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Sonego JM, de Diego SI, Szajnman SH, Gallo-Rodriguez C, Rodriguez JB. Organoselenium Compounds: Chemistry and Applications in Organic Synthesis. Chemistry 2023; 29:e202300030. [PMID: 37378970 DOI: 10.1002/chem.202300030] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 06/18/2023] [Accepted: 06/28/2023] [Indexed: 06/29/2023]
Abstract
Selenium, originally described as a toxin, turns out to be a crucial trace element for life that appears as selenocysteine and its dimer, selenocystine. From the point of view of drug developments, selenium-containing drugs are isosteres of sulfur and oxygen with the advantage that the presence of the selenium atom confers antioxidant properties and high lipophilicity, which would increase cell membrane permeation leading to better oral bioavailability. In this article, we have focused on the relevant features of the selenium atom, above all, the corresponding synthetic approaches to access a variety of organoselenium molecules along with the proposed reaction mechanisms. The preparation and biological properties of selenosugars, including selenoglycosides, selenonucleosides, selenopeptides, and other selenium-containing compounds will be treated. We have attempted to condense the most important aspects and interesting examples of the chemistry of selenium into a single article.
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Affiliation(s)
- Juan M Sonego
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
| | - Sheila I de Diego
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
| | - Sergio H Szajnman
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
| | - Carola Gallo-Rodriguez
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EHA, Buenos Aires, Argentina
| | - Juan B Rodriguez
- Departamento de Química Orgánica Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Unidad de Microanálisis y Métodos Físicos en Química Orgánica (UMYMFOR), C1428EHA, Buenos Aires, Argentina
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Abstract
Selenoesters are compounds of great synthetic relevance since they can be used in several types of chemical transformations and mainly due to their great capacity in the formation of acyl radicals. Therefore, the scientific community has been developing several methods for the synthesis of this class of molecules. This review will address the synthesis of these compounds from different starting materials, such as carboxylic acids derivatives (acid chlorides and anhydrides), aldehydes, selenoacetylenes and miscellaneous methods.
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Affiliation(s)
- Lucas L Baldassari
- Instituto de Química, Universidade Federal do Rio Grande do Sul-UFRGS, 9500 Bento Gonçalves, Porto Alegre, 91501-970, RS, Brazil
| | - Diogo S Lüdtke
- Instituto de Química, Universidade Federal do Rio Grande do Sul-UFRGS, 9500 Bento Gonçalves, Porto Alegre, 91501-970, RS, Brazil
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3
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Wang Z, Hui C. Contemporary advancements in the semi-synthesis of bioactive terpenoids and steroids. Org Biomol Chem 2021; 19:3791-3812. [PMID: 33949606 DOI: 10.1039/d1ob00448d] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Many natural products have intriguing biological properties that arise from their fascinating chemical structures. However, the intrinsic complexity of the structural skeleton and the reactive functional groups on natural products pose tremendous challenges to chemical syntheses. Semi-synthesis uses chemical compounds isolated from natural sources as the starting materials to produce other novel compounds with distinct chemical and medicinal properties. In particular, advancements in various types of sp3 C-H bond functionalization reactions and skeletal rearrangement methods have contributed to the re-emergence of semi-synthesis as an efficient approach for the synthesis of structurally complex bioactive natural products. Here, we begin with a brief discussion of several bioactive natural products that were obtained via a semi-synthetic approach between 2008 and 2015 and we then discuss in-depth contemporary advancements in the semi-synthesis of bioactive terpenoids and steroids reported during 2016-2020.
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Affiliation(s)
- Zhuo Wang
- Southern University of Science and Technology, School of Medicine, Shenzhen, 518055, People's Republic of China.
| | - Chunngai Hui
- Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China
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Fernandes RA, Pathare RS, Gorve DA. Advances in Total Synthesis of Some 2,3,5-Trisubstituted Tetrahydrofuran Natural Products. Chem Asian J 2020; 15:2815-2837. [PMID: 32702201 DOI: 10.1002/asia.202000753] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 07/21/2020] [Indexed: 11/06/2022]
Abstract
2,3,5-Trisubstituted tetrahydrofuran moiety is ubiquitous in natural products. These have served as appealing candidates for total synthesis due to their varied bio- and pharmaceutical activities. This tutorial review delineates the ingenious efforts by many researchers in the total synthesis of selected natural products based on a common 2,3,5-trisubstituted tetrahydrofuran core structure. Many of the syntheses display nuanced interplay between new methods and the ingenuity of planned strategies achieved through catalysis or cascade chemistry. In some cases, the chiron approach has come quite handy, wherein the structural features and the stereochemistry in select molecules could map well with naturally available starting materials. This compilation also aims to enhance the diversity space based on these natural products and further interest in sustainable total synthesis.
