan 650500 People's Republic of China
| | - Cuiping Gu
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University, Kunming; Yunnan People's Republic of China
| | - Jingchao Chen
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University, Kunming; Yunnan People's Republic of China
- Key Laboratory of Chemistry in Ethnic Medicinal Resources; Yunnan Minzu University, Kunming; Yunnan 650500 People's Republic of China
| | - Meina Zhu
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University, Kunming; Yunnan People's Republic of China
| | - Fan Yang
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University, Kunming; Yunnan People's Republic of China
| | - Jianbin Xu
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University, Kunming; Yunnan People's Republic of China
| | - Baomin Fan
- YMU-HKBU Joint Laboratory of Traditional Natural Medicine; Yunnan Minzu University, Kunming; Yunnan People's Republic of China
- Key Laboratory of Chemistry in Ethnic Medicinal Resources; Yunnan Minzu University, Kunming; Yunnan 650500 People's Republic of China
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24
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Kozai D, Sakaguchi R, Ohwada T, Mori Y. Deciphering Subtype-Selective Modulations in TRPA1 Biosensor Channels. Curr Neuropharmacol 2016; 13:266-78. [PMID: 26411770 PMCID: PMC4598439 DOI: 10.2174/1570159x1302150525122020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The transient receptor potential (TRP) proteins are a family of ion channels that act as
cellular sensors. Several members of the TRP family are sensitive to oxidative stress mediators.
Among them, TRPA1 is remarkably susceptible to various oxidants, and is known to mediate
neuropathic pain and respiratory, vascular and gastrointestinal functions, making TRPA1 an
attractive therapeutic target. Recent studies have revealed a number of modulators (both activators and inhibitors) that act
on TRPA1. Endogenous mediators of oxidative stress and exogenous electrophiles activate TRPA1 through oxidative
modification of cysteine residues. Non-electrophilic compounds also activate TRPA1. Certain non-electrophilic
modulators may act on critical non-cysteine sites in TRPA1. However, a method to achieve selective modulation of
TRPA1 by small molecules has not yet been established. More recently, we found that a novel N-nitrosamine compound
activates TRPA1 by S-nitrosylation (the addition of a nitric oxide (NO) group to cysteine thiol), and does so with
significant selectivity over other NO-sensitive TRP channels. It is proposed that this subtype selectivity is conferred
through synergistic effects of electrophilic cysteine transnitrosylation and molecular recognition of the non-electrophilic
moiety on the N-nitrosamine. In this review, we describe the molecular pharmacology of these TRPA1 modulators and
discuss their modulatory mechanisms.
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Affiliation(s)
| | | | | | - Yasuo Mori
- Laboratory of Molecular Biology, Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura Campus, Nishikyoku, Kyoto 615-8510, Japan.
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25
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Zhang Z, Wu J, Shang Z, Wang C, Cheng J, Qian X, Xiao Y, Xu Z, Yang Y. Photocalibrated NO Release from N-Nitrosated Napthalimides upon One-Photon or Two-Photon Irradiation. Anal Chem 2016; 88:7274-80. [DOI: 10.1021/acs.analchem.6b01603] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
| | | | | | - Chao Wang
- State
Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116024, China
| | | | | | - Yi Xiao
- State
Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning 116024, China
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26
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27
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Oliveira MS, Ghogare AA, Abramova I, Greer EM, Prado FM, Di Mascio P, Greer A. Mechanism of Photochemical O-Atom Exchange in Nitrosamines with Molecular Oxygen. J Org Chem 2015; 80:6119-27. [PMID: 26000876 DOI: 10.1021/acs.joc.5b00633] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The detection of an oxygen-atom photoexchange process of N-nitrosamines is reported. The photolysis of four nitrosamines (N-nitrosodiphenylamine 1, N-nitroso-N-methylaniline 2, N-butyl-N-(4-hydroxybutyl)nitrosamine 3, and N-nitrosodiethylamine 4) with ultraviolet light was examined in an (18)O2-enriched atmosphere in solution. HPLC/MS and HPLC-MS/MS data show that (18)O-labeled nitrosamines were generated for 1 and 2. In contrast, nitrosamines 3 and 4 do not exchange the (18)O label and instead decomposed to amines and/or imines under the conditions. For 1 and 2, the (18)O atom was found not to be introduced by moisture or by singlet oxygen [(18)((1)O2 (1)Δg)] produced thermally by (18)O-(18)O labeled endoperoxide of N,N'-di(2,3-hydroxypropyl)-1,4-naphthalene dipropanamide (DHPN(18)O2) or by visible-light sensitization. A density functional theory study of the structures and energetics of peroxy intermediates arising from reaction of nitrosamines with O2 is also presented. A reversible head-to-tail dimerization of the O-nitrooxide to the 1,2,3,5,6,7-hexaoxadiazocane (30 kcal/mol barrier) with extrusion of O═(18)O accounts for exchange of the oxygen atom label. The unimolecular cyclization of O-nitrooxide to 1,2,3,4-trioxazetidine (46 kcal/mol barrier) followed by a retro [2 + 2] reaction is an alternative, but higher energy process. Both pathways would require the photoexcitation of the nitrooxide.
