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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.
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Triple-Click Chemistry of Selenium Dihalides: Catalytic Regioselective and Highly Efficient Synthesis of Bis-1,2,3-Triazole Derivatives of 9-Selenabicyclo[3.3.1]nonane. Catalysts 2022. [DOI: 10.3390/catal12091032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The catalytic regioselective and highly efficient synthesis of bis-1,2,3-triazole derivatives of 9-selenabicyclo[3.3.1]nonane was developed. The 1,3-dipolar cycloaddition reaction of 2,6-diazido-9-selenabicyclo[3.3.1]nonane with a variety of terminal acetylenes catalyzed by a copper acetate/sodium ascorbate system proceeded in a regioselective fashion, affording 2,6-bis(4-organyl-1,2,3-triazole)-9-selenabicyclo[3.3.1]nonanes in high yields (93–98%). The reaction of 2,6-diazido-9-selenabicyclo[3.3.1]nonane with dimethyl and diethyl acetylenedicarboxylates was carried out as thermal 1,3-dipolar Huisgen cycloaddition giving the corresponding 4,5-disubstituted 1,2,3-triazole derivatives of 9-selenabicyclo[3.3.1]nonane in high yields. The obtained products are potentially bioactive compounds and first representatives of selenium heterocycles combined with two 1,2,3-triazole moieties. 2.6-Diazido-9-selenabicyclo[3.3.1]nonane was obtained in quantitative yield via the reaction of sodium azide with 2,6-dibromo-9-selenabicyclo[3.3.1]nonane at room temperature. The latter compound was synthesized by stereoselective transannular addition of selenium dibromide to cis, cis-1,5-cyclooctadiene.
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Regioselective Synthesis of Novel Functionalized Dihydro-1,4-thiaselenin-2-ylsufanyl Derivatives under Phase Transfer Catalysis. Catalysts 2022. [DOI: 10.3390/catal12080889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The regioselective one-pot synthesis of novel functionalized 2,3-dihydro-1,4-thiaselenin-2-ylsufanyl derivatives in high yields based on 2-bromomethyl-1,3-thiaselenole and activated alkenes was developed under phase transfer catalysis conditions. The reactions proceed under mild conditions at room temperature in a regioselective manner with the addition of sodium dihydro-1,4-thiaselenin-2-ylthiolate exclusively at the terminal carbon atom of the double bond of vinyl methyl ketone, alkylacrylates, acrylamide, acrylonitrile, divinyl sulfone, and divinyl sulfoxide. The sodium dihydro-1,4-thiaselenin-2-ylthiolate was generated from 2-[amino(imino)methyl]sulfanyl-2,3-dihydro-1,4-thiaselenine hydrobromide. The latter compound was obtained by the reaction of 2-bromomethyl-1,3-thiaselenole with thiourea, which was accompanied by a rearrangement with ring expansion to the six-membered heterocycle. The obtained 2,3-dihydro-1,4-thiaselenin-2-ylsufanyl derivatives are a novel family of compounds with putative biological activity. The addition products of sodium dihydro-1,4-thiaselenin-2-ylthiolate at one double bond of divinyl sulfone and divinyl sulfoxide, containing vinylsulfonyl and vinylsulfinyl groups, are capable of further addition reactions. A possibility to obtain corresponding alcohol derivatives was shown in the reaction with vinyl methyl ketone.
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Selenium-Containing Polysaccharides—Structural Diversity, Biosynthesis, Chemical Modifications and Biological Activity. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11083717] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Selenosugars are a group of sugar derivatives of great structural diversity (e.g., molar masses, selenium oxidation state, and selenium binding), obtained as a result of biosynthesis, chemical modification of natural compounds, or chemical synthesis. Seleno-monosaccharides and disaccharides are known to be non-toxic products of the natural metabolism of selenium compounds in mammals. In the case of the selenium-containing polysaccharides of natural origin, their formation is also postulated as a form of detoxification of excess selenium in microorganisms, mushroom, and plants. The valency of selenium in selenium-containing polysaccharides can be: 0 (encapsulated nano-selenium), IV (selenites of polysaccharides), or II (selenoglycosides or selenium built into the sugar ring to replace oxygen). The great interest in Se-polysaccharides results from the expected synergy between selenium and polysaccharides. Several plant- and mushroom-derived polysaccharides are potent macromolecules with antitumor, immunomodulatory, antioxidant, and other biological properties. Selenium, a trace element of fundamental importance to human health, has been shown to possess several analogous functions. The mechanism by which selenium exerts anticancer and immunomodulatory activity differs from that of polysaccharide fractions, but a similar pharmacological effect suggests a possible synergy of these two agents. Various functions of Se-polysaccharides have been explored, including antitumor, immune-enhancement, antioxidant, antidiabetic, anti-inflammatory, hepatoprotective, and neuroprotective activities. Due to being non-toxic or much less toxic than inorganic selenium compounds, Se-polysaccharides are potential dietary supplements that could be used, e.g., in chemoprevention.
