51
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Keiko NA, Vchislo NV. Synthesis of Diheteroatomic Five-Membered Heterocyclic Compounds from α,β-Unsaturated Aldehydes. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600227] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- N. A. Keiko
- A. E. Favorsky Irkutsk Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; 1 Favorsky Street 664033 Irkutsk Russian Federation
| | - N. V. Vchislo
- A. E. Favorsky Irkutsk Institute of Chemistry; Siberian Branch of the Russian Academy of Sciences; 1 Favorsky Street 664033 Irkutsk Russian Federation
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52
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Bai XF, Zhang J, Xia CG, Xu JX, Xu LW. N-tert-Butanesulfinyl imine and aromatic tertiary amide derived non-biaryl atropisomers as chiral ligands for silver-catalyzed endo-selective [3+2] cycloaddition of azomethine ylides with maleimides. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.09.068] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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53
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Nájera C, Sansano JM. Binap and Phosphoramidites as Privileged Chiral Ligands for the Metal-Catalyzed Enantioselective 1,3-Dipolar Cycloaddition of Azomethine Ylides. CHEM REC 2016; 16:2430-2448. [DOI: 10.1002/tcr.201500283] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Carmen Nájera
- Department of Organic Chemistry and Centro de Innovación; en Química Avanzada (ORFEO-CINQA)Faculty of Sciences, University of Alicante; 03080 Alicante Spain
| | - José M. Sansano
- Department of Organic Chemistry, Instituto de Síntesis Orgánica; and Centro de Innovación en Química Avanzada (ORFEO-CINQA)Faculty of Sciences, University of Alicante; 03080 Alicante (Spain)
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54
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Mailyan AK, Eickhoff JA, Minakova AS, Gu Z, Lu P, Zakarian A. Cutting-Edge and Time-Honored Strategies for Stereoselective Construction of C–N Bonds in Total Synthesis. Chem Rev 2016; 116:4441-557. [DOI: 10.1021/acs.chemrev.5b00712] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Artur K. Mailyan
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - John A. Eickhoff
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Anastasiia S. Minakova
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Zhenhua Gu
- Department
of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Ping Lu
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Armen Zakarian
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
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55
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Wen YN, Zhang ZF, Liu NN, Xiang YH, Zhang ZY, Andrei G, Snoeck R, Schols D, Zhang QS, Wu QP. Synthesis and Bioactivity of Novel Trisubstituted Triazole Nucleosides. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2016; 35:147-60. [PMID: 26854981 DOI: 10.1080/15257770.2015.1115523] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
A series of novel trisubstituted 1,2,3-triazole purine nucleosides were efficiently synthesized via Huisgen 1,3-dipolar cycloaddition in good yields. Bioactivity against cytomegalovirus (CMV) and varicella-zoster virus (VZV) in human embryonic lung cell cultures was evaluated and all compounds show low antiviral activity.
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Affiliation(s)
- Yi-ning Wen
- a Department of Applied Chemistry and Pharmaceutics , Beijing Institute of Technology , Beijing 100081 , China
| | - Zhi-feng Zhang
- a Department of Applied Chemistry and Pharmaceutics , Beijing Institute of Technology , Beijing 100081 , China
| | - Ning-ning Liu
- a Department of Applied Chemistry and Pharmaceutics , Beijing Institute of Technology , Beijing 100081 , China
| | - Yu-hong Xiang
- b Department of Chemistry , Capital Normal University , Beijing 100048 , China
| | - Zhuo-yong Zhang
- b Department of Chemistry , Capital Normal University , Beijing 100048 , China
| | - Graciela Andrei
- c Rega Institute for Medical Research, KU Leuven , Minderbroedersstraat 10, B-3000 Leuven , Belgium
| | - Robert Snoeck
- c Rega Institute for Medical Research, KU Leuven , Minderbroedersstraat 10, B-3000 Leuven , Belgium
| | - Dominique Schols
- c Rega Institute for Medical Research, KU Leuven , Minderbroedersstraat 10, B-3000 Leuven , Belgium
| | - Qing-shan Zhang
- a Department of Applied Chemistry and Pharmaceutics , Beijing Institute of Technology , Beijing 100081 , China
| | - Qin-pei Wu
- a Department of Applied Chemistry and Pharmaceutics , Beijing Institute of Technology , Beijing 100081 , China
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56
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Bioorthogonal Chemistry—Introduction and Overview [corrected]. Top Curr Chem (Cham) 2016; 374:9. [PMID: 27572992 DOI: 10.1007/s41061-016-0010-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 01/15/2016] [Indexed: 01/25/2023]
Abstract
Bioorthogonal chemistry has emerged as a new powerful tool that facilitates the study of structure and function of biomolecules in their native environment. A wide variety of bioorthogonal reactions that can proceed selectively and efficiently under physiologically relevant conditions are now available. The common features of these chemical reactions include: fast kinetics, tolerance to aqueous environment, high selectivity and compatibility with naturally occurring functional groups. The design and development of new chemical transformations in this direction is an important step to meet the growing demands of chemical biology. This chapter aims to introduce the reader to the field by providing an overview on general principles and strategies used in bioorthogonal chemistry. Special emphasis is given to cycloaddition reactions, namely to 1,3-dipolar cycloadditions and Diels-Alder reactions, as chemical transformations that play a predominant role in modern bioconjugation chemistry. The recent advances have established these reactions as an invaluable tool in modern bioorthogonal chemistry. The key aspects of the methodology as well as future outlooks in the field are discussed.
