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Selladurai V, Karuthapandi S. Competing electrophilic substitution and oxidative polymerization of arylamines with selenium dioxide. Beilstein J Org Chem 2024; 20:1221-1235. [PMID: 38887588 PMCID: PMC11181186 DOI: 10.3762/bjoc.20.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 05/16/2024] [Indexed: 06/20/2024] Open
Abstract
This article describes the detailed analysis of the reaction between arylamines, such as aniline, o-anisidine, and methyl anthranilate, with selenium dioxide in acetonitrile. A systematic analysis of the reaction products with the help of 77Se NMR and single-crystal X-ray crystallography revealed that the reaction progress follows three major reaction pathways, electrophilic selenation, oxidative polymerization, and solvent oxidation. For aniline and o-anisidine, predominant oxidative polymerization occurred, leading to the formation of the respective polyaniline polymers as major products. For methyl anthranilate, the oxidative polymerization was suppressed due to the delocalization of amine lone pair electrons over the adjacent carboxylate function, which prompted the selenation pathway, leading to the formation of two of the isomeric diorganyl selenides of methyl anthranilate. The diaryl selenides were structurally characterized using single-crystal X-ray diffraction. Density functional theory calculations suggest that the highest occupied molecular orbital of methyl anthranilate was deeply buried, which suppressed the oxidative polymerization pathway. Due to solvent oxidation, oxamide formation was also noticed to a considerable extent. This study provides that utmost care must be exercised while using SeO2 as an electrophile source in aromatic electrophilic substitution reactions.
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Affiliation(s)
- Vishnu Selladurai
- Department of Chemistry, School of Advanced Sciences, VIT-AP University, Amaravati-522237, Andhra Pradesh, India
| | - Selvakumar Karuthapandi
- Department of Chemistry, School of Advanced Sciences, VIT-AP University, Amaravati-522237, Andhra Pradesh, India
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2
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Rai RK, Karri R, Dubey KD, Roy G. Regulation of Tyrosinase Enzyme Activity by Glutathione Peroxidase Mimics. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:9730-9747. [PMID: 35861245 DOI: 10.1021/acs.jafc.2c02359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Hydrogen peroxide plays a crucial role in the melanogenesis process by regulating the activity of the key melanin-forming enzyme tyrosinase, responsible for the browning of fruits, vegetables, and seafood. Therefore, a molecule with dual activities, both efficient tyrosinase inhibition and strong hydrogen peroxide degrading ability, may act as a promising antibrowning agent. Herein, we report highly efficient selone-based mushroom tyrosinase inhibitors 2 and 3 with remarkable glutathione peroxidase (GPx) enzyme-like activity. The presence of benzimidazole moiety enhances the tyrosinase inhibition efficiency of selone 2 (IC50 = 0.4 μM) by almost 600 times higher than imidazole-based selone 1 (IC50 = 238 μM). Interestingly, the addition of another aromatic ring to the benzimidazole moiety has led to the development of an efficient lipid-soluble tyrosinase inhibitor 3 (IC50 = 2.4 μM). The selenium center and the -NH group of 2 and 3 are extremely crucial to exhibit high GPx-like activity and tyrosinase inhibition potency. The hydrophobic moiety of the inhibitors (2 and 3) further assists them in tightly binding at the active site of the enzyme and facilitates the C═Se group to strongly coordinate with the copper ions. Inhibitor 2 exhibited excellent antibrowning and polyphenol oxidase inhibition properties in banana and apple juice extracts.
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Affiliation(s)
- Rakesh Kumar Rai
- Department of Chemistry, Indian Institute of Technology Tirupati, Tirupati, Andhra Pradesh 517506, India
| | - Ramesh Karri
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Kshatresh Dutta Dubey
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Gouriprasanna Roy
- Department of Chemistry, Indian Institute of Technology Tirupati, Tirupati, Andhra Pradesh 517506, India
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3
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Angeli A, Ferraroni M, Capperucci A, Tanini D, Costantino G, Supuran CT. Selenocarbamates as a novel prodrug-based approach towards Carbonic Anhydrase inhibition. ChemMedChem 2022; 17:e202200085. [PMID: 35238480 PMCID: PMC9310613 DOI: 10.1002/cmdc.202200085] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/01/2022] [Indexed: 12/05/2022]
Abstract
A study on the activity of selenocarbamates as a novel chemotype acting as carbonic anhydrase (CA, EC 4.2.1.1) inhibitors is reported. Undergoing CA‐mediated hydrolysis, selenocarbamates release selenolates behaving as zinc binding groups and effectively inhibiting CAs. A series of selenocarbamates characterised by high molecular diversity and complexity have been studied against different human CA isoforms such as hCA I, II, IX and XII. Selenocarbamates behave as masked selenols with potential biological applications as prodrugs for CAs inhibition‐based strategies. X‐ray studies provided insights into the binding mode of this novel class of CA inhibitors.