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Yao Y, Wang C, Ma Y, Zhang J, Sun D, Chen L, Huang L, Wu G. Copper‐Catalyzed Decarboxylative Alkylselenation of Propiolic Acids with Se Powder and Epoxides. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001510] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Yujing Yao
- School of Pharmaceutical Sciences Wenzhou Medical University Wenzhou 325035 People's Republic of China
| | - Caihong Wang
- School of Pharmaceutical Sciences Wenzhou Medical University Wenzhou 325035 People's Republic of China
| | - Yunfei Ma
- School of Pharmaceutical Sciences Wenzhou Medical University Wenzhou 325035 People's Republic of China
| | - Jintao Zhang
- School of Pharmaceutical Sciences Wenzhou Medical University Wenzhou 325035 People's Republic of China
| | - Dong Sun
- School of Pharmaceutical Sciences Wenzhou Medical University Wenzhou 325035 People's Republic of China
| | - Luya Chen
- School of Pharmaceutical Sciences Wenzhou Medical University Wenzhou 325035 People's Republic of China
| | - Lehao Huang
- School of Pharmaceutical Sciences Wenzhou Medical University Wenzhou 325035 People's Republic of China
| | - Ge Wu
- School of Pharmaceutical Sciences Wenzhou Medical University Wenzhou 325035 People's Republic of China
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 People's Republic of China
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources Guangxi Normal University Guilin 541004 People's Republic of China
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Gobouri AAH. Synthetic access of new 6-purineselenyl and 8-(1,3,4-thiadiazolyl)-7-benzyl-1, 3-dimethyl-1H-purine-2,6-(3H,7H)-dione derivatives. PHOSPHORUS SULFUR 2020. [DOI: 10.1080/10426507.2020.1756290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Adil A. H. Gobouri
- Department of Chemistry, Faculty of Science, Taif University, Taif, Kingdom of Saudi Arabia (KSA)
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Sonawane AD, Sonawane RA, Ninomiya M, Koketsu M. Synthesis of Seleno‐Heterocycles
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Electrophilic/Radical Cyclization of Alkyne Containing Heteroatoms. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000490] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Amol D. Sonawane
- Department of Chemistry and Biomolecular ScienceFaculty of EngineeringGifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Rohini A. Sonawane
- Department of Chemistry and Biomolecular ScienceFaculty of EngineeringGifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Masayuki Ninomiya
- Department of Chemistry and Biomolecular ScienceFaculty of EngineeringGifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Mamoru Koketsu
- Department of Chemistry and Biomolecular ScienceFaculty of EngineeringGifu University 1-1 Yanagido Gifu 501-1193 Japan
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Gandin V, Khalkar P, Braude J, Fernandes AP. Organic selenium compounds as potential chemotherapeutic agents for improved cancer treatment. Free Radic Biol Med 2018; 127:80-97. [PMID: 29746900 DOI: 10.1016/j.freeradbiomed.2018.05.001] [Citation(s) in RCA: 182] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/12/2018] [Accepted: 05/01/2018] [Indexed: 12/16/2022]
Abstract
Selenium(Se)-containing compounds have attracted a growing interest as anticancer agents over recent decades, with mounting reports demonstrating their high efficacy and selectivity against cancer cells. Typically, Se compounds exert their cytotoxic effects by acting as pro-oxidants that alter cellular redox homeostasis. However, the precise intracellular targets, signalling pathways affected and mechanisms of cell death engaged following treatment vary with the chemical properties of the selenocompound and its metabolites, as well as the cancer model that is used. Naturally occurring organic Se compounds, besides encompassing a significant antitumor activity with an apparent ability to prevent metastasis, also seem to have fewer side effects and less systemic effects as reported for many inorganic Se compounds. On this basis, many novel organoselenium compounds have also been synthesized and examined as potential chemotherapeutic agents. This review aims to summarize the most well studied natural and synthetic organoselenium compounds and provide the most recent developments in our understanding of the molecular mechanisms that underlie their potential anticancer effects.
