1
|
Musalov MV, Amosova SV, Potapov VA. Selenium Dibromide Click Chemistry: The Efficient Synthesis of Novel Selenabicyclo[3.3.1]nonene-2 and -nonane Derivatives. Int J Mol Sci 2023; 24:17485. [PMID: 38139313 PMCID: PMC10744190 DOI: 10.3390/ijms242417485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 12/10/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023] Open
Abstract
Highly efficient and convenient methods for the preparation of 35 novel derivatives of 9-selenabicyclo[3.3.1]nonane and 9-selenabicyclo[3.3.1]nonene-2 in high yields based on the adduct of the transannular addition of SeBr2 to 1,5-cyclooctadiene were developed. The methods for the amination of the adduct made it possible to obtain both diamino selenabicyclo[3.3.1]nonane derivatives and their dihydrobromide salts in one step in 88-98% yields. The methods meet the criteria of click chemistry. Compounds with high glutathione peroxidase mimetic activity were found among water-soluble dihydrobromide salts. The selective reaction of 2,6-dibromo-9-selenabicyclo[3.3.1]nonane with acetonitrile to form 6-bromo-9-selenabicyclo[3.3.1]nonene-2 was discovered. The latter compound served as a promising starting material to give rise to the new class of selenabicyclo[3.3.1]nonene-2 derivatives, e.g., 6-alkoxy-9-selenabicyclo[3.3.1]nonenes were obtained in 94-99% yields.
Collapse
Affiliation(s)
- Maxim V. Musalov
- A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Division of The Russian Academy of Sciences, 1 Favorsky Str., Irkutsk 664033, Russia; (S.V.A.); (V.A.P.)
| | | | | |
Collapse
|
2
|
Maurya SK, Tripathi A, Karuthapandi S, Singh HB. Synthesis and glutathione peroxidase (GPx)-like activity of selenocystine (SeC) bioconjugates of biotin and lipoic acid. Amino Acids 2023; 55:1981-1989. [PMID: 37971575 DOI: 10.1007/s00726-023-03348-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 10/10/2023] [Indexed: 11/19/2023]
Abstract
The conjugation of active biomolecules provides insight into their bioreactivity, leading to many applications in biotechnology and materials science. Herein, we report L-selenocystine (SeC) bioconjugates of lipoic acid (universal antioxidant) and biotin (Vitamin-H). The SeC-bioconjugates, SeC-Biotin (1) and SeC-Lipoic acid (2) were synthesized using solid phase peptide synthesis (SPPS) method and were characterized by multinuclear 1D (1H, 13C, 77Se) and 2D (1H-1H COSY and 1H-13C TOCSY) NMR spectroscopy, ESI-MS spectrometry, and RP-HPLC. The GPx-like enzyme mimicking activity of the SeC-bioconjugates 1 and 2 has been investigated through the coupled reductase assay method for the catalytic reductions of hydrogen peroxide into water. A significant enhancement in GPx-like enzymatic activity was observed for both novel bioconjugates SeC-Biotin (1) and SeC-Lipoic acid (2) as compared to diphenyl diselenide (Ph2Se2), L-selenocystine (SeC), biotin, lipoic acid, and ebselen.
Collapse
Affiliation(s)
- Shakti K Maurya
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Abhishek Tripathi
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Selvakumar Karuthapandi
- Department of Chemistry, School of Advanced Sciences, VIT-AP University, Amaravati, AP, 522241, India.
| | - Harkesh B Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India.
| |
Collapse
|
3
|
Sands KN, Burman AL, Ansah-Asamoah E, Back TG. Chemistry Related to the Catalytic Cycle of the Antioxidant Ebselen. Molecules 2023; 28:molecules28093732. [PMID: 37175141 PMCID: PMC10180093 DOI: 10.3390/molecules28093732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 04/22/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
The antioxidant drug ebselen has been widely studied in both laboratories and in clinical trials. The catalytic mechanism by which it destroys hydrogen peroxide via reduction with glutathione or other thiols is complex and has been the subject of considerable debate. During reinvestigations of several key steps, we found that the seleninamide that comprises the first oxidation product of ebselen underwent facile reversible methanolysis to an unstable seleninate ester and two dimeric products. In its reaction with benzyl alcohol, the seleninamide produced a benzyl ester that reacted readily by selenoxide elimination, with formation of benzaldehyde. Oxidation of ebselen seleninic acid did not afford a selenonium seleninate salt as previously observed with benzene seleninic acid, but instead generated a mixture of the seleninic and selenonic acids. Thiolysis of ebselen with benzyl thiol was faster than oxidation by ca. an order of magnitude and produced a stable selenenyl sulfide. When glutathione was employed, the product rapidly disproportionated to glutathione disulfide and ebselen diselenide. Oxidation of the S-benzyl selenenyl sulfide, or thiolysis of the seleninamide with benzyl thiol, afforded a transient thiolseleninate that also readily underwent selenoxide elimination. The S-benzyl derivative disproportionated readily when catalyzed by the simultaneous presence of both the thiol and triethylamine. The phenylthio analogue disproportionated when exposed to ambient or UV (360 nm) light by a proposed radical mechanism. These observations provide additional insight into several reactions and intermediates related to ebselen.
Collapse
Affiliation(s)
- Kai N Sands
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada
| | - Austin L Burman
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada
| | - Esther Ansah-Asamoah
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada
| | - Thomas G Back
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada
| |
Collapse
|
4
|
Kumar M, Chhillar B, Verma D, Nain S, Singh VP. Introduction of Methyl Group in Substituted Isoselenazolones: Catalytic and Mechanistic Study. J Org Chem 2023; 88:4273-4285. [PMID: 36930142 DOI: 10.1021/acs.joc.2c02831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Copper-catalyzed direct selenation of substituted 2-bromo-N-phenylbenzamide substrates with elemental selenium powder provided a series of methoxy-substituted isoselenazolones via the C-Se and Se-N bond formations. Phenolic substituted isoselenazolones have been obtained by O-demethylation of the corresponding methoxy-substituted analogues using boron tribromide. Some isoselenazolones have been structurally characterized by X-ray single-crystal analysis. The glutathione peroxidase (GPx)-like antioxidant activity of isoselenazolones has been evaluated both in thiophenol and coupled-reductase assays. All isoselenazolones showed good GPx-like activities in the coupled-reductase assay. The ferric-reducing antioxidant power of phenolic antioxidants has also been evaluated. The best phenolic antioxidants were found to be good ferric-reducing antioxidant power agents. The single electron transfer, hydrogen atom transfer, and proton-coupled electron transfer mechanisms for the antioxidant properties of all catalysts have been supported by density functional theory calculations. The catalytic cycle was proposed for one of the phenolic isoselenazolones involving diselenide, selenenyl sulfide, selenol, and selenenic acid as intermediates using 77Se{1H} NMR spectroscopy.
Collapse
Affiliation(s)
- Manish Kumar
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| | - Babli Chhillar
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| | - Divya Verma
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| | - Sumit Nain
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| | - Vijay P Singh
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| |
Collapse
|
5
|
Musalov MV, Potapov VA. Click Chemistry of Selenium Dihalides: Novel Bicyclic Organoselenium Compounds Based on Selenenylation/Bis-Functionalization Reactions and Evaluation of Glutathione Peroxidase-like Activity. Int J Mol Sci 2022; 23:ijms232415629. [PMID: 36555274 PMCID: PMC9779772 DOI: 10.3390/ijms232415629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/05/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022] Open
Abstract
A number of highly efficient methods for the preparation of novel derivatives of 9-selenabicyclo[3.3.1]nonane in high yields based on selenium dibromide and cis,cis-1,5-cyclooctadiene are reported. The one-pot syntheses of 2,6-diorganyloxy-9-selenabicyclo[3.3.1]nonanes using various O-nucleophiles including alkanols, phenols, benzyl, allyl, and propargyl alcohols were developed. New 2,6-bis(1,2,3-triazol-1-yl)-9-selenabicyclo[3.3.1]nonanes were obtained by the copper-catalyzed 1,3-dipolar cycloaddition of 2,6-diazido-9-selenabicyclo[3.3.1]nonane with unsubstituted gaseous acetylene and propargyl alcohol. The synthesis of 2,6-bis(vinylsulfanyl)-9-selenabicyclo[3.3.1]nonane, based on the generation of corresponding dithiolate anion from bis[amino(iminio)methylsulfanyl]-9-selenabicyclo[3.3.1]nonane dibromide, followed by the nucleophilic addition of the dithiolate anion to unsubstituted acetylene, was developed. The glutathione peroxidase-like activity of the obtained water-soluble products was estimated and compounds with high activity were found. Overall, 2,6-Diazido-9-selenabicyclo[3.3.1]nonane exhibits the highest activity among the obtained compounds.