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57
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Ungvarská Maľučká L, Vilková M, Kožíšek J, Imrich J. Strong deshielding in aromatic isoxazolines. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2016; 54:17-27. [PMID: 26365723 DOI: 10.1002/mrc.4308] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 07/01/2015] [Accepted: 07/06/2015] [Indexed: 06/05/2023]
Abstract
Very strong proton deshielding was found in di/tri-aromatic isoxazoline regioisomers prepared from acridin-4-yl dipolarophiles and stable benzonitrile oxides (BNO). Three alkenes, (acridin-4-yl)-CH=CH-R (R = COOCH3, Ph, and CONH2), reacted with three BNO dipoles (2,4,6-trimethoxy, 2,4,6-trimethyl, 2,6-dichloro) to give pairs of target isoxazolines with acridine bound to C-4 or C-5 carbon of the isoxazoline (denoted as 4-Acr or 5-Acr). Regioselectivity was dependent on both the dipolarophile and dipole character. The ester and amide dipolarophile displayed variable regioselectivity in cycloadditions whereas the styrene one afforded prevailing 4-Acr regioisomers. 2,4,6-Trimethoxy-BNO was most prone to form 5-Acr isoxazolines while mesitonitrile oxide gave major 4-Acr isoxazolines. Basic hydrolysis of the amide cycloadduct led to an unexpected isoxazolone product. The structure of the target compounds was studied by NMR, MS, and X-ray crystallography.
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Affiliation(s)
- Lucia Ungvarská Maľučká
- P. J. Šafárik University, Faculty of Science, Institute of Chemistry, NMR Laboratory, Moyzesova 11, 040 01, Košice, Slovakia
| | - Mária Vilková
- P. J. Šafárik University, Faculty of Science, Institute of Chemistry, NMR Laboratory, Moyzesova 11, 040 01, Košice, Slovakia
| | - Jozef Kožíšek
- Slovak Technical University, Faculty of Chemical and Food Technology, Department of Physical Chemistry, Radlinského 9, 812 37, Bratislava, Slovakia
| | - Ján Imrich
- P. J. Šafárik University, Faculty of Science, Institute of Chemistry, NMR Laboratory, Moyzesova 11, 040 01, Košice, Slovakia
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58
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Vilková M, Ungvarská Maľučká L, Imrich J. Prediction by (13)C NMR of regioselectivity in 1,3-dipolar cycloadditions of acridin-9-yl dipolarophiles. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2016; 54:8-16. [PMID: 26365601 DOI: 10.1002/mrc.4307] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Revised: 07/01/2015] [Accepted: 07/06/2015] [Indexed: 06/05/2023]
Abstract
Strong correlation was found between (13)C NMR chemical shifts of dipolarophilic CH=CH carbons and regioselectivity in 1,3-dipolar cycloadditions of new acridin-9-yl dipolarophiles with stable benzonitrile oxides (BNO). Accordingly, two starting dipolarophiles, (acridin-9-yl)-CH=CH-R (R = COOCH3 or Ph), reacted with three BNOs (2,4,6-trimethoxy, 2,4,6-trimethyl, and 2,6-dichloro) to give a mixture of two target isoxazoline regioisomers in which the acridine was bound either to isoxazoline C-4 carbon (4-Acr) or C-5 one (5-Acr). Methyl 3-(acridin-9-yl)propenoate afforded major 4-(acridin-9-yl)-isoxazoline-5-carboxylates (4-Acr) and minor 5-(acridin-9-yl)-4-carboxylates (5-Acr). 9-(2-Styryl)acridine regiospecifically afforded only 4-Acr cycloadducts. The ratios of regioisomers were compared with analogous reactions of acridin-4-yl dipolarophiles. Regioselectivity was dependent on a polarity of the CH=CH bond, donor effects in BNO, and stabilization by stacking of aromatic substituents in the products.