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Affiliation(s)
- Valentina Gandin
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo 5, 35131 Padova, Italy
| | - Prajakta Khalkar
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics (MBB), Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Jeremy Braude
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo 5, 35131 Padova, Italy
| | - Aristi P Fernandes
- Division of Biochemistry, Department of Medical Biochemistry and Biophysics (MBB), Karolinska Institutet, SE-171 77 Stockholm, Sweden.
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Elsherbini M, Hamama WS, Zoorob HH. Recent advances in the chemistry of selenium-containing heterocycles: Six-membered ring systems. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.09.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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10
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Gobouri AA. Organic selenium compounds: Synthesis and reactions of some new 7-alkyl-8-selenotheophyllines. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2015.1119137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Adil A. Gobouri
- Department of Chemistry, Faculty of Science, Taif University, Taif, Saudi Arabia
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Amosova SV, Penzik MV, Filippov AS, Albanov AI, Potapov VA. New reaction accompanied with rearrangement of 2-(bromomethyl)-1,3-thiaselenol with furan-2- and thiophene-2-carboxylic acids. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2014. [DOI: 10.1134/s1070428014110323] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Zhu YX, Zhao ZJ, Zhang Y, Su Q, Peng ZH, An DL. Synthesis of Bis(arylethynyl) Selenides by One-Pot Protocol. HETEROATOM CHEMISTRY 2014. [DOI: 10.1002/hc.21208] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yun-Xing Zhu
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering, Hunan University; Changsha 410082 People's Republic of China
| | - Zi-Jian Zhao
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering, Hunan University; Changsha 410082 People's Republic of China
| | - Yang Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering, Hunan University; Changsha 410082 People's Republic of China
| | - Qiong Su
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering, Hunan University; Changsha 410082 People's Republic of China
| | - Zhi-Hong Peng
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering, Hunan University; Changsha 410082 People's Republic of China
| | - De-Lie An
- State Key Laboratory of Chemo/Biosensing and Chemometrics; College of Chemistry and Chemical Engineering, Hunan University; Changsha 410082 People's Republic of China
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Refat MS, Abdel-Hafez SH. Charge-transfer complex of 4-cyano-5,6-diphenylpyridazine-3(2)selenone with picric acid: Infrared, Raman, spectrophotometric, and photostability studies. RUSS J GEN CHEM+ 2014. [DOI: 10.1134/s1070363214020315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Xie Y, Yang P, Chen X. One-Pot Synthesis of 5-Arylamino-1,3,4-Selenadiazol-2(3H)-Ones from Arylisoselenocyanates. JOURNAL OF CHEMICAL RESEARCH 2012. [DOI: 10.3184/174751912x13377840596361] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A one-pot reaction of arylisoselenocyanates, hydrazine and bis(trichloromethyl) carbonate, in the presence of a base provides an efficient route for the synthesis of 5-arylamino-1,3,4-selenadiazol-2(3H)-ones in good to excellent yields. A plausible mechanism is proposed for the reaction.