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Affiliation(s)
- Rodney A Fernandes
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, Maharashtra, India
| | - Ramdas S Pathare
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, Maharashtra, India
| | - Dnyaneshwar A Gorve
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, Maharashtra, India
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Movassagh B, Shamsipoor M, Joshaghani M. Reductive Cleavage of the Se–Se Bond in the Presence of a Zn/AlCl3 System: Synthesis of Selenol Esters. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823404323000549] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Selenol esters were prepared in good yields by reacting diselenides with carboxylic acid anhydrides in dry acetonitrile in the presence of a Zn/AlCl3 system.
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Affiliation(s)
- Barahman Movassagh
- Department of Chemistry, K.N. Toosi University of Technology, PO Box 15875-4416, Tehran Iran
| | - Mojgan Shamsipoor
- Department of Chemistry, K.N. Toosi University of Technology, PO Box 15875-4416, Tehran Iran
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Sato S, Fukuda Y, Ogura Y, Kwon E, Kuwahara S. Synthesis of the Epimeric Secosteroids Strophasterols A and B. Angew Chem Int Ed Engl 2017; 56:10911-10914. [DOI: 10.1002/anie.201706086] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Shuntaro Sato
- Graduate School of Agricultural Science; Tohoku University; 468-1 Aramaki-Aza-Aoba, Aoba-ku Sendai 980-0845 Japan
| | - Yuki Fukuda
- Graduate School of Agricultural Science; Tohoku University; 468-1 Aramaki-Aza-Aoba, Aoba-ku Sendai 980-0845 Japan
| | - Yusuke Ogura
- Graduate School of Agricultural Science; Tohoku University; 468-1 Aramaki-Aza-Aoba, Aoba-ku Sendai 980-0845 Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules; Graduate School of Science; Tohoku University; Sendai 980-8578 Japan
| | - Shigefumi Kuwahara
- Graduate School of Agricultural Science; Tohoku University; 468-1 Aramaki-Aza-Aoba, Aoba-ku Sendai 980-0845 Japan
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7
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Sato S, Fukuda Y, Ogura Y, Kwon E, Kuwahara S. Synthesis of the Epimeric Secosteroids Strophasterols A and B. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shuntaro Sato
- Graduate School of Agricultural Science; Tohoku University; 468-1 Aramaki-Aza-Aoba, Aoba-ku Sendai 980-0845 Japan
| | - Yuki Fukuda
- Graduate School of Agricultural Science; Tohoku University; 468-1 Aramaki-Aza-Aoba, Aoba-ku Sendai 980-0845 Japan
| | - Yusuke Ogura
- Graduate School of Agricultural Science; Tohoku University; 468-1 Aramaki-Aza-Aoba, Aoba-ku Sendai 980-0845 Japan
| | - Eunsang Kwon
- Research and Analytical Center for Giant Molecules; Graduate School of Science; Tohoku University; Sendai 980-8578 Japan
| | - Shigefumi Kuwahara
- Graduate School of Agricultural Science; Tohoku University; 468-1 Aramaki-Aza-Aoba, Aoba-ku Sendai 980-0845 Japan
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Temperini A, Piazzolla F, Minuti L, Curini M, Siciliano C. General, Mild, and Metal-Free Synthesis of Phenyl Selenoesters from Anhydrides and Their Use in Peptide Synthesis. J Org Chem 2017; 82:4588-4603. [PMID: 28414443 DOI: 10.1021/acs.joc.7b00173] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A mild, practical, and simple procedure for phenyl selenoesters synthesis from several anhydrides and diphenyl diselenide was developed. This transition-metal-free method provides a straightforward entry to storable Fmoc-amino acid selenoesters which are effective chemoselective acylating reagents. An application to oligopeptide synthesis was illustrated.