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Affiliation(s)
- Mária Vilková
- P. J. Šafárik University, Faculty of Science, Institute of Chemistry, NMR Laboratory, Moyzesova 11, 040 01, Košice, Slovakia
| | - Lucia Ungvarská Maľučká
- P. J. Šafárik University, Faculty of Science, Institute of Chemistry, NMR Laboratory, Moyzesova 11, 040 01, Košice, Slovakia
| | - Ján Imrich
- P. J. Šafárik University, Faculty of Science, Institute of Chemistry, NMR Laboratory, Moyzesova 11, 040 01, Košice, Slovakia
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59
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Abstract
Various vinyl ketonitrones are prepared using new strategies and were applied to synthesize heterocycles in organic synthesis.
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Affiliation(s)
- Wei-Min Shi
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Education of China and School of Chemistry & Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- China
| | - Xiao-Pan Ma
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Education of China and School of Chemistry & Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- China
| | - Gui-Fa Su
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Education of China and School of Chemistry & Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- China
| | - Dong-Liang Mo
- Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources
- Ministry of Education of China and School of Chemistry & Pharmaceutical Sciences
- Guangxi Normal University
- Guilin 541004
- China
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60
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Haberhauer G, Gleiter R, Woitschetzki S. anti-Diradical Formation in 1,3-Dipolar Cycloadditions of Nitrile Oxides to Acetylenes. J Org Chem 2015; 80:12321-32. [DOI: 10.1021/acs.joc.5b02230] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gebhard Haberhauer
- Institut
für Organische Chemie, Universität Duisburg-Essen, Universitätsstrasse
7, D-45117 Essen, Germany
| | - Rolf Gleiter
- Organisch-Chemisches
Institut, Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Sascha Woitschetzki
- Institut
für Organische Chemie, Universität Duisburg-Essen, Universitätsstrasse
7, D-45117 Essen, Germany
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61
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Lamborelle N, Simon JF, Luxen A, Monbaliu JCM. Continuous-flow thermolysis for the preparation of vinylglycine derivatives. Org Biomol Chem 2015; 13:11602-6. [PMID: 26552900 DOI: 10.1039/c5ob02036k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Syn sulfoxide elimination was carried out under continuous-flow conditions in a mesofluidic thermolysis reactor. The design of the reactor enabled accurate control of reaction time and conditions, affording a convenient scale-independent procedure for the production of N,C-protected vinylglycine derivatives. Thermolysis at 270 °C under 1000 psi of pressure in superheated toluene enabled typical daily outputs ranging from 11 to 46 g per day with excellent selectivities and ee (>97%). The various competitive reaction pathways were studied and rationalized according to a computational study.
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Affiliation(s)
- Nicolas Lamborelle
- Center for Integrated Technology and Organic Synthesis, Department of Chemistry, University of Liège, 4000 Liège, Belgium.
