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Chen W, Chen C, Chang T, Hsieh F, Chen W, Li W. Design, synthesis, and characterization of oxadiazolopyrazine analogs with application as anticancer agents. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202100438] [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]
Affiliation(s)
- Wei‐Chia Chen
- Institute of Chemistry Academia Sinica Taipei Taiwan
- Department of Chemistry National Taiwan Normal University Taipei Taiwan
| | | | | | | | | | - Wen‐Shan Li
- Institute of Chemistry Academia Sinica Taipei Taiwan
- Department of Medicinal and Applied Chemistry, College of Life Science Kaohsiung Medical Univer‐sity Kaohsiung Taiwan
- Biomedical Translation Research Center Academia Sinica Taipei Taiwan
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Chugunova E, Akylbekov N, Dobrynin A, Burilov A, Boga C, Micheletti G, Frenna V, Mattioli EJ, Calvaresi M, Spinelli D. 4,6-Dichloro-5-Nitrobenzofuroxan: Different Polymorphisms and DFT Investigation of Its Reactivity with Nucleophiles. Int J Mol Sci 2021; 22:13460. [PMID: 34948257 PMCID: PMC8709177 DOI: 10.3390/ijms222413460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/09/2021] [Accepted: 12/12/2021] [Indexed: 11/16/2022] Open
Abstract
This research focuses on the X-ray structure of 4,6-dichloro-5-nitrobenzofuroxan 1 and of some of its amino derivatives (4a, 4e, 4g, and 4l) and on DFT calculations concerning the nucleophilic reactivity of 1. We have found that by changing the solvent used for crystallization, it is possible to obtain 4,6-dichloro-5-nitrobenzofuroxan (1) in different polymorphic structures. Moreover, the different torsional angles observed for the nitro group in 1 and in its amino derivatives (4a, 4e, 4g, and 4l) are strictly dependent on the steric hindrance of the substituent at C-4. DFT calculations on the course of the nucleophilic substitution confirm the role of the condensed furoxan ring in altering the aromaticity of the carbocyclic frame, while chlorine atoms strongly influence the dihedral angle and the rotational barrier of the nitro group. These results corroborate previous observations based on experimental kinetic data and give a deep picture of the reaction with amines, which proceeds via a "non-aromatic" nucleophilic substitution.
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Affiliation(s)
- Elena Chugunova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Akad. Arbuzov st. 8, 420088 Kazan, Russia; (A.D.); (A.B.)
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of Russian Academy of Sciences, Lobachevskogo st. 2/31, 420111 Kazan, Russia
| | - Nurgali Akylbekov
- Laboratory of Engineering Profile “Physical and Chemical Methods of Analysis”, Korkyt Ata Kyzylorda University, Aitekebie str. 29A, Kyzylorda 120014, Kazakhstan;
| | - Alexey Dobrynin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Akad. Arbuzov st. 8, 420088 Kazan, Russia; (A.D.); (A.B.)
- Institute of Radio Electronics, Photonics and Digital Technologies, Kazan National Research Technical University, 10 Karl Marx Str., 420111 Kazan, Russia
| | - Alexander Burilov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Akad. Arbuzov st. 8, 420088 Kazan, Russia; (A.D.); (A.B.)
- Laboratory of Plant Infectious Diseases, FRC Kazan Scientific Center of Russian Academy of Sciences, Lobachevskogo st. 2/31, 420111 Kazan, Russia
| | - Carla Boga
- Department of Industrial Chemistry ‘Toso Montanari’ ALMA MATER STUDIORUM, Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy;
| | - Gabriele Micheletti
- Department of Industrial Chemistry ‘Toso Montanari’ ALMA MATER STUDIORUM, Università di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy;
| | - Vincenzo Frenna
- Department STEBICEF, University of Palermo, Ed.17, Viale delle Scienze, 90128 Palermo, Italy;
| | - Edoardo Jun Mattioli
- Department of Chemistry ‘G. Ciamician’ ALMA MATER STUDIORUM, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy; (E.J.M.); (M.C.)
| | - Matteo Calvaresi
- Department of Chemistry ‘G. Ciamician’ ALMA MATER STUDIORUM, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy; (E.J.M.); (M.C.)
| | - Domenico Spinelli
- Department of Chemistry ‘G. Ciamician’ ALMA MATER STUDIORUM, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy; (E.J.M.); (M.C.)
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Boivin LP, Dupont W, Leclerc M, Gendron D. Biosourced Vanillin-Based Building Blocks for Organic Electronic Materials. J Org Chem 2021; 86:16548-16557. [PMID: 34767376 DOI: 10.1021/acs.joc.1c01869] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Forest biomass is viewed as a significant source of organic carbon and thus the ideal replacement of petroleum products. From the resources derived from biomass, lignocellulose is the most abundant biobased material on earth. One of the aromatic added value compounds obtained from the depolymerization of lignin is vanillin. Here, we report the preparation of new compounds having benzothiophene, indole, isatin, benzofuroxan, benzofurazan, benzothiadiazole, and phthalimide heteroaromatic ring structures. More precisely, our results show that vanillin can be used as a biosourced starting material for the preparation of a variety of aromatic dibrominated monomers. X-ray crystallography on single crystals was also performed to obtain meaningful information on their solid-state ordering. This work opens the way to new, sustainable, biosourced aromatic materials (small molecules or polymers) for organic electronics.