Collapse
|
6
|
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.
Collapse
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
| |
Collapse
|
7
|
Chemoselective Preparation of New Families of Phenolic-Organoselenium Hybrids-A Biological Assessment. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27041315. [PMID: 35209105 PMCID: PMC8875169 DOI: 10.3390/molecules27041315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/28/2022] [Accepted: 02/08/2022] [Indexed: 12/02/2022]
Abstract
Being aware of the enormous biological potential of organoselenium and polyphenolic compounds, we have accomplished the preparation of novel hybrids, combining both pharmacophores in order to obtain new antioxidant and antiproliferative agents. Three different families have been accessed in a straightforward and chemoselective fashion: carbohydrate-containing N-acylisoselenoureas, N-arylisoselenocarbamates and N-arylselenocarbamates. The nature of the organoselenium framework, number and position of phenolic hydroxyl groups and substituents on the aromatic scaffolds afforded valuable structure–activity relationships for the biological assays accomplished: antioxidant properties (antiradical activity, DNA-protective effects, Glutathione peroxidase (GPx) mimicry) and antiproliferative activity. Regarding the antioxidant activity, selenocarbamates 24–27 behaved as excellent mimetics of GPx in the substoichiometric elimination of H2O2 as a Reactive Oxygen Species (ROS) model. Isoselenocarbamates and particularly their selenocarbamate isomers exhibited potent antiproliferative activity against non-small lung cell lines (A549, SW1573) in the low micromolar range, with similar potency to that shown by the chemotherapeutic agent cisplatin (cis-diaminodichloroplatin, CDDP) and occasionally with more potency than etoposide (VP-16).
Collapse
|
8
|
Deshmukh PP, Malankar GS, Sakunthala A, Navalkar A, Maji SK, Murale DP, Saravanan R, Manjare ST. An efficient chemodosimeter for the detection of Hg(II) via diselenide oxidation. Dalton Trans 2022; 51:2269-2277. [PMID: 35073568 DOI: 10.1039/d1dt04038c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mercury ions are toxic and exhibit hazardous effects on the environment and biological systems, and thus demand for the selective and sensitive detection of mercury has become considerably an important issue. Here, we have developed a diselenide containing coumarin-based probe 3 for the selective detection of Hg(II) with a "turn-on" response (a 48 fold increase in fluorescence intensity) at 438 nm. The probe could quantitatively detect Hg(II) with a detection limit of 1.32 μM in PBS solution. Moreover, the probe has operable efficiency over the physiological range with an increase in the quantum yield from 1.2% to 57.3%. The reaction of the probe with Hg(II) yielded a novel monoselenide based coumarin 4via diselenide oxidation, which was confirmed by single crystal XRD. Furthermore, the biological use of the probe for the detection of Hg(II) was confirmed in the MCF-7 cell line. To the best of our knowledge, this is the first reaction-based probe for Hg(II) via diselenide oxidation.
Collapse
Affiliation(s)
| | - Gauri S Malankar
- Department of Chemistry, University of Mumbai, Mumbai, 400098, India.
| | - Arunima Sakunthala
- Department of Biosciences and Bioengineering, IIT Bombay, Mumbai, 400076, India
| | - Ambuja Navalkar
- Department of Biosciences and Bioengineering, IIT Bombay, Mumbai, 400076, India
| | - Samir K Maji
- Department of Biosciences and Bioengineering, IIT Bombay, Mumbai, 400076, India
| | - Dhiraj P Murale
- Molecular Recognition Research Center, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Raju Saravanan
- Department of Chemistry, IIT Bombay, Mumbai, 400076, India
| | - Sudesh T Manjare
- Department of Chemistry, University of Mumbai, Mumbai, 400098, India.
| |
Collapse
|
9
|
Zhang C, Zhang L, Li Y, Ren Z, Li L, Zhang Y, Li Y, Liu C. A simple and efficient fluorescent probe for rapidly detecting H2S in GBC - SD cells based on 1,8 - naphthalimide - ebselen. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
10
|
Kumar M, Singh VP. Synthesis and antioxidant activities of N-thiophenyl ebselenamines: a 77Se{ 1H} NMR mechanistic study. NEW J CHEM 2022. [DOI: 10.1039/d2nj01225a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of N-thiophenyl ebselenamines and selenenyl sulphides as efficient radical-trapping and hydroperoxide-decomposing antioxidants, respectively has been described.
Collapse
Affiliation(s)
- Manish Kumar
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| | - Vijay P. Singh
- Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh 160 014, India
| |
Collapse
|
11
|
Martynov VI, Pakhomov AA. BODIPY derivatives as fluorescent reporters of molecular activities in living cells. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr4985] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Abstract
Fluorescent compounds have become indispensable tools for imaging molecular activities in the living cell. 4,4-Difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) is currently one of the most popular fluorescent reporters due to its unique photophysical properties. This review provides a general survey and presents a summary of recent advances in the development of new BODIPY-based cellular biomarkers and biosensors. The review starts with the consideration of the properties of BODIPY derivatives required for their application as cellular reporters. Then review provides examples of the design of sensors for different biologically important molecules, ions, membrane potential, temperature and viscosity defining the live cell status. Special attention is payed to BODPY-based phototransformable reporters.
The bibliography includes 339 references.
Collapse
|
12
|
Upadhyay A, Kumar Jha R, Batabyal M, Dutta T, Koner AL, Kumar S. Janus -faced oxidant and antioxidant profiles of organo diselenides. Dalton Trans 2021; 50:14576-14594. [PMID: 34590653 DOI: 10.1039/d1dt01565f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To date, organoseleniums are pre-eminent for peroxide decomposition and radical quenching antioxidant activities. On the contrary, here, a series of Janus-faced aminophenolic diselenides have been prepared from substituted 2-iodoaniline and selenium powder using copper-catalyzed methodology. Subsequently, condensation with substituted salicylaldehyde afforded the Schiff base, which on reduction, yielded the desired substituted aminophenolic diselenides in 72%-88% yields. The generation of reactive oxygen species (ROS) from oxygen gas by the synthesized aminophenolic diselenides was studied by analyzing the oxidation of dichlorofluorescein diacetate (DCFDA) dye and para-nitro-thiophenol by fluorescence and UV-Visible spectroscopic methods. Furthermore, density functional theory calculations and crystal structure analysis revealed the role of functional amine and hydroxyl sites present in the Janus-faced organoselenium catalyst for the activation of molecular oxygen, where NH and phenolic groups bring the oxygen molecule close to the catalyst by N-H⋯O and O-H⋯O intermolecular interactions. Additionally, these functionalities stabilize the selenium-centered radical in the formed transition states. Antioxidant activities of the synthesized diselenides have been explored as the catalyst for the decomposition of hydrogen peroxide using benzenethiol sacrificial co-reductant by a well-established thiol assay. Radical quenching antioxidant activity was studied by the quenching of DPPH radicals at 516 nm by UV-Visible spectroscopy. The structure activity correlation suggests that the electron-rich phenol and electron-rich and sterically hindered selenium center enhance the oxidizing property of the aminophenolic diselenides. Janus-faced diselenides were also evaluated for their cytotoxic effect on HeLa cancer cells via MTT assay, which suggests that the compounds are effective at 15-18 μM concentration against cancer cells. Moreover, the combination with therapeutic anticancer drugs Erlotinib and Doxorubicin showed promising cytotoxicity at the nanomolar concentration (8-28 nM), which is sufficient to suppress the growth of the cancer cells.