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62
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Koizumi A, Kimura M, Arai Y, Tokoro Y, Fukuzawa SI. Copper- and Silver-Catalyzed Diastereo- and Enantioselective Conjugate Addition Reaction of 1-Pyrroline Esters to Nitroalkenes: Diastereoselectivity Switch by Chiral Metal Complexes. J Org Chem 2015; 80:10883-91. [DOI: 10.1021/acs.joc.5b02024] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Akihiro Koizumi
- Department of Applied Chemistry,
Institute of Science and Engineering, Chuo University, Tokyo 112-8551, Japan
| | - Midori Kimura
- Department of Applied Chemistry,
Institute of Science and Engineering, Chuo University, Tokyo 112-8551, Japan
| | - Yuri Arai
- Department of Applied Chemistry,
Institute of Science and Engineering, Chuo University, Tokyo 112-8551, Japan
| | - Yuichiro Tokoro
- Department of Applied Chemistry,
Institute of Science and Engineering, Chuo University, Tokyo 112-8551, Japan
| | - Shin-ichi Fukuzawa
- Department of Applied Chemistry,
Institute of Science and Engineering, Chuo University, Tokyo 112-8551, Japan
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63
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The discovery of oxazolones-grafted spirooxindoles via three-component diversity oriented synthesis and their preliminary biological evaluation. Bioorg Med Chem Lett 2015; 25:3585-91. [DOI: 10.1016/j.bmcl.2015.06.076] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2015] [Revised: 05/16/2015] [Accepted: 06/20/2015] [Indexed: 01/02/2023]
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64
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Swain SP, Shih YC, Tsay SC, Jacob J, Lin CC, Hwang KC, Horng JC, Hwu JR. Aryne-Induced Novel Tandem 1,2-Addition/(3+2) Cycloaddition to Generate Imidazolidines and Pyrrolidines. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503319] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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65
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Swain SP, Shih Y, Tsay S, Jacob J, Lin C, Hwang KC, Horng J, Hwu JR. Aryne‐Induced Novel Tandem 1,2‐Addition/(3+2) Cycloaddition to Generate Imidazolidines and Pyrrolidines. Angew Chem Int Ed Engl 2015; 54:9926-30. [DOI: 10.1002/anie.201503319] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Indexed: 02/03/2023]
Affiliation(s)
- Sharada P. Swain
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013 (Taiwan)
| | - Yi‐Chun Shih
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013 (Taiwan)
| | - Shwu‐Chen Tsay
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013 (Taiwan)
- Department of Chemistry, National Central University, Jhongli City 32001 (Taiwan)
| | - Joby Jacob
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013 (Taiwan)
| | - Chun‐Cheng Lin
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013 (Taiwan)
| | - Kuo Chu Hwang
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013 (Taiwan)
| | - Jia‐Cherng Horng
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013 (Taiwan)
| | - Jih Ru Hwu
- Department of Chemistry and Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013 (Taiwan)
- Department of Chemistry, National Central University, Jhongli City 32001 (Taiwan)
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66
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Costa PRR, Sansano JM, Cossío U, Barcellos JCF, Dias AG, Nájera C, Arrieta A, de Cózar A, Cossío FP. Synthesis of Chromen[4,3-b]pyrrolidines by Intramolecular 1,3-Dipolar Cycloadditions of Azomethine Ylides: An Experimental and Computational Assessment of the Origin of Stereocontrol. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500434] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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67
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Jin L, Tolentino DR, Melaimi M, Bertrand G. Isolation of bis(copper) key intermediates in Cu-catalyzed azide-alkyne "click reaction". SCIENCE ADVANCES 2015; 1:e1500304. [PMID: 26601202 PMCID: PMC4640605 DOI: 10.1126/sciadv.1500304] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 04/05/2015] [Indexed: 05/20/2023]
Abstract
The copper-catalyzed 1,3-dipolar cycloaddition of an azide to a terminal alkyne (CuAAC) is one of the most popular chemical transformations, with applications ranging from material to life sciences. However, despite many mechanistic studies, direct observation of key components of the catalytic cycle is still missing. Initially, mononuclear species were thought to be the active catalysts, but later on, dinuclear complexes came to the front. We report the isolation of both a previously postulated π,σ-bis(copper) acetylide and a hitherto never-mentioned bis(metallated) triazole complex. We also demonstrate that although mono- and bis-copper complexes promote the CuAAC reaction, the dinuclear species are involved in the kinetically favored pathway.