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Affiliation(s)
| | - William Dupont
- Université Laval, Département de Chimie, Québec City G1V 0A6, Canada
| | - Mario Leclerc
- Université Laval, Département de Chimie, Québec City G1V 0A6, Canada
| | - David Gendron
- Cégep de Thetford, Kemitek, Thetford Mines G6G 0A5, Canada
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Cai YM, Zhang YD, Yang L. NO donors and NO delivery methods for controlling biofilms in chronic lung infections. Appl Microbiol Biotechnol 2021; 105:3931-3954. [PMID: 33937932 PMCID: PMC8140970 DOI: 10.1007/s00253-021-11274-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/23/2021] [Accepted: 04/05/2021] [Indexed: 12/18/2022]
Abstract
Nitric oxide (NO), the highly reactive radical gas, provides an attractive strategy in the control of microbial infections. NO not only exhibits bactericidal effect at high concentrations but also prevents bacterial attachment and disperses biofilms at low, nontoxic concentrations, rendering bacteria less tolerant to antibiotic treatment. The endogenously generated NO by airway epithelium in healthy populations significantly contributes to the eradication of invading pathogens. However, this pathway is often compromised in patients suffering from chronic lung infections where biofilms dominate. Thus, exogenous supplementation of NO is suggested to improve the therapeutic outcomes of these infectious diseases. Compared to previous reviews focusing on the mechanism of NO-mediated biofilm inhibition, this review explores the applications of NO for inhibiting biofilms in chronic lung infections. It discusses how abnormal levels of NO in the airways contribute to chronic infections in cystic fibrosis (CF), chronic obstructive pulmonary disease (COPD), and primary ciliary dyskinesia (PCD) patients and why exogenous NO can be a promising antibiofilm strategy in clinical settings, as well as current and potential in vivo NO delivery methods. KEY POINTS : • The relationship between abnormal NO levels and biofilm development in lungs • The antibiofilm property of NO and current applications in lungs • Potential NO delivery methods and research directions in the future.
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Affiliation(s)
- Yu-Ming Cai
- Institute for Life Sciences, University of Southampton, Southampton, SO17 1BJ, UK.
| | - Ying-Dan Zhang
- School of Medicine, Southern University of Science and Technology, Shenzhen, 518000, China
| | - Liang Yang
- School of Medicine, Southern University of Science and Technology, Shenzhen, 518000, China.
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5
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Ramazani A, Karimi M, Hosseinzadeh Z, Rezayati S, Hanifehpour Y, Joo SW. Syntheses and Antitumor Properties of Furoxan Derivatives. CURR ORG CHEM 2021. [DOI: 10.2174/1385272825666210208183751] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Cancer is the second leading cause of death in Iran, next to heart disease. Current
therapy suffers from the major limitations of side effects and drug resistance, so the characterization
of new structures that can be power-selective and less-toxic anticancer agents is the
main challenge to medicinal chemistry research. Furoxan (1,2,5-oxadiazole-2-oxide) is a crucial
compound with many medicinal and pharmaceutical properties. The most important aspect
of furoxan is the nitric oxide (NO) molecule. One of the most essential furoxan derivatives,
which could be utilized in medicinal goals and pharmaceutical affairs, is benzofuroxan.
Furoxan could be described as a NO-donating compound in a variety of reactions, which
could also appear as hybridised with different medicinal compounds. This review article presents
a summary of syntheses and antitumor properties of furoxan derivatives as possible
chemotherapy agents for cancer. Furoxan can inhibit tumor growth in vivo without any side
effects in normal cells. Furthermore, due to NO-releasing in high levels in vivo and a wide
range of anticancer compounds, furoxan derivatives and especially its hybridised compounds could be considered as
antitumor, cytotoxic and apoptosis compounds to be applied in the human body.
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Affiliation(s)
- Ali Ramazani
- Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan 45371-38791, Iran
| | - Masoud Karimi
- Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan 45371-38791, Iran
| | - Zahra Hosseinzadeh
- Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan 45371-38791, Iran
| | - Sobhan Rezayati
- Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan 45371-38791, Iran
| | - Younes Hanifehpour
- School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Korea
| | - Sang Woo Joo
- School of Mechanical Engineering, Yeungnam University, Gyeongsan 38541, Korea
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Abstract
4,6-Dinitro-7-(thiazol-2-ylamino)benzo[c][1,2,5]oxadiazole 1-oxide was synthesized by a SNAr reaction between 7-chloro-4,6-dinitrobenzofuroxan and 2-aminothiazole. The structure of the newly synthesized compound (45% yield) was elucidated based on 1H-NMR, 13C-NMR, NOESY-1D, ESI-MS, UV-Vis, and FT-IR techniques.