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Affiliation(s)
- Yuanyuan Xie
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Ping Yang
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xiaodong Chen
- Key Laboratory for Green Pharmaceutical Technologies and Related Equipment of Ministry of Education, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, P. R. China
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15
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Ninomiya M, Garud DR, Koketsu M. Biologically significant selenium-containing heterocycles. Coord Chem Rev 2011. [DOI: 10.1016/j.ccr.2011.07.009] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Reactions of nitroxides. Part X: Antifungal activity of selected sulfur and selenium derivatives of 2,2,6,6-tetramethylpiperidine. Bioorg Med Chem Lett 2011; 21:514-6. [DOI: 10.1016/j.bmcl.2010.10.092] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2010] [Revised: 10/18/2010] [Accepted: 10/19/2010] [Indexed: 11/18/2022]
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17
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Plano D, Moreno E, Font M, Encío I, Palop JA, Sanmartín C. Synthesis and in vitro Anticancer Activities of some Selenadiazole Derivatives. Arch Pharm (Weinheim) 2010; 343:680-91. [PMID: 21110339 DOI: 10.1002/ardp.201000014] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Daniel Plano
- Departamento de Química Orgánica y Farmacéutica, University of Navarra, Pamplona, Spain
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18
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Mitamura T, Ogawa A. Palladium-catalyzed alkynylselenation of acetylenedicarboxylates leading to enyne selenides and application to synthesis of multisubstituted aryl selenides. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.04.125] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Zakrzewski J, Krawczyk M. Reactions of nitroxides, part 7: Synthesis of novel nitroxide selenoureas. HETEROATOM CHEMISTRY 2008. [DOI: 10.1002/hc.20454] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Koketsu M, Kanoh K, Ando H, Ishihara H. A facile synthesis of 2-amino-1,3-selenazole by reaction ofN,N-unsubstituted selenourea with ketone. HETEROATOM CHEMISTRY 2006. [DOI: 10.1002/hc.20180] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ahn HJ, Koketsu M, Yang EM, Kim YM, Ishihara H, Yang HO. 2-(4-methylphenyl)-1,3-selenazol-4-one induces apoptosis by different mechanisms in SKOV3 and HL 60 cells. J Cell Biochem 2006; 99:807-15. [PMID: 16676363 DOI: 10.1002/jcb.20973] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We examined the ability of the synthetic selenium compound, 2-(4-methylphenyl)-1,3-selenazol-4-one (hereafter designated 3a), to induce apoptosis in a human ovarian cancer cell line (SKOV3) and a human leukemia cell line (HL-60). Flow cytometry showed that 3a treatment induced apoptosis in both cell lines to degrees comparable to that of the positive control, paclitaxel. Apoptosis was measured by PS externalization, DNA fragmentation and decreased mitochondrial membrane potential (MMP). However, analysis of the mechanism of action revealed differences between the responses of the two cell lines. Treatment with 3a arrested the cell cycle and induced caspase-3 activation in HL-60 cells, but not in SKOV3 cells. In contrast, 3a treatment induced apoptosis through translocation of AIF, a novel pro-apoptotic protein, in SKOV3 cells, but not in HL-60 cells. Collectively, our data demonstrated that 3a induced apoptosis in both cell lines, but via different action mechanisms.
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Affiliation(s)
- Hak Jun Ahn
- Natural Products Research Division, Korea Institute of Science and Technology, Gangneung Institute, Daejeon-dong, Gangneung, Gangwon-do, 210-340, Republic of Korea
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Koketsu M, Mizutani K, Ogawa T, Takahashi A, Ishihara H. Synthesis of 3-Acyl-1-alkyl-2-alkylseleno-1-cyclobutene Using Alkyneselenolate. J Org Chem 2004; 69:8938-41. [PMID: 15575778 DOI: 10.1021/jo048787p] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of lithium alkyneselenolate with alpha,beta-unsaturated ketone and then alkyl or acyl halide afforded 3-acyl-1-alkyl-2-alkylseleno-1-cyclobutene. The structure of the cyclobutene was elucidated by IR, MS, (1)H, (13)C, and (77)Se NMR, COSY, HMQC, and HMBC data and X-ray analysis.
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Affiliation(s)
- Mamoru Koketsu
- Division of Instrumental Analysis, Life Science Research Center, Gifu University, Gifu 501-1193, Japan.
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Koketsu M, Taura M, Ishihara H. Synthesis and characterization of 2-iminoperhydro-1,3-selenazin-4-ones by reaction ofN,N'-disubstituted selenoureas with acryloyl chloride. J Heterocycl Chem 2004. [DOI: 10.1002/jhet.5570410522] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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24
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Fernández-Bolaños JG, López Ó, Ulgar V, Maya I, Fuentes J. Synthesis of O -unprotected glycosyl selenoureas. A new access to bicyclic sugar isoureas. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.03.143] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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