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68
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da Silva AFF, Barata JF, Silva AM, Neves MGP, Tomé AC, Silva AM, Cavaleiro JA. Reactivity of tetrapyrrolyl nitrones towards dipolarophiles bearing electron-withdrawing groups. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.04.066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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69
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Morita N, Kono R, Fukui K, Miyazawa A, Masu H, Azumaya I, Ban S, Hashimoto Y, Okamoto I, Tamura O. BF3-Mediated cis-Selective Cycloaddition of O-Silyloxime with Alkenes. J Org Chem 2015; 80:4797-802. [DOI: 10.1021/acs.joc.5b00426] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Rina Kono
- Showa Pharmaceutical University, Machida, Tokyo 194-8543, Japan
| | - Kenji Fukui
- Showa Pharmaceutical University, Machida, Tokyo 194-8543, Japan
| | - Asuka Miyazawa
- Showa Pharmaceutical University, Machida, Tokyo 194-8543, Japan
| | - Hyuma Masu
- Faculty
of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, Sanuki 769-2193, Japan
| | - Isao Azumaya
- Faculty
of Pharmaceutical Sciences at Kagawa Campus, Tokushima Bunri University, Sanuki 769-2193, Japan
| | - Shintaro Ban
- Showa Pharmaceutical University, Machida, Tokyo 194-8543, Japan
| | | | - Iwao Okamoto
- Showa Pharmaceutical University, Machida, Tokyo 194-8543, Japan
| | - Osamu Tamura
- Showa Pharmaceutical University, Machida, Tokyo 194-8543, Japan
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70
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Romeo R, Carnovale C, Giofrè SV, Chiacchio MA, Garozzo A, Amata E, Romeo G, Chiacchio U. C-5'-Triazolyl-2'-oxa-3'-aza-4'a-carbanucleosides: Synthesis and biological evaluation. Beilstein J Org Chem 2015; 11:328-34. [PMID: 25815087 PMCID: PMC4362054 DOI: 10.3762/bjoc.11.38] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 02/20/2015] [Indexed: 12/27/2022] Open
Abstract
A novel series of 2’-oxa-3’-aza-4’a-carbanucleosides, featured with a triazole linker at the 5’-position, has been developed by exploiting a click chemistry reaction of 5’-azido-2’-oxa-3’-aza-4’a-carbanucleosides with substituted alkynes. Biological tests indicate an antitumor activity for the synthesized compounds: most of them inhibit cell proliferation of Vero, BS-C-1, HEp-2, MDCK, and HFF cells with a CC50 in the range of 5.0–40 μM. The synthesized compounds do not show any antiviral activity.
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Affiliation(s)
- Roberto Romeo
- Dipartimento Scienze del Farmaco e dei Prodotti per la Salute, University of Messina, Via S.S. Annunziata, 98168 Messina, Italy
| | - Caterina Carnovale
- Dipartimento Scienze del Farmaco e dei Prodotti per la Salute, University of Messina, Via S.S. Annunziata, 98168 Messina, Italy
| | - Salvatore V Giofrè
- Dipartimento Scienze del Farmaco e dei Prodotti per la Salute, University of Messina, Via S.S. Annunziata, 98168 Messina, Italy
| | - Maria A Chiacchio
- Dipartimento di Scienze del Farmaco, University of Catania, Via A. Doria 6, 95125-Catania, Italy
| | - Adriana Garozzo
- Dipartimento di Scienze Bio-Mediche, University of Catania,Via Androne 81, 95124 Catania, Italy
| | - Emanuele Amata
- Dipartimento di Scienze del Farmaco, University of Catania, Via A. Doria 6, 95125-Catania, Italy
| | - Giovanni Romeo
- Dipartimento Scienze del Farmaco e dei Prodotti per la Salute, University of Messina, Via S.S. Annunziata, 98168 Messina, Italy
| | - Ugo Chiacchio
- Dipartimento di Scienze del Farmaco, University of Catania, Via A. Doria 6, 95125-Catania, Italy
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71
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Catalytic asymmetric construction of spiro pyrrolidines with contiguous quaternary centers via 1,3-dipolar cycloaddition of azomethine ylides. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(14)60204-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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72
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Zhao BL, Lin Y, Yan HH, Du DM. Squaramide-catalysed asymmetric cascade aza-Michael/Michael addition reaction for the synthesis of chiral trisubstituted pyrrolidines. Org Biomol Chem 2015; 13:11351-61. [DOI: 10.1039/c5ob01749a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A squaramide catalysed aza-Michael/Michael cascade reaction between nitroalkenes and tosylaminomethyl enones or enoates afforded highly functionalized chiral pyrrolidines in good yields (up to 99%) with good diastereoselectivities (up to 91 : 9 dr) and excellent enantioselectivities (up to >99% ee) under mild conditions.