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Alenzi RA, El Guesmi N, Shaaban MR, Asghar BH, Farghaly TA. Assessing the nucleophilic character of 2-amino-4-arylthiazoles through coupling with 4,6-dinitrobenzofuroxan: Experimental and theoretical approaches based on structure-reactivity relationships. JOURNAL OF SAUDI CHEMICAL SOCIETY 2020. [DOI: 10.1016/j.jscs.2020.08.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dey S, Panda S, Lahiri GK. Ruthenium-Hydride Assisted Remarkable Diversity Towards Non-Spectator Feature of Benzodifuroxan. Chem Asian J 2020; 15:3281-3295. [PMID: 32779852 DOI: 10.1002/asia.202000849] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/09/2020] [Indexed: 11/07/2022]
Abstract
The present article demonstrates that ruthenium-hydride [RuII (H)(Cl)(CO)(PPh3 )3 ] mediated diverse functionalization modes of benzodifuroxan (BDF) encompassing two furoxan rings. Hydride transfer from the metal precursor facilitated multiple cascade reactions involving unsymmetrical cleavage of the furoxan rings of BDF, leading to the one-pot formation of a series of ruthenium (II) coordinated functionalized ligands exhibiting bidentate κ2 -N,O, κ2 -N,N' and bis-bidentate μ-bis(κ2 -N,O) modes. Further, a moderately stable intermediate species was also encountered in the reaction sequence in which the transformed deoxygenated ligand coordinated to the metal ion via the rarely manifested furazan ring (κ2 -N,N'' mode). The products were authenticated by their single-crystal X-ray structures and other spectroscopic/analytical techniques. Redox non-innocence of the functionalized ligands in the complexes was illustrated by spectroelectrochemistry (cyclic voltammmetry, UV-Vis. and EPR) in conjunction with DFT/TD-DFT calculations. Mechanistic outline for the facile ring opening processes of BDF including interconversions of complexes (e. g. reductive ring opening) were also addressed.
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Affiliation(s)
- Sanchaita Dey
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Sanjib Panda
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Goutam Kumar Lahiri
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
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10
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Dual-targeting Rutaecarpine-NO donor hybrids as novel anti-hypertensive agents by promoting release of CGRP. Eur J Med Chem 2019; 168:146-153. [DOI: 10.1016/j.ejmech.2019.02.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 01/23/2019] [Accepted: 02/10/2019] [Indexed: 01/16/2023]
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Micheletti G, Boga C, Cino S, Bordoni S, Chugunova E. Highly conjugated architectures and labile reaction intermediates from coupling between 10π electron-deficient heteroaromatics and sym-trihydroxy- or triamino-benzene derivatives. RSC Adv 2018; 8:41663-41674. [PMID: 35559277 PMCID: PMC9091866 DOI: 10.1039/c8ra09460h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 12/06/2018] [Indexed: 11/30/2022] Open
Abstract
The C-C coupling reaction between neutral aromatic carbon nucleophiles such as 1,3,5-triamino- and 1,3,5-trihydroxy-benzene derivatives and 7-chloro-4,6-dinitrobenzofuroxan (Cl-DNBF) or 7-chloro-4,6-dinitrobenzofurazan (Cl-DNBZ) gave in high yield the corresponding conjugated structures, which are of potential interest in the materials field. When chlorine is absent on the electrophile, as in 4,6-dinitrobenzofurazan (DNBZ), the reaction with 1,3,5-triaminobenzene derivatives produces Wheland-Meisenheimer (WM) zwitterionic intermediates, intercepted and fully characterized via NMR at low temperature, whereas stable Meisenheimer complexes (M) were isolated in the reaction of phloroglucinol with 1,3,5-trimethoxybenzene. The latter also gave exclusively M complexes when reacted with 4,6-dinitrobenzofuroxan (DNBF), or 4,6-dinitrotetrazolopyridine (DNTP). The detection of WM or M intermediates can be rationalized by invoking the substituent stabilization ability of the positive charge in WM intermediates, on going from neutral carbon nucleophiles 1,3,5-triaminobenzenes to 1,3,5-trihydroxybenzene derivatives. Furthermore, variable-temperature NMR experiments on the M intermediates gave insights into the rotational barrier about the newly formed C-C bond.
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Affiliation(s)
- Gabriele Micheletti
- Department of Industrial Chemistry 'Toso Montanari', Alma Mater Studiorum Università di Bologna Viale Del Risorgimento, 4 40136 Bologna Italy
| | - Carla Boga
- Department of Industrial Chemistry 'Toso Montanari', Alma Mater Studiorum Università di Bologna Viale Del Risorgimento, 4 40136 Bologna Italy
| | - Silvia Cino
- Department of Industrial Chemistry 'Toso Montanari', Alma Mater Studiorum Università di Bologna Viale Del Risorgimento, 4 40136 Bologna Italy
| | - Silvia Bordoni
- Department of Industrial Chemistry 'Toso Montanari', Alma Mater Studiorum Università di Bologna Viale Del Risorgimento, 4 40136 Bologna Italy
| | - Elena Chugunova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS Akad. Arbuzovst. 8 Kazan Tatarstan 420088 Russia
- Kazan Federal University 18 Kremlyovskaya St. Kazan Tatarstan 420008 Russia
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Galkina IV, Takhautdinova GL, Ivshin KA, Yusupova LM, Krasnyuk II, Egorova SN, Shulaeva MP, Pozdeev OK, Kataeva ON, Galkin VI. Synthesis, Structure, and Antimicrobial Activity of the Reaction Products of Chloronitro-Substituted Benzofurazanes and Benzofuroxanes with Morpholine. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s107036321712009x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Synthesis of imidazo[4,5-e]benzo[1,2-c;3,4-c´]difuroxanes. Russ Chem Bull 2017. [DOI: 10.1007/s11172-017-1880-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Leyva E, Leyva-Ramos S, Jiménez-Cataño R, de Luna-Méndez TA, Cárdenas-Chaparro A. One-pot methodology for conversion of o-halogen nitrobenzenes to benzofuroxans. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2016.1276932] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Elisa Leyva
- Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
| | - Socorro Leyva-Ramos
- Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
| | - Rogelio Jiménez-Cataño
- Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
| | - Telma A. de Luna-Méndez
- Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