Collapse
Affiliation(s)
- Aditya Upadhyay
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhauri By-pass Road, Bhopal 462066, Madhya Pradesh, India.
| | - Raushan Kumar Jha
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhauri By-pass Road, Bhopal 462066, Madhya Pradesh, India.
| | - Monojit Batabyal
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhauri By-pass Road, Bhopal 462066, Madhya Pradesh, India.
| | - Tanoy Dutta
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhauri By-pass Road, Bhopal 462066, Madhya Pradesh, India.
| | - Apurba Lal Koner
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhauri By-pass Road, Bhopal 462066, Madhya Pradesh, India.
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhauri By-pass Road, Bhopal 462066, Madhya Pradesh, India.
| |
Collapse
|
13
|
Calle L, Marrero-Ponce Y, Mora JR. Molecular simulation of the (GPx)-like antioxidant activity of ebselen derivatives through machine learning techniques. MOLECULAR SIMULATION 2021. [DOI: 10.1080/08927022.2021.1975039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Luis Calle
- Facultad de Ciencias Médicas, Instituto de Investigación e Innovación en Salud Integral (ISAIN), Universidad Católica Santiago de Guayaquil, Guayaquil, Ecuador
- Faculty of Pharmacy, University of Granada, Granada, Spain
| | - Yovani Marrero-Ponce
- Grupo de Química Computacional y Teórica (QCT-USFQ), Departamento de Ingeniería Química, Universidad San Francisco de Quito, Quito, Ecuador
- Grupo de Medicina Molecular y Traslacional (MeM&T), Colegio de Ciencias de la Salud (COCSA), Escuela de Medicina, Universidad San Francisco de Quito, Quito, Ecuador
| | - José R. Mora
- Grupo de Química Computacional y Teórica (QCT-USFQ), Departamento de Ingeniería Química, Universidad San Francisco de Quito, Quito, Ecuador
| |
Collapse
|
14
|
|
15
|
Toxicology and pharmacology of synthetic organoselenium compounds: an update. Arch Toxicol 2021; 95:1179-1226. [PMID: 33792762 PMCID: PMC8012418 DOI: 10.1007/s00204-021-03003-5] [Citation(s) in RCA: 90] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 02/10/2021] [Indexed: 12/17/2022]
Abstract
Here, we addressed the pharmacology and toxicology of synthetic organoselenium compounds and some naturally occurring organoselenium amino acids. The use of selenium as a tool in organic synthesis and as a pharmacological agent goes back to the middle of the nineteenth and the beginning of the twentieth centuries. The rediscovery of ebselen and its investigation in clinical trials have motivated the search for new organoselenium molecules with pharmacological properties. Although ebselen and diselenides have some overlapping pharmacological properties, their molecular targets are not identical. However, they have similar anti-inflammatory and antioxidant activities, possibly, via activation of transcription factors, regulating the expression of antioxidant genes. In short, our knowledge about the pharmacological properties of simple organoselenium compounds is still elusive. However, contrary to our early expectations that they could imitate selenoproteins, organoselenium compounds seem to have non-specific modulatory activation of antioxidant pathways and specific inhibitory effects in some thiol-containing proteins. The thiol-oxidizing properties of organoselenium compounds are considered the molecular basis of their chronic toxicity; however, the acute use of organoselenium compounds as inhibitors of specific thiol-containing enzymes can be of therapeutic significance. In summary, the outcomes of the clinical trials of ebselen as a mimetic of lithium or as an inhibitor of SARS-CoV-2 proteases will be important to the field of organoselenium synthesis. The development of computational techniques that could predict rational modifications in the structure of organoselenium compounds to increase their specificity is required to construct a library of thiol-modifying agents with selectivity toward specific target proteins.
Collapse
|
16
|
Upadhyay A, Singh Bhakuni B, Meena R, Kumar S. Radical Chain Breaking Bis(
ortho
‐organoselenium) Substituted Phenolic Antioxidants. Chem Asian J 2021; 16:966-973. [DOI: 10.1002/asia.202100139] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 02/26/2021] [Indexed: 12/24/2022]
Affiliation(s)
- Aditya Upadhyay
- Department of Chemistry Indian Institute of Science Education and Research Bhopal By-Pass Road Bhauri, Bhopal 462 066 Madhya Pradesh India
| | - Bhagat Singh Bhakuni
- Department of Chemistry Indian Institute of Science Education and Research Bhopal By-Pass Road Bhauri, Bhopal 462 066 Madhya Pradesh India
| | - Rahul Meena
- Department of Chemistry Indian Institute of Science Education and Research Bhopal By-Pass Road Bhauri, Bhopal 462 066 Madhya Pradesh India
| | - Sangit Kumar
- Department of Chemistry Indian Institute of Science Education and Research Bhopal By-Pass Road Bhauri, Bhopal 462 066 Madhya Pradesh India
| |
Collapse
|
17
|
Kumar M, Chhillar B, Yadav M, Sagar P, Singhal NK, Gates PJ, Butcher RJ, Singh VP. Catalytic and highly regenerable aminic organoselenium antioxidants with cytoprotective effects. Org Biomol Chem 2021; 19:2015-2022. [DOI: 10.1039/d0ob02368j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N-Methyl ebselenamines carrying an aminic group in very close proximity to selenium as excellent chain-breaking and glutathione peroxidase-like antioxidants could reduce the production of ROS in C6 astroglial cell lines with minimal toxic effects.
Collapse
Affiliation(s)
- Manish Kumar
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160 014
- India
| | - Babli Chhillar
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160 014
- India
| | - Manisha Yadav
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160 014
- India
| | - Poonam Sagar
- Department of Biotechnology
- National Agri-Food Biotechnology Institute
- Mohali 160071
- India
| | - Nitin K. Singhal
- Department of Biotechnology
- National Agri-Food Biotechnology Institute
- Mohali 160071
- India
| | | | | | - Vijay P. Singh
- Department of Chemistry & Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh-160 014
- India
| |
Collapse
|
18
|
Yu SC, Kim IC, Ri KJ, Ri J, Kühn H. New insight into the role of glutathione reductase in glutathione peroxidase-like activity determination by coupled reductase assay: Molecular Docking Study. J Inorg Biochem 2020; 215:111276. [PMID: 33341590 DOI: 10.1016/j.jinorgbio.2020.111276] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 10/02/2020] [Accepted: 10/03/2020] [Indexed: 12/23/2022]
Abstract
Previously we have shown that among 15 substituted salicyloyl (2-hydroxybenzoyl) 5-seleninic acids (SSAs) 4 compounds with longer side chains or a cyclohexyl group exhibit no glutathione peroxidase (GPx)-like activity in the coupled reductase assay. Experimental inhibition of glutathione reductase (GR) by the selenenylsulfide (a main intermediate in the catalytic cycle for GPx-like activity determination) of one of the inactive compounds led us to assess the interactions between 15 selenenylsulfide compounds and the active site of GR by molecular docking. Docking results showed that S and Se atoms in selenenylsulfides of the compounds with no GPx-like activity were beyond 5 Å from S atom of Cys-58 or N atom of imidazole ring of His-467 (Root Mean Square Distances for general assessment of 3 major distances were over 4.8 Å) in the active site, so that they could not be catalyzed to be reduced by GR. Furthermore, their docking scores over 89 Kcal/mol meant that the selenenylsulfides were bound too strongly to the active site to leave it, leading eventually to inhibition of GR. We also applied the molecular docking to other GPx mimics such as ebselen, cyclic seleninate esters and di(propylaminomethylphenyl) diselenides to explain the differences in their GPx-like activity depending to the assays used. Our results suggest that the reduction of a selenenylsulfide by GR plays a positive role in GPx-like activity of GPx mimics in the coupled assay and recommended the prediction of possibility and strength of GPx-like activity by molecular docking before entering experimental research.