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Affiliation(s)
- Andrea Temperini
- Dipartimento di Scienze Farmaceutiche, Università di Perugia , Via del Liceo 1, 06123 Perugia, Italy
| | - Francesca Piazzolla
- Dipartimento di Scienze Farmaceutiche, Università di Perugia , Via del Liceo 1, 06123 Perugia, Italy
| | - Lucio Minuti
- Dipartimento di Chimica, Biologia e Biotecnologie, Università di Perugia , Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Massimo Curini
- Dipartimento di Scienze Farmaceutiche, Università di Perugia , Via del Liceo 1, 06123 Perugia, Italy
| | - Carlo Siciliano
- Dipartimento di Farmacia e Scienze della Salute e della Nutrizione, Università della Calabria, Edificio Polifunzionale , 87030 Arcavacata di Rende, Cosenza, Italy
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9
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Schwartz Radatz C, Rampon DS, Balaguez RA, Alves D, Schneider PH. Synthesis of 2-Substituted 1,3-Benzoselenazoles from Carboxylic Acids Promoted by Tributylphosphine. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402808] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Jiang J, Wang W, Wang X, Zhu X, Li Z. Investigation on the Se-Acylation withN-Acylbenzotriazoles. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.540605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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12
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Bennasar ML, Roca T. 3-Indolylacyl Radical Cyclizations upon Pyridines and Tetrahydropyridines: Access to Ergoline-Related Indole [cd]-fused Isoquinolines. J Org Chem 2011; 76:4213-8. [DOI: 10.1021/jo2006279] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M.-Lluïsa Bennasar
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Tomàs Roca
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
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Rampon DS, Rodembusch FS, Schneider JMFM, Bechtold IH, Gonçalves PFB, Merlo AA, Schneider PH. Novel selenoesters fluorescent liquid crystalline exhibiting a rich phase polymorphism. ACTA ACUST UNITED AC 2010. [DOI: 10.1039/b917366h] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Bennasar ML, Zulaica E, Solé D, Roca T, García-Díaz D, Alonso S. Total Synthesis of the Bridged Indole Alkaloid Apparicine. J Org Chem 2009; 74:8359-68. [DOI: 10.1021/jo901986v] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M.-Lluïsa Bennasar
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Ester Zulaica
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Daniel Solé
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Tomàs Roca
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Davinia García-Díaz
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Sandra Alonso
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
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Bennasar ML, Roca T, García-Díaz D. A New Acyl Radical-based Route to the 1,5-Methanoazocino[4,3-b]indole Framework of Uleine and Strychnos Alkaloids. J Org Chem 2008; 73:9033-9. [DOI: 10.1021/jo801998h] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M.-Lluïsa Bennasar
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Tomàs Roca
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
| | - Davinia García-Díaz
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institut de Biomedicina (IBUB), University of Barcelona, Barcelona 08028, Spain
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Chatgilialoglu C, Ferreri C, Lucarini M, Venturini A, Zavitsas AA. 5-exo-trig Versus 6-endo-trig Cyclization of Alk-5-enoyl Radicals: The Role of One-Carbon Ring Expansion. Chemistry 2006. [DOI: 10.1002/chem.19970030309] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Stereoselective construction of the azabicyclic core applicable to the biologically important polyguanidinium alkaloids batzelladine A and D using a free radical cyclization. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)01340-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Evans PA, Manangan T. Stereoselective synthesis of cyclic ethers using vinylogous sulfonates as radical acceptors: effect of E/Z geometry and temperature on diastereoselectivity. J Org Chem 2000; 65:4523-8. [PMID: 10959853 DOI: 10.1021/jo991970b] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Treatment of the E-vinylogous sulfonates 1a-g with tris(trimethylsilyl)silane and triethylborane, in the presence of air, furnished the cyclic ethers 2/3a-g with good to excellent diastereoselectivity favoring the cis-isomer 2. This study demonstrated the level of stereocontrol in a 6-exo radical cyclization and may be attributed to the type of radical intermediate. Hence, the modest selectivity obtained for the cyclization of 1e may be a function of the acyl radical geometry (sp2) and high inversion barrier (29 kcal/mol) as compared to the alkyl (1 kcal/mol) and vinyl (2.9 kcal/mol) radicals. This is consistent with the acyl radical cyclization having an earlier transition state than the corresponding alkyl and vinyl radicals. The modest diastereoselectivity can be improved dramatically using the Z-vinylogous sulfonate (> or =34:1; R = Ph) to promote kinetic trapping of the s-trans rotamer I and III, respectively (Figure 1). The 5-exo alkyl radical cyclization reaction under nonreductive Keck-allylation conditions was also examined, in which 8 was formed in 91% overall yield. This transformation provides a convenient method for in situ homologation and should be applicable to target directed synthesis.
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Affiliation(s)
- P A Evans
- Department of Chemistry and Biochemistry, University of Delaware, Newark, 19716, USA.