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Chugunova EA, Akylbekov NI, Voloshina AD, Kulik NV, Zobov VV, Babaev VM, Gavrilov NV, Burilov AR. Synthesis and investigation of antimicrobial activity of compounds derived from benzo[C][1,2,5]oxadiazole-1-oxides and phenolates. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1213295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Elena A. Chugunova
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russia
| | | | - Alexandra D. Voloshina
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russia
| | - Natalia V. Kulik
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russia
| | - Vladimir V. Zobov
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russia
| | - Vasily M. Babaev
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russia
| | | | - Alexander R. Burilov
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Kazan, Russia
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Yadav MR, Tamboli RS, Mande HM, Rabari HA, Giridhar R. Base catalyzed novel rearrangement of steroidal [3,4- c ]furoxans. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.04.096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Chugunova E, Boga C, Sazykin I, Cino S, Micheletti G, Mazzanti A, Sazykina M, Burilov A, Khmelevtsova L, Kostina N. Synthesis and antimicrobial activity of novel structural hybrids of benzofuroxan and benzothiazole derivatives. Eur J Med Chem 2015; 93:349-59. [PMID: 25707015 DOI: 10.1016/j.ejmech.2015.02.023] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 02/12/2015] [Accepted: 02/15/2015] [Indexed: 11/16/2022]
Abstract
New compounds containing both benzofuroxan and benzothiazole scaffolds were synthesized through electrophile/nucleophile combination of nitrobenzofuroxan derivatives and 2-mercapto- or 2-aminobenzothiazole derivatives and their biological effect on the natural strain Vibrio genus and different bacterial lux-biosensors was studied. Among all the compounds synthesized, that obtained from 2-mercaptobenzothiazole and 7-chloro-4,6-dinitrobenzofuroxan was toxic for bacterial cells, and also able to activated the 1st type Quorum Sensing system. The reaction between 7-chloro-4,6-dinitrobenzofuroxan and 2-aminobenzothiazole derivatives gave two products, one bearing the benzofuroxan moiety linked to the exocyclic amino nitrogen, and the second derived from the attack of two molecules of electrophile to both the nitrogen atoms of the benzothiazole reagent. Their relative ratio is modifiable by tuning the reagents ratio and the reaction time.
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Affiliation(s)
- Elena Chugunova
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Akad. Arbuzov st. 8, Kazan, Tatarstan 420088 Russia.
| | - Carla Boga
- Department of Industrial Chemistry "Toso Montanari", Alma Mater Studiorum-University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy.
| | - Ivan Sazykin
- The Research Institute of Biology, Southern Federal University (SFedU), 194/1 Stachki Ave., 344090 Rostov-on-Don, Russia
| | - Silvia Cino
- Department of Industrial Chemistry "Toso Montanari", Alma Mater Studiorum-University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Gabriele Micheletti
- Department of Industrial Chemistry "Toso Montanari", Alma Mater Studiorum-University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Andrea Mazzanti
- Department of Industrial Chemistry "Toso Montanari", Alma Mater Studiorum-University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Marina Sazykina
- The Research Institute of Biology, Southern Federal University (SFedU), 194/1 Stachki Ave., 344090 Rostov-on-Don, Russia
| | - Alexander Burilov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Akad. Arbuzov st. 8, Kazan, Tatarstan 420088 Russia
| | - Ludmila Khmelevtsova
- The Research Institute of Biology, Southern Federal University (SFedU), 194/1 Stachki Ave., 344090 Rostov-on-Don, Russia
| | - Natalia Kostina
- The Research Institute of Biology, Southern Federal University (SFedU), 194/1 Stachki Ave., 344090 Rostov-on-Don, Russia
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The study of NADPH-dependent flavoenzyme-catalyzed reduction of benzo[1,2-c]1,2,5-oxadiazole N-oxides (benzofuroxans). Int J Mol Sci 2014; 15:23307-31. [PMID: 25517035 PMCID: PMC4284768 DOI: 10.3390/ijms151223307] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 12/03/2014] [Accepted: 12/04/2014] [Indexed: 11/17/2022] Open
Abstract
UNLABELLED The enzymatic reactivity of a series of benzo[1,2-c]1,2,5-oxadiazole N-oxides (benzofuroxans; BFXs) towards mammalian single-electron transferring NADPH:cytochrome P-450 reductase (P-450R) and two-electron (hydride) transferring NAD(P)H quinone oxidoreductase (NQO1) was examined in this work. Since the =N+ (→O)O- moiety of furoxan fragments of BFXs bears some similarity to the aromatic nitro-group, the reactivity of BFXs was compared to that of nitro-aromatic compounds (NACs) whose reduction mechanisms by these and other related flavoenzymes have been extensively investigated. The reduction of BFXs by both P-450R and NQO1 was accompanied by O2 uptake, which was much lower than the NADPH oxidation rate; except for annelated BFXs, whose reduction was followed by the production of peroxide. In order to analyze the possible quantitative structure-activity relationships (QSARs) of the enzymatic reactivity of the compounds, their electron-accepting potency and other reactivity indices were assessed by quantum mechanical methods. In P-450R-catalyzed reactions, both BFXs and NACs showed the same reactivity dependence on their electron-accepting potency which might be consistent with an "outer sphere" electron transfer mechanism. In NQO1-catalyzed two-electron (hydride) transferring reactions, BFXs acted as more efficient substrates than NACs, and the reduction efficacy of BFXs by NQO1 was in general higher than by single-electron transferring P-450R. In NQO1-catalyzed reactions, QSARs obtained showed that the reduction efficacy of BFXs, as well as that of NACs, was determined by their electron-accepting potency and could be influenced by their binding mode in the active center of NQO1 and by their global softness as their electronic characteristic. The reductive conversion of benzofuroxan by both flavoenzymes yielded the same reduction product of benzofuroxan, 2,3-diaminophenazine, with the formation of o-benzoquinone dioxime as a putative primary reductive intermediate, which undergoes a further reduction process. Overall, the data obtained show that by contrast to NACs, the flavoenzyme-catalyzed reduction of BFXs is unlikely to initiate their redox-cycling, which may argue for a minor role of the redox-cycling-type action in the cytotoxicity of BFXs.