Collapse
Affiliation(s)
- Sun-Chol Yu
- Faculty of Pharmacy, Pyongyang University of Medical Sciences, Ryonhwa Dong No. 2, Central District, Pyongyang, DPR of Korea.
| | - In-Chol Kim
- Faculty of Pharmacy, Pyongyang University of Medical Sciences, Ryonhwa Dong No. 2, Central District, Pyongyang, DPR of Korea
| | - Kum-Ju Ri
- Faculty of Pharmacy, Pyongyang University of Medical Sciences, Ryonhwa Dong No. 2, Central District, Pyongyang, DPR of Korea
| | - Jin Ri
- Faculty of Pharmacy, Pyongyang University of Medical Sciences, Ryonhwa Dong No. 2, Central District, Pyongyang, DPR of Korea
| | - Hartmut Kühn
- Institute of Biochemistry, University Medicine Berlin-Charité, Chariteplatz 1, Berlin D-10117, Germany
| |
Collapse
|
19
|
Madibone K, Deshmukh PP, Navalkar A, Maji SK, Badani PM, Manjare ST. Cyclic Organoselenide BODIPY-Based Probe: Targeting Superoxide in MCF-7 Cancer Cells. ACS OMEGA 2020; 5:14186-14193. [PMID: 32566887 PMCID: PMC7301547 DOI: 10.1021/acsomega.0c02074] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 05/22/2020] [Indexed: 06/11/2023]
Abstract
All aerobic cells contain reactive oxygen species (ROSs) in balance with biochemical antioxidants. Oxidative stress is developed when this balance gets disturbed because of excessive production of ROSs or depletion of antioxidants. Here, in this work, we have developed the first cyclic diselenide BODIPY-based (organoselenium-containing) probe for the selective detection of superoxide. The probe demonstrates excellent selective response for superoxide over other ROSs with nine-fold increase in fluorescence intensity. The detection limit was found to be 0.924 μM. The plausible "turn-on" mechanism has been proposed based on the spectroscopic and quantum chemical data. Usefulness of the probe for selective detection of superoxide was confirmed in mammalian breast cancer cell lines.
Collapse
Affiliation(s)
| | | | - Ambuja Navalkar
- Department
of Biosciences and Bioengineering, IIT Bombay, Mumbai 400076, India
| | - Samir K. Maji
- Department
of Biosciences and Bioengineering, IIT Bombay, Mumbai 400076, India
| | - Purav M. Badani
- Department
of Chemistry, University of Mumbai, Santacruz (E), Mumbai 400098, India
| | - Sudesh T. Manjare
- Department
of Chemistry, University of Mumbai, Santacruz (E), Mumbai 400098, India
| |
Collapse
|
20
|
Tanini D, Ricci L, Capperucci A. Rongalite‐Promotedon WaterSynthesis of Functionalised Tellurides and Ditellurides. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901536] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Damiano Tanini
- University of FlorenceDepartment of Chemistry “Ugo Schiff” Via della Lastruccia 3–13 I-50019 Sesto Fiorentino Italy
| | - Lorenzo Ricci
- University of FlorenceDepartment of Chemistry “Ugo Schiff” Via della Lastruccia 3–13 I-50019 Sesto Fiorentino Italy
| | - Antonella Capperucci
- University of FlorenceDepartment of Chemistry “Ugo Schiff” Via della Lastruccia 3–13 I-50019 Sesto Fiorentino Italy
| |
Collapse
|
21
|
Fourmigué M, Dhaka A. Chalcogen bonding in crystalline diselenides and selenocyanates: From molecules of pharmaceutical interest to conducting materials. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213084] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
22
|
Xu H, Su X, Liu XQ, Zhang KP, Hou Z, Guo C. Design, synthesis and biological evaluation of novel semicarbazone-selenochroman-4-ones hybrids as potent antifungal agents. Bioorg Med Chem Lett 2019; 29:126726. [DOI: 10.1016/j.bmcl.2019.126726] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 09/19/2019] [Accepted: 09/30/2019] [Indexed: 10/25/2022]
|
23
|
Tiezza MD, Ribaudo G, Orian L. Organodiselenides: Organic Catalysis and Drug Design Learning from Glutathione Peroxidase. CURR ORG CHEM 2019. [DOI: 10.2174/1385272822666180803123137] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Organodiselenides are an important class of compounds characterized by the
presence of two adjacent covalently bonded selenium nuclei. Among them,
diaryldiselenides and their parent compound diphenyl diselenide attract continuing interest
in chemistry as well as in close disciplines like medicinal chemistry, pharmacology and
biochemistry. A search in SCOPUS database has revealed that in the last three years 105
papers have been published on the archetypal diphenyl diselenide and its use in organic
catalysis and drug tests. The reactivity of the Se-Se bond and the redox properties of selenium
make diselenides efficient catalysts for numerous organic reactions, such as Bayer-
Villiger oxidations of aldehydes/ketones, epoxidations of alkenes, oxidations of alcohols
and nitrogen containing compounds. In addition, organodiselenides might find application
as mimics of glutathione peroxidase (GPx), a family of enzymes, which, besides performing other functions,
regulate the peroxide tone in the cells and control the oxidative stress level. In this review, the essential synthetic
and reactivity aspects of organoselenides are collected and rationalized using the results of accurate
computational studies, which have been carried out mainly in the last two decades. The results obtained in
silico provide a clear explanation of the anti-oxidant activity of organodiselenides and more in general of their
ability to reduce hydroperoxides. At the same time, they are useful to gain insight into some aspects of the enzymatic
activity of the GPx, inspiring novel elements for rational catalyst and drug design.
Collapse
Affiliation(s)
- Marco Dalla Tiezza
- Dipartimento di Scienze Chimiche, Universita degli Studi di, Via Marzolo 1, 35131 Padova, Italy
| | - Giovanni Ribaudo
- Dipartimento di Scienze del Farmaco, Universita degli Studi di Padova, Via Marzolo 5, 35131 Padova, Italy
| | - Laura Orian
- Dipartimento di Scienze Chimiche, Universita degli Studi di, Via Marzolo 1, 35131 Padova, Italy
| |
Collapse
|
24
|
Orth N, Scheitler A, Josef V, Franke A, Zahl A, Ivanović‐Burmazović I. Synthesis of a Hybrid between SOD Mimetic and Ebselen to Target Oxidative Stress. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Nicole Orth
- Department of Chemistry and Pharmacy University of Erlangen‐Nuremberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Andreas Scheitler
- Department of Chemistry and Pharmacy University of Erlangen‐Nuremberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Verena Josef
- Department of Chemistry and Pharmacy University of Erlangen‐Nuremberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Alicja Franke
- Department of Chemistry and Pharmacy University of Erlangen‐Nuremberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Achim Zahl
- Department of Chemistry and Pharmacy University of Erlangen‐Nuremberg Egerlandstrasse 1 91058 Erlangen Germany
| | - Ivana Ivanović‐Burmazović
- Department of Chemistry and Pharmacy University of Erlangen‐Nuremberg Egerlandstrasse 1 91058 Erlangen Germany
| |
Collapse
|
25
|
Selenium– and tellurium–nitrogen reagents. PHYSICAL SCIENCES REVIEWS 2019. [DOI: 10.1515/psr-2017-0125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The reactivity of the chalcogen–nitrogen bond toward main-group element or transition-metal halides, as well as electrophilic and nucleophilic reagents, is the source of a variety of applications of Se–N and Te–N compounds in both inorganic or organic chemistry. The thermal lability of Se–N compounds also engenders useful transformations including the formation of radicals via homolytic Se–N bond cleavage. These aspects of Se–N and Te–N chemistry will be illustrated with examples from the reactions of the binary selenium nitride Se4N4, selenium–nitrogen halides [N(SeCln)2]+ (n = 1, 2), the synthons E(NSO)2 (E = Se, Te), chalcogen–nitrogen–silicon reagents, chalcogen(IV) diimides RN=E=NR, the triimidotellurite dianion [Te(NtBu)3]2−, chalcogen(II) amides and diamides E(NR2)2 (E = Se, Te; R = alkyl, SiMe3), and heterocyclic systems.