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Affiliation(s)
- Bo-Liang Zhao
- School of Chemical Engineering and Environment
- Beijing Institute of Technology
- Beijing 100081
- People's Republic of China
| | - Ye Lin
- School of Chemical Engineering and Environment
- Beijing Institute of Technology
- Beijing 100081
- People's Republic of China
| | - Hao-Hao Yan
- School of Chemical Engineering and Environment
- Beijing Institute of Technology
- Beijing 100081
- People's Republic of China
| | - Da-Ming Du
- School of Chemical Engineering and Environment
- Beijing Institute of Technology
- Beijing 100081
- People's Republic of China
- State Key Laboratory of Elemento-Organic Chemistry
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73
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Kankala S, Jonnalagadda SB, Vasam CS. An organo-NHC catalyzed domino addition approach for the selective synthesis of 5-butynylisoxazoles and subsequent Sonogashira coupling. RSC Adv 2015. [DOI: 10.1039/c5ra11947b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
An organo-NHC catalysed domino addition approach for the selective synthesis of 5-butynylisoxazoles and the subsequent Sonogashira cross-coupling for the selective synthesis of corresponding internal alkynes is described.
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Affiliation(s)
- Shravankumar Kankala
- School of Chemistry & Physics
- University of Kwazulu-Natal
- Westville Campus
- Durban-4000
- South Africa
| | | | - Chandra Sekhar Vasam
- Department of Chemistry
- Satavahana University
- Karimnagar
- India
- Department of Pharmaceutical Chemistry
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74
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Batchu VR, Romero-Estudillo I, Boto A, Miguélez J. Metal-free, one-pot conversion of proline derivatives into 2-aryl-3-iodo pyrrolidines by a sequential scission-iodination-arylation process. Org Biomol Chem 2014; 12:9547-56. [PMID: 25333212 DOI: 10.1039/c4ob01372g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The metal-free, direct conversion of readily available proline derivatives into 2-aryl-3-iodopyrrolidines is carried out under mild conditions and in good yields, using a sequential radical decarboxylation-oxidation-iodination-arylation reaction. These iodinated pyrrolidines are valuable precursors of other compounds. For instance, they can be cyclized to tricyclic compounds or undergo dehalogenation to 2-aryl-2,5-dihydro-1H-pyrroles, which are iminosugar and 2-arylpyrrole precursors. This process provides a short pathway to a variety of alkaloid and drug analogues of potential pharmaceutical interest.
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Affiliation(s)
- Venkateswara Rao Batchu
- Instituto de Productos Naturales y Agrobiología del CSIC, Avda. Astrofísico Francisco Sánchez 3, 38206-La Laguna, Tenerife, Spain.
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75
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76
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Thakur RK, Mishra A, Ramakrishna K, Mahar R, Shukla SK, Srivastava A, Tripathi RP. Synthesis of novel pyrimidine nucleoside analogues owning multiple bases/sugars and their glycosidase inhibitory activity. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.09.078] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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77
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Panda A, Das S, Pal S. Highly regio- and diastereoselective, acidic clay supported intramolecular nitrile oxide–alkene cycloaddition on d-ribose derived nitriles: an efficient synthetic route to isoxazoline fused five and six membered carbocycles. Carbohydr Res 2014; 398:13-8. [DOI: 10.1016/j.carres.2014.06.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 06/02/2014] [Accepted: 06/06/2014] [Indexed: 12/19/2022]
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78
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Xu J, Li X, Wu J, Dai WM. Synthesis of 5-alkyl-5-aryl-1-pyrroline N-oxides from 1-aryl-substituted nitroalkanes and acrolein via Michael addition and nitro reductive cyclization. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.07.046] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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79
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Głowacka IE, Balzarini J, Andrei G, Snoeck R, Schols D, Piotrowska DG. Design, synthesis, antiviral and cytostatic activity of ω-(1H-1,2,3-triazol-1-yl)(polyhydroxy)alkylphosphonates as acyclic nucleotide analogues. Bioorg Med Chem 2014; 22:3629-41. [PMID: 24906510 PMCID: PMC7127666 DOI: 10.1016/j.bmc.2014.05.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 05/12/2014] [Accepted: 05/12/2014] [Indexed: 11/24/2022]