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Wang L, Zhang YY, Wang L, Liu FY, Cao LL, Yang J, Qiao C, Ye Y. Benzofurazan derivatives as antifungal agents against phytopathogenic fungi. Eur J Med Chem 2014; 80:535-42. [PMID: 24813881 DOI: 10.1016/j.ejmech.2014.04.058] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 04/17/2014] [Accepted: 04/21/2014] [Indexed: 10/25/2022]
Abstract
A series of benzofurazan derivatives were prepared and evaluated for their biological activities against four important phytopathogenic fungi, namely, Rhizoctonia solani, Sclerotinia sclerotiorum, Fusarium graminearum and Phytophthora capsici, using the mycelium growth inhibition method. The structures of these compounds were characterized by (1)H NMR, (13)C NMR, and HRMS. N-(3-chloro-4-fluorophenyl)-7-nitrobenzo[c][1,2,5]oxadiazol-4-amine (A3) displayed the maximum antifungal activity against R. solani (IC50 = 1.91 μg/mL), which is close to that of the positive control Carbendazim (IC50 = 1.42 μg/mL). For other benzofurazan derivatives with nitro group at R(4) position (A series), 9 out of 30 compounds exhibited high antifungal effect against strain R. solani, with IC50 values less than 5 μg/mL. Most of the derivatives with substituents at R(2) and R(3) positions (B series) displayed moderate growth inhibition against S. sclerotiorum (IC50 < 25 μg/mL). Also, several benzofuran derivatives with nitro group at R(4) position and another conjugated aromatic ring at the R(1) position of the phenyl ring displayed high antifungal capability against strain R. solani. Compounds with substituents at R(2) and R(3) position had moderate efficacy against strain S. sclerotiorum.
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Affiliation(s)
- Lili Wang
- College of Pharmaceutical Science, Soochow University, Suzhou 215123, Jiangsu, PR China
| | - Ying-Ying Zhang
- College of Plant Protection, Jiangsu Key Laboratory of Pesticide Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Lei Wang
- School of Biology & Basic Medical Sciences, Soochow University, Suzhou 215123, Jiangsu, PR China
| | - Feng-you Liu
- College of Pharmaceutical Science, Soochow University, Suzhou 215123, Jiangsu, PR China
| | - Ling-Ling Cao
- College of Plant Protection, Jiangsu Key Laboratory of Pesticide Science, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Jing Yang
- College of Pharmaceutical Science, Soochow University, Suzhou 215123, Jiangsu, PR China
| | - Chunhua Qiao
- College of Pharmaceutical Science, Soochow University, Suzhou 215123, Jiangsu, PR China.
| | - Yonghao Ye
- College of Plant Protection, Jiangsu Key Laboratory of Pesticide Science, Nanjing Agricultural University, Nanjing 210095, PR China.
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21
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Sartini S, Cosconati S, Marinelli L, Barresi E, Di Maro S, Simorini F, Taliani S, Salerno S, Marini AM, Da Settimo F, Novellino E, La Motta C. Benzofuroxane Derivatives as Multi-Effective Agents for the Treatment of Cardiovascular Diabetic Complications. Synthesis, Functional Evaluation, and Molecular Modeling Studies. J Med Chem 2012; 55:10523-31. [DOI: 10.1021/jm301124s] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Stefania Sartini
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, 56126 Pisa,
Italy
| | - Sandro Cosconati
- Dipartimento Scienze e Tecnologie
Ambientali, Biologiche e Farmaceutiche, Seconda Università di Napoli, Via Vivaldi 43, 81100 Caserta, Italy
| | - Luciana Marinelli
- Dipartimento di Chimica
Farmaceutica
e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano, 49, 80131 Napoli, Italy
| | - Elisabetta Barresi
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, 56126 Pisa,
Italy
| | - Salvatore Di Maro
- Dipartimento di Chimica
Farmaceutica
e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano, 49, 80131 Napoli, Italy
| | - Francesca Simorini
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, 56126 Pisa,
Italy
| | - Sabrina Taliani
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, 56126 Pisa,
Italy
| | - Silvia Salerno
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, 56126 Pisa,
Italy
| | - Anna Maria Marini
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, 56126 Pisa,
Italy
| | - Federico Da Settimo
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, 56126 Pisa,
Italy
| | - Ettore Novellino
- Dipartimento di Chimica
Farmaceutica
e Tossicologica, Università di Napoli “Federico II”, Via D. Montesano, 49, 80131 Napoli, Italy
| | - Concettina La Motta
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno 6, 56126 Pisa,
Italy
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22
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Ligand-based design, in silico ADME-Tox filtering, synthesis and biological evaluation to discover new soluble 1,4-DHP-based CFTR activators. Eur J Med Chem 2012; 55:188-94. [DOI: 10.1016/j.ejmech.2012.07.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 07/11/2012] [Accepted: 07/12/2012] [Indexed: 11/19/2022]
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23