Collapse
|
26
|
Sudati JH, Nogara PA, Saraiva RA, Wagner C, Alberto EE, Braga AL, Fachinetto R, Piquini PC, Rocha JBT. Diselenoamino acid derivatives as GPx mimics and as substrates of TrxR: in vitro and in silico studies. Org Biomol Chem 2019; 16:3777-3787. [PMID: 29737350 DOI: 10.1039/c8ob00451j] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Excessive production of reactive species in living cells usually has pathological effects. Consequently, the synthesis of compounds which can mimic the activity of antioxidant enzymes has inspired great interest. In this study, a variety of diselenoamino acid derivatives from phenylalanine and valine were tested to determine whether they could be functional mimics of glutathione peroxidase (GPx) and substrates for liver thioredoxin reductase (TrxR). Diselenides C and D showed the best GPx mimicking properties when compared with A and B. We suppose that the catalytic activity of diselenide GPx mimics depends on the steric effects, which can be influenced by the number of carbon atoms between the selenium atom and the amino acid residue and/or by the amino acid lateral residue. Compounds C and D stimulated NADPH oxidation in the presence of partially purified hepatic mammalian TrxR, indicating that they are substrates for TrxR. Our study indicates a possible dissociation between the two pathways for peroxide degradation (i.e., via a substrate for TrxR or via mimicry of GPx) for compounds tested in this study, except for PhSeSePh, and the antioxidant activity of diselenoamino acids can also be attributed to their capacity to mimic GPx and to be a substrate for mammalian TrxR.
Collapse
|
27
|
Sands KN, Back TG. Key steps and intermediates in the catalytic mechanism for the reduction of peroxides by the antioxidant ebselen. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
28
|
Selvakumar K, Singh HB. Adaptive responses of sterically confined intramolecular chalcogen bonds. Chem Sci 2018; 9:7027-7042. [PMID: 30310623 PMCID: PMC6137456 DOI: 10.1039/c8sc01943f] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 07/24/2018] [Indexed: 12/20/2022] Open
Abstract
The existence of intramolecular chalcogen bonds (IChBs) in 2,6-disubstituted arylchalcogen derivatives is determined by the substituents and the sigma hole donor behavior of the chalcogen atom in the molecule.
The responsive behavior of an entity towards its immediate surrounding is referred to as an adaptive response. The adaptive responses of a noncovalent interaction at the molecular scale are reflected from its structural and functional roles. Intramolecular chalcogen bonding (IChB), an attractive interaction between a heavy chalcogen E (E = Se or Te) centered sigma hole and an ortho-heteroatom Lewis base donor D (D = O or N), plays an adaptive role in defining the structure and reactivity of arylchalcogen compounds. In this perspective, we describe the adaptive roles of a chalcogen centered Lewis acid sigma hole and a proximal Lewis base (O or N) in accommodating built-in steric stress in 2,6-disubstituted arylchalcogen compounds. From our perspective, the IChB components (a sigma hole and the proximal Lewis base) act in synergism to accommodate the overwhelming steric force. The adaptive responses of the IChB components are inferred from the observed molecular structures and reactivity. These include (a) adaptation of a conformation without IChBs, (b) adaptation of a conformation with weak IChBs, (c) twisting the skeletal aryl ring while maintaining IChBs, (d) ionization of the E–X bond (e.g., X = Br) to relieve stress and (e) intramolecular cyclization to relieve steric stress. A comprehensive approach, involving X-ray data analysis, density functional theory (DFT) calculations, reaction pattern analysis and principal component analysis (PCA), has been employed to rationalize the adaptive behaviors of IChBs in arylchalcogen compounds. We believe that the perception of ChB as an adaptive/stimulus responsive interaction would profit the futuristic approaches that would utilise ChB as self-assembly and molecular recognition tools.
Collapse
Affiliation(s)
| | - Harkesh B Singh
- Department of Chemistry , Indian Institute of Technology Bombay , Powai-400076 , Mumbai , Maharashtra , India .
| |
Collapse
|
29
|
Rani V, Singh HB, Butcher RJ. Synthesis and structure of an aryl-selenenium(II) cation, [C 34H 41N 4Se +] 2[Hg(SeCN) 4] 2-, based on a 5- tert-butyl-1,3-bis-(1-pentyl-1 H-benzimidazol-2-yl)benzene scaffold. Acta Crystallogr E Crystallogr Commun 2018; 74:786-790. [PMID: 29951230 PMCID: PMC6002820 DOI: 10.1107/s2056989018006394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 04/25/2018] [Indexed: 11/23/2022]
Abstract
In the title salt, bis-{[5-tert-butyl-1,3-bis-(1-pentyl-1H-benzimidazol-2-yl)benzene]selenium} tetra-kis-(seleno-cyanato)-mercury, (C34H41N4Se)2[Hg(SeCN)4], the aryl-selenenium cations, [C34H41N4Se]+, are linked through [Hg(SeCN)4]2- anions by C-H⋯N hydrogen bonds. In the cation, the geometry around the Se atom in the 5-tert-butyl-1,3-bis-(1-pentyl-1H-benzimidazol-2-yl)benzene scaffold is T-shaped, resulting from the coordination of Se by the C atom of the central aromatic ring and the N atoms of both of the benzimidazole moieties. The trans Se-N bond lengths are almost equal [2.087 (3) and 2.099 (3) Å] and the Se-C bond length is 1.886 (3) Å. The N-Se-N angle is 159.29 (11)°. The geometry around the HgII atom in the [Hg(SeCN)4]2- anion is distorted tetra-hedral, with Se-Hg-Se angles ranging from 88.78 (3) to 126.64 (2)°. In [Hg(SeCN)4]2-, the Hg-Se bonds are unsymmetrical [2.5972 (4) and 2.7242 (5) Å]. One of the pentyl substituents is disordered over two equivalent conformations, with occupancies of 0.852 (8) and 0.148 (8).
Collapse
Affiliation(s)
- Varsha Rani
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Harkesh B. Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Ray J. Butcher
- Department of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA
| |
Collapse
|
30
|
Yu SC, Ri DM, Kühn H. Hydrophobicity and glutathione peroxidase-like activity of substituted salicyloyl-5-seleninic acids: Re-investigations on aromatic selenium compounds based on their hydrophobicity. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.02.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
31
|
Sands KN, Tuck TA, Back TG. Cyclic Seleninate Esters, Spirodioxyselenuranes and Related Compounds: New Classes of Biological Antioxidants That Emulate Glutathione Peroxidase. Chemistry 2018. [DOI: 10.1002/chem.201800182] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Kai N. Sands
- Department of Chemistry; University of Calgary; 2500 University Drive NW Calgary Alberta T2N 1N4 Canada
| | - Tyler A. Tuck
- Department of Chemistry; University of Calgary; 2500 University Drive NW Calgary Alberta T2N 1N4 Canada
| | - Thomas G. Back
- Department of Chemistry; University of Calgary; 2500 University Drive NW Calgary Alberta T2N 1N4 Canada
| |
Collapse
|
32
|
Liu Q, Lv X, Li N, Pan X, Zhu J, Zhu X. Copolymerization of Phenylselenide-Substituted Maleimide with Styrene and Its Oxidative Elimination Behavior. Polymers (Basel) 2018; 10:E321. [PMID: 30966356 PMCID: PMC6415178 DOI: 10.3390/polym10030321] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 03/09/2018] [Accepted: 03/10/2018] [Indexed: 02/02/2023] Open
Abstract
Selenium-containing monomer monophenyl maleimide selenide (MSM) was synthesized and copolymerized with styrene (St) using reversible addition-fragmentation chain transfer (RAFT) polymerization. Copolymers with controlled molecular weight and narrow molecular weight distribution were obtained. The structure of the copolymer was characterized by nuclear magnetic resonance, matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrum, Fourier transform infrared spectroscopy (FT-IR) and Ultraviolet⁻visible spectroscopy (UV-vis) spectroscopy. The copolymer can be oxidized by H₂O₂ to form carbon-carbon double bonds within the main chain due to the unique sensitivity of selenide groups in the presence of oxidants. Such structure changing resulted in an interesting concentration-related photoluminescence emission enhancement.