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Affiliation(s)
- Marilene Silva Oliveira
- †Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP 05508-000, São Paulo, Brazil.,‡Department of Chemistry and Graduate Center, Brooklyn College, City University of New York, Brooklyn, New York 11210, United States
| | - Ashwini A Ghogare
- ‡Department of Chemistry and Graduate Center, Brooklyn College, City University of New York, Brooklyn, New York 11210, United States
| | - Inna Abramova
- ‡Department of Chemistry and Graduate Center, Brooklyn College, City University of New York, Brooklyn, New York 11210, United States
| | - Edyta M Greer
- §Department of Natural Sciences, Baruch College, City University of New York, New York, New York 10010, United States
| | - Fernanda Manso Prado
- †Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP 05508-000, São Paulo, Brazil
| | - Paolo Di Mascio
- †Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP 05508-000, São Paulo, Brazil
| | - Alexander Greer
- ‡Department of Chemistry and Graduate Center, Brooklyn College, City University of New York, Brooklyn, New York 11210, United States
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28
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Inami K, Shiino J, Hagiwara S, Takeda K, Mochizuki M. Transnitrosation of non-mutagenic N-nitrosoproline forms mutagenic N-nitroso-N-methylurea. Bioorg Med Chem 2015; 23:3297-302. [PMID: 25975641 DOI: 10.1016/j.bmc.2015.04.058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 04/17/2015] [Accepted: 04/18/2015] [Indexed: 10/23/2022]
Abstract
N-Nitroso-N-methylurea (NMU) is a potent carcinogen and suspected as a cause of human cancer. In this study, mutagenic NMU was detected by HPLC after the transnitrosation of non-mutagenic N-nitrosoproline (NP) to N-methylurea in the presence of thiourea (TU) under acidic conditions. The structure of NMU was confirmed by comparing (1)H NMR and IR spectra with that of authentic NMU after fractionation by column chromatography. Furthermore, a fraction containing NMU formed by transnitrosation was mutagenic in Salmonella typhimurium TA1535. NMU was formed in the reaction of NP and N-methylurea in the presence of 1,1,3,3-tetramethylthiourea (TTU) or 1,3-dimethylthiourea in place of TU as an accelerator. The reaction rate constants (k) for NMU formation were correlated with their nucleophilicity of sulfur atom in thioureas. The N-methylurea concentration did not affect the NMU formation, whereas the rate of NMU formation correlated linearly with concentrations of NP, TTU and oxonium ion. The observed kinetics suggests a mechanism by which the nitroso group was transferred directly from the protonated NP to the thiourea then to N-methylurea to form NMU. The rate-determining step was the formation of the complex with the protonated NP and thiourea.
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Affiliation(s)
- Keiko Inami
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamazaki 2641, Noda-shi, Chiba 278-8510, Japan; Kyoritsu University of Pharmacy, Shibakoen 1-5-30, Minato-ku, Tokyo 105-8512, Japan.
| | - Junko Shiino
- Kyoritsu University of Pharmacy, Shibakoen 1-5-30, Minato-ku, Tokyo 105-8512, Japan
| | - Shin Hagiwara
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamazaki 2641, Noda-shi, Chiba 278-8510, Japan
| | - Kei Takeda
- Kyoritsu University of Pharmacy, Shibakoen 1-5-30, Minato-ku, Tokyo 105-8512, Japan
| | - Masataka Mochizuki
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Yamazaki 2641, Noda-shi, Chiba 278-8510, Japan; Kyoritsu University of Pharmacy, Shibakoen 1-5-30, Minato-ku, Tokyo 105-8512, Japan
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29
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Liu T, Zhang D, Yang X, Li C. Silica/polymer microspheres and hollow polymer microspheres as scaffolds for nitric oxide release in PBS buffer and bovine serum. Polym Chem 2015. [DOI: 10.1039/c4py01326c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
SiO2/P(AmEMA-co-EGDMA) core–shell microspheres and hollow P(AmEMA-co-EGDMA) nanospheres are prepared as NO donors.