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Zelenov VP, Voronin AA, Churakov AM, Klenov MS, Strelenko YA, Tartakovsky VA. Generation of oxodiazonium ions 3. Synthesis of [1,2,5]oxadiazolo[3,4-c]cinnoline-1,5-dioxides. Russ Chem Bull 2012. [DOI: 10.1007/s11172-011-0311-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Galkina IV, Tudrii EV, Berdnikov EA, Yusupova LM, Levinson FS, Krivolapov DB, Litvinov IA, Cherkasov RA, Galkin VI. Reactions of 5,7-Dichloro-4,6-dinitrobenzofuroxane and -furazane with Triphenylphosphine. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2012. [DOI: 10.1134/s1070428012050156] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Schiefer IT, VandeVrede L, Fa' M, Arancio O, Thatcher GRJ. Furoxans (1,2,5-oxadiazole-N-oxides) as novel NO mimetic neuroprotective and procognitive agents. J Med Chem 2012; 55:3076-87. [PMID: 22429006 DOI: 10.1021/jm201504s] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Furoxans (1,2,5-oxadiazole-N-oxides) are thiol-bioactivated NO-mimetics that have not hitherto been studied in the CNS. Incorporation of varied substituents adjacent to the furoxan ring system led to modulation of reactivity toward bioactivation, studied by HPLC-MS/MS analysis of reaction products. Attenuated reactivity unmasked the cytoprotective actions of NO in contrast to the cytotoxic actions of higher NO fluxes reported previously for furoxans. Neuroprotection was observed in primary neuronal cell cultures following oxygen glucose deprivation (OGD). Neuroprotective activity was observed to correlate with thiol-dependent bioactivation to produce NO(2)(-), but not with depletion of free thiol itself. Neuroprotection was abrogated upon cotreatment with a sGC inhibitor, ODQ, thus supporting activation of the NO/sGC/CREB signaling cascade by furoxans. Long-term potentiation (LTP), essential for learning and memory, has been shown to be potentiated by NO signaling, therefore, a peptidomimetic furoxan was tested in hippocampal slices treated with oligomeric amyloid-β peptide (Aβ) and was shown to restore synaptic function. The novel observation of furoxan activity of potential therapeutic use in the CNS warrants further studies.
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Affiliation(s)
- Isaac T Schiefer
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, (MC 781), 833 South Wood Street, Chicago, Illinois 60612-7231, USA
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26
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Chen L, Qiu W, Tang J, Wang ZF, He SY. Synthesis and bioactivity of novel nitric oxide-releasing ursolic acid derivatives. CHINESE CHEM LETT 2011. [DOI: 10.1016/j.cclet.2010.10.036] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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27
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Synthesis and biological evaluation of nitric oxide-releasing matrine derivatives as anticancer agents. CHINESE CHEM LETT 2010. [DOI: 10.1016/j.cclet.2009.11.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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28
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de Carvalho PS, Maróstica M, Gambero A, Pedrazzoli J. Synthesis and pharmacological characterization of a novel nitric oxide-releasing diclofenac derivative containing a benzofuroxan moiety. Eur J Med Chem 2010; 45:2489-93. [PMID: 20227145 DOI: 10.1016/j.ejmech.2010.02.034] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2009] [Revised: 02/12/2010] [Accepted: 02/15/2010] [Indexed: 11/27/2022]
Abstract
1-oxy-benzo[1,2,5]oxadiazol-5-ylmethyl [2-(2,6-dichloro-phenylamino)-phenyl]-acetate, a new diclofenac derivative bearing a benzofuroxan heterocyclic moiety in its structure, was prepared by the reaction of sodium diclofenac and 5-bromomethyl-benzo[1,2,5]oxadiazole 1-oxide. Pharmacological characterization of this modified diclofenac maintained the anti-inflammatory activity similar to its parent compound assayed in vitro and in vivo. The ulcerogenic properties of native diclofenac were not observed with this modified compound, despite the inhibition of prostaglandin E2 gastric content. The better gastric tolerability seems to be related to nitric oxide release ability.
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Affiliation(s)
- Paulo Sérgio de Carvalho
- Clinical Pharmacology and Gastroenterology Unit, São Francisco University Medical School, Av. São Francisco de Assis 218, 12916-900 Bragança Paulista, SP, Brazil
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29
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Li WS, More SV, Wang CH, Jen YC, Yao CF, Wang TF, Hung CC, Jao SC. Synthesis and structure–activity relationships of novel furazan-3,4-diamide analogs as potent anti-cancer agents. Bioorg Med Chem Lett 2010; 20:1148-52. [DOI: 10.1016/j.bmcl.2009.12.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2009] [Revised: 12/01/2009] [Accepted: 12/03/2009] [Indexed: 11/29/2022]
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30
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Chen L, Zhang Y, Kong X, Lan E, Huang Z, Peng S, Kaufman DL, Tian J. Design, synthesis, and antihepatocellular carcinoma activity of nitric oxide releasing derivatives of oleanolic acid. J Med Chem 2008; 51:4834-8. [PMID: 18598019 DOI: 10.1021/jm800167u] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Novel furoxan-based nitric oxide (NO) releasing derivatives of oleanolic acid (OA) were synthesized for potential therapy of liver cancers. Six compounds produced high levels of NO in human hepatocellular carcinoma (HCC) cells and exhibited strong cytotoxicity selectively against HCC in vitro. Treatment with 8b or 16b significantly inhibited the growth of HCC tumors in vivo. These data provide a proof-in-principle that furoxan/OA hybrids may be used for therapeutic intervention of human liver cancers.