Collapse
Affiliation(s)
- Qian Liu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Xinghua Lv
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Na Li
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Xiangqiang Pan
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Jian Zhu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| | - Xiulin Zhu
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
| |
Collapse
|
33
|
Debnath A, Nelson AT, Silva-Olivares A, Shibayama M, Siegel D, McKerrow JH. In Vitro Efficacy of Ebselen and BAY 11-7082 Against Naegleria fowleri. Front Microbiol 2018; 9:414. [PMID: 29559968 PMCID: PMC5845744 DOI: 10.3389/fmicb.2018.00414] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 02/21/2018] [Indexed: 11/13/2022] Open
Abstract
Primary amebic meningoencephalitis (PAM) is a fatal infection caused by the free-living ameba Naegleria fowleri, popularly known as the "brain-eating ameba." The drugs of choice in treating PAM are the antifungal amphotericin B and an antileishmanial miltefosine, but these are not FDA-approved for this indication and use of amphotericin B is associated with severe adverse effects. Moreover, very few patients treated with the combination therapy have survived PAM. Therefore, development of efficient drugs is a critical unmet need to avert future deaths of children. Since N. fowleri causes extensive inflammation in the brain it is important to select compounds that can enter brain to kill ameba. In this study, we identified two central nervous system (CNS) active compounds, ebselen and BAY 11-7082 as amebicidal with EC50 of 6.2 and 1.6 μM, respectively. The closely related BAY 11-7085 was also found active against N. fowleri with EC50 similar to BAY 11-7082. We synthesized a soluble ebselen analog, which had amebicidal activity similar to ebselen. Transmission electron microscopy of N. fowleri trophozoites incubated for 48 h with EC50 concentration of ebselen showed alteration in the cytoplasmic membrane, loss of the nuclear membrane, and appearance of electron-dense granules. Incubation of N. fowleri trophozoites with EC50 concentrations of BAY 11-7082 and BAY 11-7085 for 48 h showed the presence of large lipid droplets in the cytoplasm, disruption of cytoplasmic and nuclear membranes and appearance of several vesicles and chromatin residues. Blood-brain barrier permeable amebicidal compounds have potential as new drug leads for Naegleria infection.
Collapse
Affiliation(s)
- Anjan Debnath
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA, United States
| | - Andrew T Nelson
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA, United States
| | - Angélica Silva-Olivares
- Department of Infectomics and Molecular Pathogenesis, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, Mexico
| | - Mineko Shibayama
- Department of Infectomics and Molecular Pathogenesis, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Mexico City, Mexico
| | - Dionicio Siegel
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA, United States
| | - James H McKerrow
- Center for Discovery and Innovation in Parasitic Diseases, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA, United States
| |
Collapse
|
34
|
Tanini D, Grechi A, Ricci L, Dei S, Teodori E, Capperucci A. Novel functionalized organotellurides with enhanced thiol peroxidase catalytic activity. NEW J CHEM 2018. [DOI: 10.1039/c8nj00700d] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Novel tellurium-containing small molecules exhibited remarkable GPx-like activity. Their catalytic properties are strongly influenced by the nature of the β-substituent.
Collapse
Affiliation(s)
- Damiano Tanini
- Dipartimento di Chimica “Ugo Schiff”
- Università di Firenze
- 50019 Sesto Fiorentino
- Italy
| | - Anna Grechi
- Dipartimento di Chimica “Ugo Schiff”
- Università di Firenze
- 50019 Sesto Fiorentino
- Italy
| | - Lorenzo Ricci
- Dipartimento di Chimica “Ugo Schiff”
- Università di Firenze
- 50019 Sesto Fiorentino
- Italy
| | - Silvia Dei
- NEUROFARBA – Dipartimento di Neuroscienze
- Psicologia
- Area del Farmaco e Salute del Bambino
- Sezione Scienze Farmaceutiche e Nutraceutiche
- Università di Firenze
| | - Elisabetta Teodori
- NEUROFARBA – Dipartimento di Neuroscienze
- Psicologia
- Area del Farmaco e Salute del Bambino
- Sezione Scienze Farmaceutiche e Nutraceutiche
- Università di Firenze
| | - Antonella Capperucci
- Dipartimento di Chimica “Ugo Schiff”
- Università di Firenze
- 50019 Sesto Fiorentino
- Italy
| |
Collapse
|
35
|
Rani V, Boda M, Raju S, Naresh Patwari G, Singh HB, Butcher RJ. Synthesis and structure of arylselenium(ii) and aryltellurium(ii) cations based on rigid 5-tert-butyl-1,3-bis-(N-pentylbenzimidazol-2′-yl)benzenes. Dalton Trans 2018; 47:9114-9127. [DOI: 10.1039/c8dt01148f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The transmetalation reactions of mercury precursor, [Pentyl(N^C^N)HgCl] (19) with selenium and tellurium halides led to isolation of air stable NCN pincer based arylselenium(ii) and aryltellurium(ii) cations due to facile ionization of Se/Te halogen bond.
Collapse
Affiliation(s)
- Varsha Rani
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Manjusha Boda
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Saravanan Raju
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - G. Naresh Patwari
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Harkesh B. Singh
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | | |
Collapse
|
36
|
Barbosa NV, Nogueira CW, Nogara PA, de Bem AF, Aschner M, Rocha JBT. Organoselenium compounds as mimics of selenoproteins and thiol modifier agents. Metallomics 2017; 9:1703-1734. [PMID: 29168872 DOI: 10.1039/c7mt00083a] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Selenium is an essential trace element for animals and its role in the chemistry of life relies on a unique functional group: the selenol (-SeH) group. The selenol group participates in critical redox reactions. The antioxidant enzymes glutathione peroxidase (GPx) and thioredoxin reductase (TrxR) exemplify important selenoproteins. The selenol group shares several chemical properties with the thiol group (-SH), but it is much more reactive than the sulfur analogue. The substitution of S by Se has been exploited in organic synthesis for a long time, but in the last 4 decades the re-discovery of ebselen (2-phenyl-1,2-benzisoselenazol-3(2H)-one) and the demonstration that it has antioxidant and therapeutic properties has renovated interest in the field. The ability of ebselen to mimic the reaction catalyzed by GPx has been viewed as the most important molecular mechanism of action of this class of compound. The term GPx-like or thiol peroxidase-like reaction was previously coined in the field and it is now accepted as the most important chemical attribute of organoselenium compounds. Here, we will critically review the literature on the capacity of organoselenium compounds to mimic selenoproteins (particularly GPx) and discuss some of the bottlenecks in the field. Although the GPx-like activity of organoselenium compounds contributes to their pharmacological effects, the superestimation of the GPx-like activity has to be questioned. The ability of these compounds to oxidize the thiol groups of proteins (the thiol modifier effects of organoselenium compounds) and to spare selenoproteins from inactivation by soft-electrophiles (MeHg+, Hg2+, Cd2+, etc.) might be more relevant for the explanation of their pharmacological effects than their GPx-like activity. In our view, the exploitation of the thiol modifier properties of organoselenium compounds can be harnessed more rationally than the use of low mass molecular structures to mimic the activity of high mass macromolecules that have been shaped by millions to billions of years of evolution.
Collapse
Affiliation(s)
- Nilda V Barbosa
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| | - Cristina W Nogueira
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| | - Pablo A Nogara
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| | - Andreza F de Bem
- Departamento de Bioquímica, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, USA
| | - João B T Rocha
- Departamento de Bioquímica e Biologia Molecular, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
| |
Collapse
|
37
|
Bhaumik A, Verma RS, Tiwari B. Direct Construction of 2,3-Dihydroxy-2,3-diaryltetrahydrofurans via N-Heterocyclic Carbene/Base-Mediated Domino Reactions of Aromatic Aldehydes and Vinyl Selenone. Org Lett 2017; 19:444-447. [PMID: 28080069 DOI: 10.1021/acs.orglett.6b03501] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A one-pot, stereoselective construction of 2,3-dihydroxy-2,3-diaryltetrahydrofurans has been achieved via N-heterocyclic carbene (NHC)/base-mediated domino reactions of aldehydes and vinyl selenone. The products containing two contiguous quaternary hydroxyl functionalities among the three stereocenters are obtained advantageously as either acetals or ketals through the formation of five new chemical bonds in a single operation. This report constitutes an altogether different reactivity of vinyl selenone in comparison with the corresponding sulfones and phosphonates under NHC/base-mediated reactions.