Abstract
The efficient synthesis of a new series of polyhydroxylated dibenzyl ω-(1H-1,2,3-triazol-1-yl)alkylphosphonates as acyclic nucleotide analogues is described starting from dibenzyl ω-azido(polyhydroxy)alkylphosphonates and selected alkynes under microwave irradiation. Selected O,O-dibenzylphosphonate acyclonucleotides were transformed into the respective phosphonic acids. All compounds were evaluated in vitro for activity against a broad variety of DNA and RNA viruses and for cytostatic activity against murine leukemia L1210, human T-lymphocyte CEM and human cervix carcinoma HeLa cells. Compound (1S,2S)-16b exhibited antiviral activity against Influenza A H3N2 subtype (EC50=20μM-visual CPE score; EC50=18μM-MTS method; MCC >100μM, CC50 >100μM) in Madin Darby canine kidney cell cultures (MDCK), and (1S,2S)-16k was active against vesicular stomatitis virus and respiratory syncytial virus in HeLa cells (EC50=9 and 12μM, respectively). Moreover, compound (1R,2S)-16l showed activity against both herpes simplex viruses (HSV-1, HSV-2) in HEL cell cultures (EC50=2.9 and 4μM, respectively) and feline herpes virus in CRFK cells (EC50=4μM) but at the same time it exhibited cytotoxicity toward uninfected cell (MCC⩾4μM). Several other compounds have been found to inhibit proliferation of L1210, CEM as well as HeLa cells with IC50 in the 4-50μM range. Among them compounds (1S,2S)- and (1R,2S)-16l were the most active (IC50 in the 4-7μM range).
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Affiliation(s)
- Iwona E Głowacka
- Bioorganic Chemistry Laboratory, Faculty of Pharmacy, Medical University of Łódź, Muszyńskiego 1, 90-151 Łódź, Poland.
| | - Jan Balzarini
- Rega Institute for Medical Research, KU Leuven, Minderbroedersstraat 10, B-3000 Leuven, Belgium
| | - Graciela Andrei
- Rega Institute for Medical Research, KU Leuven, Minderbroedersstraat 10, B-3000 Leuven, Belgium
| | - Robert Snoeck
- Rega Institute for Medical Research, KU Leuven, Minderbroedersstraat 10, B-3000 Leuven, Belgium
| | - Dominique Schols
- Rega Institute for Medical Research, KU Leuven, Minderbroedersstraat 10, B-3000 Leuven, Belgium
| | - Dorota G Piotrowska
- Bioorganic Chemistry Laboratory, Faculty of Pharmacy, Medical University of Łódź, Muszyńskiego 1, 90-151 Łódź, Poland
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80
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Determination of Acid Dissociation Constants (pK a ) of Bicyclic Thiohydantoin-Pyrrolidine Compounds in 20% Ethanol-Water Hydroorganic Solvent. Int J Anal Chem 2014; 2014:634194. [PMID: 24799905 PMCID: PMC3985308 DOI: 10.1155/2014/634194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 03/03/2014] [Accepted: 03/04/2014] [Indexed: 11/25/2022] Open
Abstract
The acid dissociation constants of potential bioactive fused ring thiohydantoin-pyrrolidine compounds were determined by potentiometric titration in 20% (v/v) ethanol-water mixed at 25 ± 0.1°C, at an ionic background of 0.1 mol/L of NaCl using the HYPERQUAD computer program. Proton affinities of potential donor atoms of the ligands were calculated by AM1 and PM3 semiempiric methods. We found, potentiometrically, three different acid dissociation constants for 1a–f. We suggest that these acid dissociation constants are related to the carboxyl, enol, and amino groups.
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81
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Llompart DF, Sarotti AM, Corne V, Suárez AG, Spanevello RA, Echeverría GA, Piro OE, Castellano EE. Asymmetric construction of substituted pyrrolidines via 1,3-dipolar cycloaddition of azomethine ylides and chiral acrylates derived from biomass. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.02.113] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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82
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Joseph R, Murray C, Garner P. Catalytic asymmetric exo-selective [C+NC+CC] reaction. Org Lett 2014; 16:1550-3. [PMID: 24601876 DOI: 10.1021/ol500474a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A catalytic asymmetric version of the exo-selective [C+NC+CC] reaction is reported. This multicomponent reaction utilizes a readily prepared achiral glycyl sultam as the "NC" component and commercially available catalyst components. The method can be applied to a variety of aldehydes ("C" component) and activated alkenes ("CC" component) to provide substituted pyrrolidines in good yields and high enantioselectivities. Of particular note is the ability to employ labile enolizable aldehydes (e.g., acetaldehyde and propionaldehyde) in this reaction.