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Affiliation(s)
- Li Chen
- Department of Phytochemistry, Center of Drug Discovery, China Pharmaceutical University, Nanjing 210009, PR China
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31
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Cerecetto H, González M. Benzofuroxan and Furoxan. Chemistry and Biology. TOPICS IN HETEROCYCLIC CHEMISTRY 2007. [DOI: 10.1007/7081_2007_064] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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32
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Fang L, Zhang Y, Lehmann J, Wang Y, Ji H, Ding D. Design and synthesis of furoxan-based nitric oxide-releasing glucocorticoid derivatives with potent anti-inflammatory activity and improved safety. Bioorg Med Chem Lett 2006; 17:1062-6. [PMID: 17129724 DOI: 10.1016/j.bmcl.2006.11.018] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2006] [Revised: 11/07/2006] [Accepted: 11/08/2006] [Indexed: 11/16/2022]
Abstract
A series of furoxan-based nitric oxide-releasing glucocorticoid derivatives was synthesized. The pharmacological assays indicated that three compounds, including I(4), I(5), and I(6), had anti-inflammatory activity. Furthermore compared with the leading compound hydrocortisone the safety of I(6) was greatly improved. Due to releasing NO in vivo the side effects of glucocorticoids, including hypertension and osteoporosis, were effectively avoided.
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Affiliation(s)
- Lei Fang
- Center of Drug Discovery, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China
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33
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Aguirre G, Boiani L, Cerecetto H, Di Maio R, González M, Porcal W, Denicola A, Möller M, Thomson L, Tórtora V. Benzo[1,2-c]1,2,5-oxadiazole N-oxide derivatives as potential antitrypanosomal drugs. Part 3: Substituents-clustering methodology in the search for new active compounds. Bioorg Med Chem 2005; 13:6324-35. [PMID: 16115774 DOI: 10.1016/j.bmc.2005.05.020] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2005] [Revised: 05/09/2005] [Accepted: 05/09/2005] [Indexed: 10/25/2022]
Abstract
The results of a study on the use of Hansch's series design, cluster methodology, for the generation of new benzo[1,2-c]1,2,5-oxadiazole N-oxide derivatives as antitrypanosomal compounds are described. In vitro activity of these compounds was tested against Tulahuen 2 strain of Trypanosoma cruzi. Clearly, the Hansch methodology allowed identifying two cluster-substituents suitable for further structural modifications. The most effective drugs, derivatives 11, 18, and 21, with 50% inhibitory concentration (IC(50)) of the same order as that of the reference drug, represent an excellent structural point of chemical modifications for the design of future drugs. Preliminary results from the study of the mechanism of action of these benzofuroxans point to perturbation of the mitochondrial electron chain, inhibiting parasite respiration.
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Affiliation(s)
- Gabriela Aguirre
- Departamento de Química Orgánica, Facultad de Química-Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
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34
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Moharram S, Zhou A, Wiebe LI, Knaus EE. Design and Synthesis of 3‘- and 5‘-O-(3-Benzenesulfonylfuroxan-4-yl)-2‘-deoxyuridines: Biological Evaluation as Hybrid Nitric Oxide Donor−Nucleoside Anticancer Agents. J Med Chem 2004; 47:1840-6. [PMID: 15027876 DOI: 10.1021/jm030544m] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A group of 3'-O- and 5'-O-(3-benzenesulfonylfuroxan-4-yl)-2'-deoxyuridines possessing a variety of substituents (H, Me, I, F, CF(3)) at the C-5 position of the nucleoside moiety were synthesized for evaluation as hybrid anticancer agents that have the ability to simultaneously release cytotoxic nitric oxide (*NO). Incubation of these nitric oxide donor-nucleoside conjugates in the presence of 18 mM L-cysteine released a high percentage of *NO (21-48% at 1 h; 37-86% at 16 h). The release of *NO in the absence of the thiol cofactor was negligible. These hybrid *NO donor-nucleosides exhibited high cellular toxicity (CC(50) = 10(-6)-10(-8) M range) against a battery of tumor cell lines (143B-LTK, 143B, EMT-6, KBALB-STK, and KBALB) and normal human fibroblasts (Hs578Bst). No differences in cytotoxicity between nontransfected (143B, KBALB) and the corresponding transfected (143B-LTK, KBALB-STK) cancer cell lines possessing the herpes simplex virus type 1 (HSV-1) thymidine kinase gene (TK(+)) were observed, indicating that expression of the viral TK enzyme did not provide a gene therapeutic effect.