Collapse
Affiliation(s)
- Atanu Bhaumik
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus , Raebareli Road, Lucknow 226014, India
| | - Ram Subhawan Verma
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus , Raebareli Road, Lucknow 226014, India
| | - Bhoopendra Tiwari
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research, SGPGIMS Campus , Raebareli Road, Lucknow 226014, India
| |
Collapse
|
38
|
Singh VP, Poon JF, Yan J, Lu X, Ott MK, Butcher RJ, Gates PJ, Engman L. Nitro-, Azo-, and Amino Derivatives of Ebselen: Synthesis, Structure, and Cytoprotective Effects. J Org Chem 2016; 82:313-321. [PMID: 27997177 DOI: 10.1021/acs.joc.6b02418] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Novel azo-bis-ebselen compounds 7 were prepared by reduction of 7-nitro-2-aryl-1,2-benzisoselenazol-3(2H)-ones 3 and 6 with sodium benzenetellurolate, NaTeC6H5, and by reaction of 2-bromo-3-nitrobenzamides with Na2Se2. The X-ray structure of 7b showed that the molecule, due to strong intramolecular secondary Se···N interactions, is completely planar. Azo-compounds 7 upon further reaction with NaTeC6H5 were reductively cleaved to provide 2 equiv of the corresponding aromatic amine. The weak Se-N bond was not stable enough to survive the reaction conditions, and diselenides 8 were isolated after workup. Whereas azo-bis-ebselens 7 were poor mimics of the glutathione peroxidase (GPx)-enzymes, nitroebselens 3, 6, and 11b and diselenides 8 were 3-6-fold more active than ebselen. Based on 77Se NMR spectroscopy, a catalytic cycle for diselenide 8b, involving aminoebselen 14, was proposed. As assessed by chemiluminescence measurements, the good GPx-mimics could reduce production of reactive oxygen species (ROS) in stimulated human mononuclear cells more efficiently than Trolox. No toxic effects of the compounds were seen in MC3T3-cells at 25 μM.
Collapse
Affiliation(s)
- Vijay P Singh
- Department of Chemistry-BMC, Uppsala University , Box 576, SE-751 23 Uppsala, Sweden
| | - Jia-Fei Poon
- Department of Chemistry-BMC, Uppsala University , Box 576, SE-751 23 Uppsala, Sweden
| | - Jiajie Yan
- Department of Chemistry-BMC, Uppsala University , Box 576, SE-751 23 Uppsala, Sweden
| | - Xi Lu
- Division of Applied Materials Science, Department of Engineering Sciences, Uppsala University , Uppsala, Sweden
| | - Marjam Karlsson Ott
- Division of Applied Materials Science, Department of Engineering Sciences, Uppsala University , Uppsala, Sweden
| | - Ray J Butcher
- Department of Chemistry, Howard University , Washington, D.C. 20059, United States
| | - Paul J Gates
- University of Bristol , School of Chemistry, Bristol, BS8 1TS, United Kingdom
| | - Lars Engman
- Department of Chemistry-BMC, Uppsala University , Box 576, SE-751 23 Uppsala, Sweden
| |
Collapse
|
39
|
Gordhan HM, Patrick SL, Swasy MI, Hackler AL, Anayee M, Golden JE, Morris JC, Whitehead DC. Evaluation of substituted ebselen derivatives as potential trypanocidal agents. Bioorg Med Chem Lett 2016; 27:537-541. [PMID: 28043795 DOI: 10.1016/j.bmcl.2016.12.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Revised: 12/05/2016] [Accepted: 12/07/2016] [Indexed: 10/20/2022]
Abstract
Human African trypanosomiasis is a disease of sub-Saharan Africa, where millions are at risk for the illness. The disease, commonly referred to as African sleeping sickness, is caused by an infection by the eukaryotic pathogen, Trypanosoma brucei. Previously, a target-based high throughput screen revealed ebselen (EbSe), and its sulfur analog, EbS, to be potent in vitro inhibitors of the T. brucei hexokinase 1 (TbHK1). These molecules also exhibited potent trypanocidal activity in vivo. In this manuscript, we synthesized a series of sixteen EbSe and EbS derivatives bearing electron-withdrawing carboxylic acid and methyl ester functional groups, and evaluated the influence of these substituents on the biological efficacy of the parent scaffold. With the exception of one methyl ester derivative, these modifications ablated or blunted the potent TbHK1 inhibition of the parent scaffold. Nonetheless, a few of the methyl ester derivatives still exhibited trypanocidal effects with single-digit micromolar or high nanomolar EC50 values.
Collapse
Affiliation(s)
- Heeren M Gordhan
- Department of Chemistry, 467 Hunter Laboratories, Clemson University, Clemson, SC 29634, USA
| | - Stephen L Patrick
- Eukaryotic Pathogens Innovation Center, Department of Genetics and Biochemistry, 249 Life Sciences Building, Clemson University, Clemson, SC 29634, USA
| | - Maria I Swasy
- Department of Chemistry, 467 Hunter Laboratories, Clemson University, Clemson, SC 29634, USA
| | - Amber L Hackler
- Eukaryotic Pathogens Innovation Center, Department of Genetics and Biochemistry, 249 Life Sciences Building, Clemson University, Clemson, SC 29634, USA
| | - Mark Anayee
- Department of Chemistry, 467 Hunter Laboratories, Clemson University, Clemson, SC 29634, USA
| | - Jennifer E Golden
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Wisconsin, 777 Highland Ave., Madison, WI 53705-2222, USA
| | - James C Morris
- Eukaryotic Pathogens Innovation Center, Department of Genetics and Biochemistry, 249 Life Sciences Building, Clemson University, Clemson, SC 29634, USA.
| | - Daniel C Whitehead
- Department of Chemistry, 467 Hunter Laboratories, Clemson University, Clemson, SC 29634, USA.
| |
Collapse
|
40
|
Balkrishna SJ, Kumar S, Kumar A, Panini P, Kumar S. Cinchona-Alkaloids Based Isoselenazolones: Synthesis and Their Catalytic Reactivity in Asymmetric Bromolactonization of Alkenoic Acid. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2016. [DOI: 10.1007/s40010-016-0306-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
|
41
|
McNeil NMR, Press DJ, Mayder DM, Garnica P, Doyle LM, Back TG. Enhanced Glutathione Peroxidase Activity of Water-Soluble and Polyethylene Glycol-Supported Selenides, Related Spirodioxyselenuranes, and Pincer Selenuranes. J Org Chem 2016; 81:7884-97. [DOI: 10.1021/acs.joc.6b01593] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Nicole M. R. McNeil
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - David J. Press
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Don M. Mayder
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Pablo Garnica
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Lisa M. Doyle
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Thomas G. Back
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| |
Collapse
|
42
|
Macegoniuk K, Grela E, Palus J, Rudzińska-Szostak E, Grabowiecka A, Biernat M, Berlicki Ł. 1,2-Benzisoselenazol-3(2H)-one Derivatives As a New Class of Bacterial Urease Inhibitors. J Med Chem 2016; 59:8125-33. [DOI: 10.1021/acs.jmedchem.6b00986] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Katarzyna Macegoniuk
- Department
of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Ewa Grela
- Department
of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Jerzy Palus
- Department
of Organic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Ewa Rudzińska-Szostak
- Department
of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Agnieszka Grabowiecka
- Department
of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Monika Biernat
- Department
of Microbiology, Medical University of Wrocław, Tytusa Chałubińskiego
4, 50-368 Wrocław, Poland
| | - Łukasz Berlicki
- Department
of Bioorganic Chemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| |
Collapse
|
43
|
Wang B, Wang Z, Chen H, Lu CJ, Li X. Synthesis and evaluation of 8-hydroxyquinolin derivatives substituted with (benzo[d][1,2]selenazol-3(2H)-one) as effective inhibitor of metal-induced Aβ aggregation and antioxidant. Bioorg Med Chem 2016; 24:4741-4749. [PMID: 27567080 DOI: 10.1016/j.bmc.2016.08.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 08/10/2016] [Accepted: 08/11/2016] [Indexed: 10/21/2022]
Abstract
A series of 8-hydroxyquinolin derivatives substituted with (benzo[d][1,2]selenazol-3(2H)-one) at the 2-position were synthesized and evaluated for treatment of Alzheimer's disease. In vitro assays demonstrated that most of the target compounds exhibit significant inhibition of Cu(II)-induced Aβ1-42 aggregation, rapid H2O2 scavenging and glutathione peroxidise (GPx)-like catalytic activity. Among these molecules, compound 9a is the most potent peroxide scavenger that possesses the ability to scavenge most H2O2 within 200-220min and possesses GPx-like activity (v0=106.0μM·min(-1)), enabling modulation of metal-induced Aβ aggregation.