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Affiliation(s)
- Andrea Angeli
- University of Florence: Universita degli Studi di Firenze, NEUROFARBA, Sezione di Scienze Farmaceutiche, ITALY
| | - Marta Ferraroni
- University of Florence: Universita degli Studi di Firenze, Chemistry "Ugo Schiff", ITALY
| | - Antonella Capperucci
- University of Florence: Universita degli Studi di Firenze, Chemistry "Ugo Schiff", ITALY
| | - Damiano Tanini
- Università degli Studi di Firenze, Dipartimento di Chimica "Ugo Schiff", Via della Lastruccia, 3-13, 50019, Firenze, ITALY
| | - Gabriele Costantino
- University of Parma: Universita degli Studi di Parma, Department of Food and Drug, ITALY
| | - Claudiu T Supuran
- University of Florence: Universita degli Studi di Firenze, NEUROFARBA, Sezione di Scienze Farmaceutiche, ITALY
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4
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Zhang C, Qiu Z, Zhang L, Pang Q, Yang Z, Qin JK, Liang H, Zhao S. Design and synthesis of a ratiometric photoacoustic imaging probe activated by selenol for visual monitoring of pathological progression of autoimmune hepatitis. Chem Sci 2021; 12:4883-4888. [PMID: 34163738 PMCID: PMC8179563 DOI: 10.1039/d0sc06573k] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 02/17/2021] [Indexed: 12/19/2022] Open
Abstract
Photoacoustic (PA) imaging with both the high contrast of optical imaging and the high spatial resolution of ultrasound imaging has been regarded as a robust biomedical imaging technique. Autoimmune hepatitis (AIH) is the second largest liver inflammatory disease after viral hepatitis, but its pathogenesis is not fully understood probably due to the lack of an effective in vivo monitoring approach. In this work, an innovative selenol-activated ratiometric PA imaging probe APSel was developed for visual monitoring of pathological progress of AIH. Selenols including selenocysteine (Sec, the major form of Se-containing species in vivo) have been demonstrated to have an effective antioxidant role in inflammation. The reaction of APSel with selenol results in a blue shift of the PA spectrum peak from 860 nm to 690 nm, which enables the ratiometric PA imaging. The APSel probe displays high sensitivity and selectivity to Sec and other selenols. The APSel probe was then employed for ratiometric PA imaging of selenol in cells, and for monitoring the development of AIH in a murine model by tracking the changes of selenol level. The results revealed that the level of selenol was closely correlated with the development of AIH. The proposed APSel, as the first example of a selenol-responsive PA imaging probe, provides a new tool and approach to study and diagnose AIH diseases.
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Affiliation(s)
- Chaobang Zhang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University Guilin 541004 China
| | - Zhidong Qiu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University Guilin 541004 China
| | - Liangliang Zhang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University Guilin 541004 China
| | - Qiufang Pang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University Guilin 541004 China
| | - Zhengmin Yang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University Guilin 541004 China
| | - Jiang-Ke Qin
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University Guilin 541004 China
| | - Hong Liang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University Guilin 541004 China
| | - Shulin Zhao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University Guilin 541004 China
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5
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Dereven'kov IA, Polyakova AY, Makarov SV. Kinetic and Mechanistic Studies on the Reaction between Aquacobalamin and Selenocysteine. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700973] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ilia A. Dereven'kov
- Department of Food Chemistry; Ivanovo State University of Chemistry and Technology; Sheremetevskiy str. 7 153000 Ivanovo Russia
| | - Anastasiya Yu. Polyakova
- Department of Food Chemistry; Ivanovo State University of Chemistry and Technology; Sheremetevskiy str. 7 153000 Ivanovo Russia
| | - Sergei V. Makarov
- Department of Food Chemistry; Ivanovo State University of Chemistry and Technology; Sheremetevskiy str. 7 153000 Ivanovo Russia
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Angeli A, Tanini D, Peat TS, Di Cesare Mannelli L, Bartolucci G, Capperucci A, Ghelardini C, Supuran CT, Carta F. Discovery of New Selenoureido Analogues of 4-(4-Fluorophenylureido)benzenesulfonamide as Carbonic Anhydrase Inhibitors. ACS Med Chem Lett 2017; 8:963-968. [PMID: 28947945 PMCID: PMC5601372 DOI: 10.1021/acsmedchemlett.7b00280] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 08/10/2017] [Indexed: 02/07/2023] Open
Abstract
A series of benzenesulfonamides bearing selenourea moieties was obtained considering the ureido-sulfonamide SLC-0111, in Phase I clinical trials as antitumor agent, as a lead molecule. All compounds showed interesting inhibition potencies against the physiologically relevant human (h) carbonic anhydrase (hCAs, EC 4.2.1.1) isoforms I, II, IV, and IX. The most flexible analogues in the series 14-19 showed low nanomolar inhibition constants against hCA I, II, and IX. We assessed selected compounds on the in vitro antioxidant properties and binding modes and evaluated ex vivo human prostate (PC3), breast (MDA-MB-231), and colon-rectal (HT-29) cancer cell lines both in normoxic and hypoxic conditions.