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Affiliation(s)
- Sameh Moharram
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, T6G 2N8 Canada
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35
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Velazquez C, Vo D, Knaus EE. Syntheses, calcium channel modulation effects, and nitric oxide release studies ofO2-alkyl-1-(pyrrolidin-1-yl) diazen-1-ium-1,2-diolate 4-aryl(heteroaryl)-1,4-dihydro-2,6-dimethyl-3-nitropyridine-5-carboxylates. Drug Dev Res 2003. [DOI: 10.1002/ddr.10285] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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36
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Synthesis of novel fluorobenzofuroxans by oxidation of anilines and thermal cyclization of arylazides. J Fluor Chem 2003. [DOI: 10.1016/s0022-1139(03)00011-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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37
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Vo D, Nguyen JT, McEwen CA, Shan R, Knaus EE. Syntheses, calcium channel agonist-antagonist modulation effects, and nitric oxide release studies of [3-(Benzenesulfonyl)furoxan-4-yloxy]alkyl 1,4-Dihydro-2,6-dimethyl-5-nitro-4-(2-trifluoromethylphenyl, benzofurazan-4-yl, 2-, 3-, or 4-pyridyl)-3-pyridinecarboxylates. Drug Dev Res 2002. [DOI: 10.1002/ddr.10050] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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38
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Wang PG, Xian M, Tang X, Wu X, Wen Z, Cai T, Janczuk AJ. Nitric oxide donors: chemical activities and biological applications. Chem Rev 2002; 102:1091-134. [PMID: 11942788 DOI: 10.1021/cr000040l] [Citation(s) in RCA: 972] [Impact Index Per Article: 44.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Peng George Wang
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, USA.
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39
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Medana C, Visentin S, Grosa G, Fruttero R, Gasco A. Nitroanilines are the reduction products of benzofuroxan system by oxyhemoglobin (HbO2 2+). FARMACO (SOCIETA CHIMICA ITALIANA : 1989) 2001; 56:799-802. [PMID: 11718274 DOI: 10.1016/s0014-827x(01)01139-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Benzofuroxans are interesting compounds which display several biochemical and pharmacological properties. Recent studies from our laboratory demonstrate that they are reduced by ferrous salts at room temperature and that the principal reaction products are o-nitroanilines. This paper shows that simple benzofuroxan derivatives are also able to oxidise HbO2 2+ to methemoglobin (MetHb3+) (UV detection) and to form o-nitroanilines (HPLC detection). From a toxicological point of view this reaction is interesting, since it indicates that the blood is a site for metabolism of these compounds with consequent methemoglobinemia and formation of toxic compounds.
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Affiliation(s)
- C Medana
- Dipartimento di Scienza e Tecnologia del Farmaco, Turin, Italy
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40
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Tu Y, Budelmann BU. Effects of nitric oxide donors on the afferent resting activity in the cephalopod statocyst. Brain Res 2000; 865:211-20. [PMID: 10821923 DOI: 10.1016/s0006-8993(00)02222-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The effects of bath applications of the nitric oxide (NO) donors sodium nitroprusside (SNP), diethylamine sodium (DEA), 3-morpholinosydnonimine (SIN-1), and S-nitroso-N-acetyl-penicillamine (SNAP) on the resting activity (RA) of afferent crista fibers were studied in isolated statocysts of the cuttlefish Sepia officinalis. The NO donors had three different effects: inhibition, excitation, and excitation followed by an inhibition. The SNAP analog N-acetyl-DL-penicillamine (xSNAP; with no NO moiety) had no effect. When the preparation was pre-treated with the NO synthase inhibitor N(G)-nitric-L-arginine methyl ester HCl (L-NAME), the NO donors were still effective. When the preparation was pre-treated with the guanylate cyclase inhibitors methylene blue (M-BLU) or cystamine (CYS), NO donors had only excitatory effects, whereas their effects were inhibitory only when pre-treatment was with the adenylate cyclase inhibitors nicotinic acid (NIC-A), 2',3'-dideoxyadenosine (DDA), or MDL-12330A. When pre-treatment was with a guanylate and an adenylate cyclase inhibitor combined, NO donors had no effect; in that situation, the RA of the afferent fibers remained and the preparation still responded to bath applications of GABA. Selective experiments with statocysts from the squid Sepioteuthis lessoniana and the octopod Octopus vulgaris gave comparable results. These data indicate that in cephalopod statocysts an inhibitory NO-cGMP and an excitatory NO-cAMP signal transduction pathway exist, that these two pathways are the key pathways for the action of NO, and that they have only modulatory effects on, and are not essential for the generation of, the RA.
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Affiliation(s)
- Y Tu
- Marine Biomedical Institute, University of Texas Medical Branch, 301 University Boulevard, 77555-1163, Galveston, TX, USA
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41
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Di Stilo A, Medana C, Ferrarotti B, Gasco AL, Ghigo D, Bosia A, Martorana PA, Gasco A. In vitro and in vivo vasodilating activity of nitroso derivatives gem -substituted with electron-withdrawing groups. Pharmacol Res 2000; 41:469-74. [PMID: 10704272 DOI: 10.1006/phrs.1999.0606] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A series of nitroso compounds gem -substituted with electron-withdrawing groups (R(2)C(X)NO, R=alkyl, X=NO(2), CN, Cl), were studied for their in vitro and in vivo vasodilating properties as well as for their ability to activate soluble guanylate cyclase (sGC) in RFL-6 cells. All the compounds, with the sole exception of chloro derivative, display good in vitro vasodilating action and are able to increase the basal level of cGMP. Their potencies as vasodilators decrease in the presence of oxyhaemoglobin, a scavenger of nitric oxide (NO). The haemodynamic profile of the most interesting compounds, assessed in anaesthetized pigs, is also in line with a release of NO from these compounds.
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Affiliation(s)
- A Di Stilo
- Dipartimento di Scienza e Tecnologia del Farmaco, Universita di Torino, via P. Giuria 9, Torino, 10125, Italy
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