Collapse
Affiliation(s)
- Bo Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Zhiren Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Hong Chen
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Chuan-Jun Lu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Xingshu Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
| |
Collapse
|
44
|
Press DJ, Back TG. The role of methoxy substituents in regulating the activity of selenides that serve as spirodioxyselenurane precursors and glutathione peroxidase mimetics. CAN J CHEM 2016. [DOI: 10.1139/cjc-2015-0329] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A series of o-(hydroxymethyl)phenyl selenides containing single or multiple methoxy substituents was synthesized, and the rate at which each compound catalyzed the oxidation of benzyl thiol to its disulfide with excess hydrogen peroxide was measured. This assay provided the means for comparing the relative abilities of the selenides to mimic the antioxidant selenoenzyme glutathione peroxidase. The mechanism for catalytic activity involves oxidation of the selenides to their corresponding selenoxides with hydrogen peroxide, cyclization to spirodioxyselenuranes, followed by reduction with two equivalents of thiol to regenerate the original selenide with concomitant disulfide formation. A single p-methoxy group on each aryl moiety afforded the highest catalytic activity, while methoxy groups in the meta position had little effect compared to the unsubstituted selenide, and o-methoxy groups suppressed activity. The installation of multiple methoxy groups on each aryl moiety provided no improvement. These results can be rationalized on the basis of dominating mesomeric and steric effects of the p- and o-substituents, respectively.
Collapse
Affiliation(s)
- David J. Press
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada
| | - Thomas G. Back
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, AB T2N 1N4, Canada
| |
Collapse
|
45
|
Kumar S, Yan J, Poon JF, Singh VP, Lu X, Karlsson Ott M, Engman L, Kumar S. Multifunctional Antioxidants: Regenerable Radical-Trapping and Hydroperoxide-Decomposing Ebselenols. Angew Chem Int Ed Engl 2016; 55:3729-33. [DOI: 10.1002/anie.201510947] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 01/11/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Shailesh Kumar
- Department of Chemistry; Indian Institute of Science Education and Research (IISER); Bhopal- 462066 India
| | - Jiajie Yan
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Jia-fei Poon
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Vijay P. Singh
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Xi Lu
- Division of Applied Materials Science; Department of Engineering Sciences; Uppsala University; Sweden
| | - Marjam Karlsson Ott
- Division of Applied Materials Science; Department of Engineering Sciences; Uppsala University; Sweden
| | - Lars Engman
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Sangit Kumar
- Department of Chemistry; Indian Institute of Science Education and Research (IISER); Bhopal- 462066 India
| |
Collapse
|
46
|
Kumar S, Yan J, Poon JF, Singh VP, Lu X, Karlsson Ott M, Engman L, Kumar S. Multifunctional Antioxidants: Regenerable Radical-Trapping and Hydroperoxide-Decomposing Ebselenols. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510947] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Shailesh Kumar
- Department of Chemistry; Indian Institute of Science Education and Research (IISER); Bhopal- 462066 India
| | - Jiajie Yan
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Jia-fei Poon
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Vijay P. Singh
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Xi Lu
- Division of Applied Materials Science; Department of Engineering Sciences; Uppsala University; Sweden
| | - Marjam Karlsson Ott
- Division of Applied Materials Science; Department of Engineering Sciences; Uppsala University; Sweden
| | - Lars Engman
- Department of Chemistry-BMC; Uppsala University; Box-576 75123 Uppsala Sweden
| | - Sangit Kumar
- Department of Chemistry; Indian Institute of Science Education and Research (IISER); Bhopal- 462066 India
| |
Collapse
|
47
|
Wang Z, Li W, Wang Y, Li X, Huang L, Li X. Design, synthesis and evaluation of clioquinol–ebselen hybrids as multi-target-directed ligands against Alzheimer's disease. RSC Adv 2016. [DOI: 10.1039/c5ra26797h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
A novel series of compounds obtained by fusing the metal-chelating agent clioquinol and the antioxidant ebselen were designed, synthesized and evaluated as multi-target-directed ligands against Alzheimer's disease (AD).
Collapse
Affiliation(s)
- Zhiren Wang
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou
- China
| | - Wenrui Li
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou
- China
| | - Yali Wang
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou
- China
| | - Xiruo Li
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou
- China
| | - Ling Huang
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou
- China
| | - Xingshu Li
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou
- China
| |
Collapse
|
48
|
Caracelli I, Zukerman-Schpector J, Haiduc I, Tiekink ERT. Main group metal lone-pair⋯π(arene) interactions: a new bonding mode for supramolecular associations. CrystEngComm 2016. [DOI: 10.1039/c6ce01460g] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
49
|
Patel S, Meenakshi M, Hodage AS, Verma A, Agrawal S, Yadav A, Kumar S. Synthesis and structural characterization of monomeric mercury(ii) selenolate complexes derived from 2-phenylbenzamide ligands. Dalton Trans 2016; 45:4030-40. [DOI: 10.1039/c5dt04356e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The present work describes the synthesis and structural characterization of mercury selenolate complexes derived from 2-phenylbenzamide ligands and their isolation in monomeric form for the first time.
Collapse
Affiliation(s)
- Saket Patel
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Meenakshi Meenakshi
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Ananda S. Hodage
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Ajay Verma
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Shailendra Agrawal
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Abhimanyu Yadav
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Sangit Kumar
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| |
Collapse
|
50
|
Singh VP, Poon JF, Butcher RJ, Lu X, Mestres G, Ott MK, Engman L. Effect of a Bromo Substituent on the Glutathione Peroxidase Activity of a Pyridoxine-like Diselenide. J Org Chem 2015; 80:7385-95. [DOI: 10.1021/acs.joc.5b00797] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Vijay P. Singh
- Department
of Chemistry−BMC, Uppsala University, Box 576, SE-751 23 Uppsala, Sweden
| | - Jia-fei Poon
- Department
of Chemistry−BMC, Uppsala University, Box 576, SE-751 23 Uppsala, Sweden
| | - Ray J. Butcher
- Department
of Chemistry, Howard University, Washington, D.C. 20059, United States
| | - Xi Lu
- Division
of Applied Materials Science, Department of Engineering Sciences, Uppsala University, SE-751 23 Uppsala, Sweden
| | - Gemma Mestres
- Division
of Applied Materials Science, Department of Engineering Sciences, Uppsala University, SE-751 23 Uppsala, Sweden
| | - Marjam Karlsson Ott
- Division
of Applied Materials Science, Department of Engineering Sciences, Uppsala University, SE-751 23 Uppsala, Sweden
| | - Lars Engman
- Department
of Chemistry−BMC, Uppsala University, Box 576, SE-751 23 Uppsala, Sweden
| |
Collapse
|