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Affiliation(s)
- Tuanwei Liu
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
| | - Dongwei Zhang
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
| | - Xinlin Yang
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
| | - Chenxi Li
- Key Laboratory of Functional Polymer Materials
- Ministry of Education
- Institute of Polymer Chemistry
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
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30
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Pandey G, Varkhedkar R, Tiwari D. Efficient access to enantiopure 1,3-disubstituted isoindolines from selective catalytic fragmentation of an original desymmetrized rigid overbred template. Org Biomol Chem 2015; 13:4438-48. [DOI: 10.1039/c5ob00229j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enantiopure 1,3-disubstituted isoindolines are synthesized from selective C–C bond fragmentation of a rigid overbred template, obtained through an asymmetric desymmetrization reaction.
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Affiliation(s)
- Ganesh Pandey
- Molecular Synthesis Laboratory
- Centre of Biomedical Research (CBMR)
- Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus
- Lucknow-226 014
- India
| | - Rajesh Varkhedkar
- Molecular Synthesis Laboratory
- Centre of Biomedical Research (CBMR)
- Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus
- Lucknow-226 014
- India
| | - Divya Tiwari
- Molecular Synthesis Laboratory
- Centre of Biomedical Research (CBMR)
- Sanjay Gandhi Post-Graduate Institute of Medical Sciences Campus
- Lucknow-226 014
- India
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31
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Wu JY, Liu YC, Chao TC. From 1D Helix to 0D Loop: Nitrite Anion Induced Structural Transformation Associated with Unexpected N-Nitrosation of Amine Ligand. Inorg Chem 2014; 53:5581-8. [DOI: 10.1021/ic500306y] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Jing-Yun Wu
- Department
of Applied Chemistry, National Chi Nan University, 1 University Road, Puli, Nantou 545, Taiwan
| | - Yu-Chiao Liu
- Institute
of Chemistry, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 115, Taiwan
| | - Tzu-Ching Chao
- Department
of Applied Chemistry, National Chi Nan University, 1 University Road, Puli, Nantou 545, Taiwan
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32
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Kozai D, Kabasawa Y, Ebert M, Kiyonaka S, Otani Y, Numata T, Takahashi N, Mori Y, Ohwada T. Transnitrosylation Directs TRPA1 Selectivity in N-Nitrosamine Activators. Mol Pharmacol 2013; 85:175-85. [DOI: 10.1124/mol.113.088864] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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33
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Balakrishnan B, Nandakumar M, Seshadri PR, Mohanakrishnan AK. Dimethyl 1-(4-methyl-phen-yl)-8-(thio-phen-2-yl)-11-oxatricyclo-[6.2.1.0(2,7)]undeca-2,4,6,9-tetra-ene-9,10-dicarboxy-late. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o498-9. [PMID: 23634047 PMCID: PMC3629529 DOI: 10.1107/s1600536813005308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Accepted: 02/24/2013] [Indexed: 11/10/2022]
Abstract
The title compound, C25H20O5S, is the product of a Diels-Alder reaction. The mol-ecule consists of a fused tricyclic system containing two five-membered rings and one six-membered ring. The five-membered rings both show an envelope conformation with the O atom at the flap, whereas the six-membered ring adopts a boat conformation. The thio-phene ring is disordered over two sets of sites with an occupancy ratio of 0.53 (1):0.47 (1). The dihedral angles between the 4-methyl-phenyl ring and the major and minor components of the thio-phene ring are 66.3 (1) and 67.9 (1)°, respectively, while the dihedral angle between the disordered thio-phenyl components is 3.1 (1)°. The mean plane of the tricyclic ring system makes dihedral angles of 35.8 (1), 30.8 (1) and 32.8 (1)°, respectively, with the 4-methyl-phenyl ring and the major and minor components of the thio-phenyl ring. In the crystal, inversion dimers are formed through pairs of C-H⋯π inter-actions. In addition, C-H⋯O inter-actions are observed.