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Affiliation(s)
- Andrea Angeli
- University
of Florence, NEUROFARBA Dept., Sezione di
Scienze Farmaceutiche, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
| | - Damiano Tanini
- University
of Florence, Department of Chemistry “Ugo
Schiff”, Via della
Lastruccia 13, I-50019 Sesto Fiorentino, Florence, Italy
| | - Thomas S. Peat
- CSIRO, 343 Royal Parade, Parkville, Victoria 3052, Australia
| | - Lorenzo Di Cesare Mannelli
- NEUROFARBA
Department, Section of Pharmacology and Toxicology, Università degli Studi di Firenze, Viale Pieraccini 6, 50139 Florence, Italy
| | - Gianluca Bartolucci
- University
of Florence, NEUROFARBA Dept., Sezione di
Scienze Farmaceutiche, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
| | - Antonella Capperucci
- University
of Florence, Department of Chemistry “Ugo
Schiff”, Via della
Lastruccia 13, I-50019 Sesto Fiorentino, Florence, Italy
| | - Carla Ghelardini
- NEUROFARBA
Department, Section of Pharmacology and Toxicology, Università degli Studi di Firenze, Viale Pieraccini 6, 50139 Florence, Italy
| | - Claudiu T. Supuran
- University
of Florence, NEUROFARBA Dept., Sezione di
Scienze Farmaceutiche, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
| | - Fabrizio Carta
- University
of Florence, NEUROFARBA Dept., Sezione di
Scienze Farmaceutiche, Via Ugo Schiff 6, 50019 Sesto Fiorentino, Florence, Italy
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7
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Menichetti S, Capperucci A, Tanini D, Braga AL, Botteselle GV, Viglianisi C. A One-Pot Access to Benzo[b][1,4]selenazines from 2-Aminoaryl Diselenides. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600351] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Stefano Menichetti
- Department of Chemistry “U. Schiff”; University of Florence; Via della Lastruccia, 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Antonella Capperucci
- Department of Chemistry “U. Schiff”; University of Florence; Via della Lastruccia, 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Damiano Tanini
- Department of Chemistry “U. Schiff”; University of Florence; Via della Lastruccia, 3-13 50019 Sesto Fiorentino (FI) Italy
| | - Antonio L. Braga
- LabSelen - Lab. de Síntese de Pequenas Moléculas Quirais de Selênio e Telúrio; Dpto de Química; CFM - UFSC; Campus Universitário Trindade 88040-900 Florianópolis SC Brazil
| | - Giancarlo V. Botteselle
- Laboratório de Pesquisa em Química; Universidade Estadual do Oeste do Paraná - UNIOESTE; Centro de Engenharias e Ciências Exatas, CECE 85819-110 Toledo PR Brazil
| | - Caterina Viglianisi
- Department of Chemistry “U. Schiff”; University of Florence; Via della Lastruccia, 3-13 50019 Sesto Fiorentino (FI) Italy
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Singh VP, Poon JF, Butcher RJ, Engman L. Pyridoxine-Derived Organoselenium Compounds with Glutathione Peroxidase-Like and Chain-Breaking Antioxidant Activity. Chemistry 2014; 20:12563-71. [DOI: 10.1002/chem.201403229] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Indexed: 11/07/2022]
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