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Zhong P, Xiong ZX, Huang X. A Stereoselective Synthetic Route to (E)-α,β-Unsaturated Selenoesters. SYNTHETIC COMMUN 2000. [DOI: 10.1080/00397910008087101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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21
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Affiliation(s)
- P. Andrew Evans
- Brown Laboratory, Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA, Fax: (+1) 302‐831‐6335
| | - V. Srinivasa Murthy
- Brown Laboratory, Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA, Fax: (+1) 302‐831‐6335
| | - Jamie D. Roseman
- Brown Laboratory, Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA, Fax: (+1) 302‐831‐6335
| | - Arnold L. Rheingold
- Brown Laboratory, Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA, Fax: (+1) 302‐831‐6335
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Huang X, Liang CG. Synthesis of α, β-Unsaturated Selenoesters by the Reaction of Acylzirconene Chlorides with ArSeBr. JOURNAL OF CHEMICAL RESEARCH 1999. [DOI: 10.1177/174751989902301024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
α, β-Unsaturated selenoesters are prepared in good yields by the reaction of ArSeBr with acylzirconene chlorides.
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Affiliation(s)
- Xian Huang
- Department of Chemistry, Zhejiang University, (Campus Xixi), 34 Tianmushan Lu, Hangzhou, 310028, P. R. China
| | - Chun-Gen Liang
- Department of Chemistry, Zhejiang University, (Campus Xixi), 34 Tianmushan Lu, Hangzhou, 310028, P. R. China
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24
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Stereoselective synthesis of the 2,6-disubstituted tetrahydropyran-3-ol of the potent antitumor agent mucocin via an acyl radical cyclization. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)01147-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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25
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Evans PA, Roseman JD, Garber LT. An Iterative Approach to Biologically Important Fused Polycyclic Ethers via Acyl Radical Cyclizations. J Org Chem 1996. [DOI: 10.1021/jo9605861] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- P. Andrew Evans
- Lammot du Pont Laboratory, Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716
| | - Jamie D. Roseman
- Lammot du Pont Laboratory, Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716
| | - Lisa T. Garber
- Lammot du Pont Laboratory, Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716
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26
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Crich D, Yao Q. Generation of Acyl Radicals from Thiolesters by Intramolecular Homolytic Substitution at Sulfur. J Org Chem 1996. [DOI: 10.1021/jo960115e] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David Crich
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061
| | - Qingwei Yao
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061
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Crich D, Jiao XY, Yao Q, Harwood JS. Radical Clock Reactions under Pseudo-First-Order Conditions Using Catalytic Quantities of Diphenyl Diselenide. A 77Se- and 119Sn-NMR Study of the Reaction of Tributylstannane and Diphenyl Diselenide. J Org Chem 1996. [DOI: 10.1021/jo950857s] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David Crich
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor Street, Room 4500, Chicago, Illinois 60607-7061
| | - Xian-Yun Jiao
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor Street, Room 4500, Chicago, Illinois 60607-7061
| | - Qingwei Yao
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor Street, Room 4500, Chicago, Illinois 60607-7061
| | - John S. Harwood
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor Street, Room 4500, Chicago, Illinois 60607-7061
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Evans PA, Roseman JD. Stereoselective Construction of Cyclic Ethers via Intramolecular Acyl Radical Cyclizations: A Practical Solution to Decarbonylation. J Org Chem 1996. [DOI: 10.1021/jo960175k] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- P. Andrew Evans
- Lammot du Pont Laboratory, Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716
| | - Jamie D. Roseman
- Lammot du Pont Laboratory, Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716
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29
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Nájera C, Yus M. ACYL MAIN GROUP METAL AND METALLOID DERIVATIVES IN ORGANIC SYNTHESIS. A REVIEW. ORG PREP PROCED INT 1995. [DOI: 10.1080/00304949509458476] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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Evans P, Roseman JD. Stereoselective synthesis of cis-2,5-disubstituted tetrahydrofuran-3-ones via an acyl radical cyclization. Tetrahedron Lett 1995. [DOI: 10.1016/0040-4039(94)02162-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Batty D, Crich D. An acyl radical initiated tandem 7-endo/5-exo radical cyclization approach to enantiomerically pure bicyclo[5.3.0]decan-2-ones. Tetrahedron Lett 1992. [DOI: 10.1016/s0040-4039(00)91564-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Batty D, Crich D. Acyl radical cyclizations in synthesis. Part 5. Further tandem processes: formation of an α-methylenecyclohexanone by a cyclization–fragmentation hydrogen-abstraction sequence. ACTA ACUST UNITED AC 1992. [DOI: 10.1039/p19920003205] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Batty D, Crich D, Fortt SM. Acyl radical cyclizations in synthesis. Part 3. Synthesis of (±)-trans-3,5-bis-(t-butyldimethylsiloxy)-2-methylenecyclohexanone, an ‘A’ ring model for 1α, 25-dihydroxyvitamin D3. ACTA ACUST UNITED AC 1990. [DOI: 10.1039/p19900002875] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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