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Affiliation(s)
- B Balakrishnan
- Department of Physics, P.T. Lee Chengalvaraya Naicker College of Engineering & Technology, Kancheepuram 631 502, India
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Balakrishnan B, Nandakumar M, Seshadri PR, Mohanakrishnan AK. Diethyl 1,8-diphenyl-11-oxatricyclo-[6.2.1.0(2,7)]undeca-2,4,6-triene-9,10-dicarboxyl-ate. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o323. [PMID: 23476521 PMCID: PMC3588525 DOI: 10.1107/s1600536813002791] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Accepted: 01/28/2013] [Indexed: 11/10/2022]
Abstract
The title compound, C28H26O5, is the Diels–Alder adduct from 1,3-diphenylbenzo[c]furan and diethyl maleate. The molecule comprises of a fused tricyclic system containing two five-membered rings, which are in envelope conformations with the O atom at the flap, and a six-membered ring adopting a boat conformation. The dihedral angle between phenyl substituents in the 1,8-positions is 55.1 (1)°. The ethyl groups are disordered over two sets of sites, with occupancy ratios of 0.648 (9):0.352 (9) and 0.816 (1):0.184 (1). In the crystal, pairs of C—H⋯π interactions link the molecules into inversion dimers.
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Affiliation(s)
- B Balakrishnan
- Department of Physics, P. T. Lee Chengalvaraya Naicker College of Engineering & Technology, Kancheepuram 631 502, India
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35
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Bhardwaj A, Huang Z, Kaur J, Yang F, Seubert JM, Knaus EE. A diazen-1-ium-1,2-diolate analog of 7-azabenzobicyclo[2.2.1]heptane: synthesis, nitric oxide and nitroxyl release, in vitro hemodynamic, and anti-hypertensive studies. Bioorg Med Chem Lett 2013; 23:2769-74. [PMID: 23541649 DOI: 10.1016/j.bmcl.2013.02.040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Accepted: 02/07/2013] [Indexed: 01/13/2023]
Abstract
1-(7-Azabenzobicyclo[2.2.1]heptane)diazen-1-ium-1,2-diolate (16) was designed with the expectation that it would act as a dual nitric oxide (NO) and nitroxyl (HNO) donor that is not carcinogenic or genotoxic. Compound 16, with a suitable half-life (17.8 min) in PBS at pH 7, released NO (19%) and HNO (22%) during a 2h incubation in PBS at pH 7. In addition, compound 16 exhibited a significant in vitro positive inotropic effect, increased the rates of contraction and relaxation, and increased coronary flow rate, but did not induce a chronotropic effect. Furthermore, compound 16 (13.7 mg kg(-1), po dose) provided a significant reduction in the blood pressure of mice up to 3h post-drug administration. All these data suggest that compound 16 constitutes an attractive 'lead-compound' that could have potential applications to treat cardiovascular disease(s) such as congestive heart failure.
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Affiliation(s)
- Atul Bhardwaj
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2E1
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36
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Makita N, Kabasawa Y, Otani Y, Firman, Sato J, Hashimoto M, Nakaya M, Nishihara H, Nangaku M, Kurose H, Ohwada T, Iiri T. Attenuated desensitization of β-adrenergic receptor by water-soluble N-nitrosamines that induce S-nitrosylation without NO release. Circ Res 2012; 112:327-34. [PMID: 23212582 DOI: 10.1161/circresaha.112.277665] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
RATIONALE The clinical problem of loss of β-adrenergic receptor (β-AR) response, both in the pathogenesis of heart failure and during therapeutic application of β-agonists, is attributable, at least in part, to desensitization, internalization, and downregulation of the receptors. In the regulation of β-AR signaling, G protein-coupled receptor kinase 2 (GRK2) primarily phosphorylates agonist-occupied β-ARs, and this modification promotes desensitization, internalization, and downregulation of β-ARs. It has been demonstrated that GRK2 is inhibited by its S-nitrosylation. However, compounds that induce S-nitrosylation, such as S-nitrosoglutathione, simultaneously generate NO, which has been demonstrated to operate for cardiovascular protection. OBJECTIVE We examine whether S-nitrosylation without NO generation inhibits desensitization of β(2)-AR by GRK2. We thus aim to synthesize compounds that specifically induce S-nitrosylation. METHODS AND RESULTS We have developed water-soluble N-nitrosamines that have S-nitrosylating activity but lack NO-generating activity. These compounds, at least partly, rescue β-AR from desensitization in HEK 293 cells expressing FLAG-tagged human β(2)-AR and in rat cardiac myocytes. They inhibit isoproterenol-dependent phosphorylation and internalization of β(2)-AR. Indeed, they nitrosylate GRK2 in vitro and in cells, and their S-nitrosylation of GRK2 likely underlies their inhibition of β(2)-AR desensitization. CONCLUSIONS Compounds that induce S-nitrosylation without NO release inhibit GRK2 and attenuate β(2)-AR desensitization. Developing water-soluble drugs that specifically induce S-nitrosylation may be a promising therapeutic strategy for heart failure.
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Affiliation(s)
- Noriko Makita
- Department of Endocrinology and Nephrology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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Jiang J, Li L, Wang M, Xia J, Wang W, Xie X. Theoretical Explanation of the Peak Splitting of Tobacco-Specific N-Nitrosamines in HPLC. B KOREAN CHEM SOC 2012. [DOI: 10.5012/bkcs.2012.33.5.1722] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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38
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Inagaki S, Murai H, Takeuchi T. Theory of electron localization and its application to blue-shifting hydrogen bonds. Phys Chem Chem Phys 2012; 14:2008-14. [DOI: 10.1039/c2cp23047j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Karaki F, Kabasawa Y, Yanagimoto T, Umeda N, Firman, Urano Y, Nagano T, Otani Y, Ohwada T. Visible-Light-Triggered Release of Nitric Oxide from N-Pyramidal Nitrosamines. Chemistry 2011; 18:1127-41. [DOI: 10.1002/chem.201101427] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Indexed: 11/10/2022]
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40
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Miró Sabaté C, Delalu H. Synthesis, Characterization, and Energetic Properties of Nitroso Compounds. Z Anorg Allg Chem 2011. [DOI: 10.1002/zaac.201100446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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41
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Voitenko ZV, Sypchenko VV, Levkov IV, Potikha LM, Kovtunenko VA, Shishkin OV, Shishkina SV. 2-Substituted-Isoindoles: A Novel Synthetic Route and a Study of the Diels–Alder and Michael Reactions. JOURNAL OF CHEMICAL RESEARCH 2011. [DOI: 10.3184/174751911x13179842027190] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A novel one-step procedure for the synthesis of 2-substituted-isoindoles and 1-aryl-2-substituted-isoindoles is described. The procedure is based on the reaction of 2-(bromomethyl)benzaldehyde or 2-(bromomethyl)benzophen-one derivatives with primary aromatic or aliphatic amines. Reactions of 1,2-diarylisoindoles with N-phenylmaleimide were studied. Refluxing the reactants in i-PrOH in the presence of triethylamine leads to the formation of Diels–Alder endo-adducts; whilst refluxing in AcOH in the presence of AcONa affords Michael adducts. The structure of the latter was confirmed by X-ray diffraction.
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Affiliation(s)
- Zoia V. Voitenko
- Kiev National Taras Shevchenko University, 64 Str Volodymyrs'ka, 01033 Kiev, Ukraine
| | | | - Igor V. Levkov
- Kiev National Taras Shevchenko University, 64 Str Volodymyrs'ka, 01033 Kiev, Ukraine
| | - Lyudmila M. Potikha
- Kiev National Taras Shevchenko University, 64 Str Volodymyrs'ka, 01033 Kiev, Ukraine
| | | | - Oleg V. Shishkin
- STC “Institute of Single Crystals” NASU, 60 Lenina ave, 61001 Kharkiv, Ukraine
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Nakagawa H. Photocontrollable nitric oxide (NO) and nitroxyl (HNO) donors and their release mechanisms. Nitric Oxide 2011; 25:195-200. [DOI: 10.1016/j.niox.2010.12.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2010] [Revised: 12/06/2010] [Accepted: 12/11/2010] [Indexed: 01/25/2023]
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43
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Ab initio and DFT conformational study on N-nitrosodiethylamine, (C2H5)2N-N=O. J Mol Model 2011; 18:339-50. [PMID: 21523530 DOI: 10.1007/s00894-011-1079-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2010] [Accepted: 03/29/2011] [Indexed: 10/18/2022]
Abstract
Ab initio (MP2) and DFT (B3LYP) calculations, using the cc-pVTZ and aug-cc-pVTZ basis sets, have been performed to characterize some stationary points on the ground state potential energy surface of the title molecules. Several properties as, for instance, relative energies, the barriers for NO rotation around the NN bond, NBO charges on O and amino N atoms, as well as the dipole moments, have been calculated and analyzed in the light of the structures found. Both computational levels here employed yield three minima, in which the C(2)NNO frame is 'planar' or 'quasi-planar'. Important correlations between NBO charges and geometric parameters, as well as between some structural features and dipole moments are also discussed. A total of 17 structures have been found for the (C(2)H(5))(2)N-N=O molecule. Two ranges of values have been obtained for the dipole moment, with the largest values occurring for the structures in which the nitrogen lone pair is parallel to the NO group π system. For instance, these two ranges are from ~4.1 to 4.5 D, and from ~1.6 to 2.1 D, at the MP2/cc-pVTZ level. These ranges are consistent with a larger and a smaller contribution of a dipolar resonance structure, respectively. As the method or basis set changes the values of the dipole moments change by at most ~0.23 D.
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44
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Ohwada T, Ishikawa S, Mine Y, Inami K, Yanagimoto T, Karaki F, Kabasawa Y, Otani Y, Mochizuki M. 7-Azabicyclo[2.2.1]heptane as a structural motif to block mutagenicity of nitrosamines. Bioorg Med Chem 2011; 19:2726-41. [DOI: 10.1016/j.bmc.2011.02.049] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Revised: 02/23/2011] [Accepted: 02/24/2011] [Indexed: 10/18/2022]
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45
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Ohwada T. Orbital phase environments and stereoselectivities. Top Curr Chem (Cham) 2011; 289:129-81. [PMID: 21279574 DOI: 10.1007/128_2008_38] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Facial selections are reviewed to propose a new theory, orbital phase environment, for stereoselectivities of organic reactions. The orbital phase environment is a generalized idea of the secondary orbital interaction between the non-reacting centers and the unsymmetrization of the orbitals at the reacting centers arising from in-phase and out-of-phase overlapping with those at the neighboring non-reacting sites. In this context, the nucleophilic addition preferentially occurs on the face of the carbonyl functionality opposite to the better electron-donating orbital at the β position. In a similar manner to the carbonyl cases, the preferred reaction faces of olefins in electrophilic addition reactions are opposite to the better electron-donating orbitals at the β positions. The orbital phase environments in Diels-Alder reactions are also reviewed.
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Affiliation(s)
- Tomohiko Ohwada
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113, Japan,
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46
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do Monte SA, Ventura E, da Costa TF, de Santana SR. Ab initio and DFT conformational study on nitrosamine (H2N–N=O) and N-Nitrosodimethylamine [(CH3)2N–N=O]. Struct Chem 2010. [DOI: 10.1007/s11224-010-9721-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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47
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Yi CS, Lee DW. Efficient Dehydrogenation of Amines and Carbonyl Compounds Catalyzed by a Tetranuclear Ruthenium-mu-Oxo-mu-Hydroxo-Hydride Complex. Organometallics 2009; 28:947-949. [PMID: 20119477 DOI: 10.1021/om8010883] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The tetranuclear ruthenium-mu-oxo-mu-hydroxo-hydride complex {[(PCy(3))(CO)RuH](4)(mu(4)-O)(mu(3)-OH)(mu(2)-OH)} (1) was found to be a highly effective catalyst for the transfer dehydrogenation of amines and carbonyl compounds. For example, the initial turnover rate of the dehydrogenation of 2-methylindoline was measured to be 1.9 s(-1) with the TON of 7950 after 1 h at 200 degrees C. The extensive H/D scrambling patterns observed from the dehydrogenation reaction of indoline-N-d(1) and indoline-alpha-d(2) suggest a monohydride mechanistic pathway with the C-H bond activation rate-limiting step.
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Affiliation(s)
- Chae S Yi
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201-1881
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49
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Besson E, Amalric J, Mehdi A, Mutin PH. Synthesis of a NO-releasing lamellar silsesquioxane by topotactic exchange of CO2 for NO. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b901671f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Peláez D, Arenas JF, Otero JC, Ávila FJ, Soto J. Photochemistry of Protonated Nitrosamine: Chemical Inertia of NH2NOH+ Versus Reactivity of NH3NO+. J Phys Chem A 2008; 112:8394-402. [DOI: 10.1021/jp803252h] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Daniel Peláez
- Department of Physical Chemistry, Faculty of Sciences, University of Málaga, E-29071 Málaga, Spain
| | - Juan F. Arenas
- Department of Physical Chemistry, Faculty of Sciences, University of Málaga, E-29071 Málaga, Spain
| | - Juan C. Otero
- Department of Physical Chemistry, Faculty of Sciences, University of Málaga, E-29071 Málaga, Spain
| | - Francisco J. Ávila
- Department of Physical Chemistry, Faculty of Sciences, University of Málaga, E-29071 Málaga, Spain
| | - Juan Soto
- Department of Physical Chemistry, Faculty of Sciences, University of Málaga, E-29071 Málaga, Spain
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