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Affiliation(s)
- Ryan Joseph
- Department of Chemistry, Washington State University , Pullman, Washington 99164-4630, United States
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83
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Nájera C, Sansano JM. Coinage metal complexes as chiral catalysts for 1,3-dipolar cycloadditions. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.03.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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84
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Hernández D, Boto A. Nucleoside Analogues: Synthesis and Biological Properties of Azanucleoside Derivatives. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301731] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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85
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Watanabe S, Tada A, Tokoro Y, Fukuzawa SI. Bifunctional AgOAc/ThioClickFerrophos complex-catalyzed asymmetric 1,3-dipolar cycloaddition of azomethine ylides with aryl- and alkylidene malonates. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.101] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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86
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Kankala S, Kankala RK, Kommidi DR, Mudithanapelli C, Balaboina R, Vadde R, Jonnalagadda SB, Vasam CS. Synthesis and anti-cancer evaluation of steroidal diglycoside–pyrazoline hybrids. RSC Adv 2014. [DOI: 10.1039/c4ra05599c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
A new series of pyrazoline-steroidal diglycoside hybrids were synthesized via catalyzed cyclocondensation of the corresponding chalcones, screened for in vitro cytotoxic activity and the SAR deduced.
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Affiliation(s)
- Shravankumar Kankala
- Department of Chemistry
- Kakatiya University
- Warangal, India
- School of Chemistry & Physics
- University of Kwazulu-Natal
| | - Ranjith Kumar Kankala
- Institute of Biotechnology
- National Dong-Hwa University
- Hualien 974, Republic of China
| | | | | | | | - Ravinder Vadde
- Department of Chemistry
- Kakatiya University
- Warangal, India
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87
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Gálvez JA, Díaz-de-Villegas MD, Alías M, Badorrey R. Chiral Iminoesters Derived from d-Glyceraldehyde in [3 + 2] Cycloaddition Reactions. Asymmetric Synthesis of a Key Intermediate in the Synthesis of Neuramidinase Inhibitors. J Org Chem 2013; 78:11404-13. [DOI: 10.1021/jo401967a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- José A. Gálvez
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Departamento de
Catálisis y Procesos Catalíticos, Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - María D. Díaz-de-Villegas
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Departamento de
Catálisis y Procesos Catalíticos, Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Miriam Alías
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Departamento de
Catálisis y Procesos Catalíticos, Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Ramón Badorrey
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC - Universidad de Zaragoza, Departamento de
Catálisis y Procesos Catalíticos, Pedro Cerbuna 12, E-50009 Zaragoza, Spain
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88
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The first iodine improved 1,3-dipolar cycloaddition: facile and novel synthesis of 2-substituted benzo[f]isoindole-4,9-diones. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.08.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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89
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Li YJ, Huang HM, Dong HQ, Jia JH, Han L, Ye Q, Gao JR. The Synthesis of Benzo[f]isoindole-1,3-dicarboxylates via an I2-Induced 1,3-Dipolar Cycloaddition Reaction. J Org Chem 2013; 78:9424-30. [DOI: 10.1021/jo401652k] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yu-Jin Li
- State Key
Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Huan-Ming Huang
- State Key
Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Hua-Qing Dong
- State Key
Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Jian-Hong Jia
- State Key
Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Liang Han
- State Key
Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Qing Ye
- State Key
Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
| | - Jian-Rong Gao
- State Key
Laboratory Breeding
Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
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90
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Pablo Ó, Guijarro D, Yus M. Synthesis of Nitrogenated Heterocycles by Asymmetric Transfer Hydrogenation of N-(tert-Butylsulfinyl)haloimines. J Org Chem 2013; 78:9181-9. [DOI: 10.1021/jo4014386] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Óscar Pablo
- Departamento de Química
Orgánica, Facultad de Ciencias and Instituto de Síntesis
Orgánica (ISO), Universidad de Alicante, Apartado 99, 03080 Alicante, Spain
| | - David Guijarro
- Departamento de Química
Orgánica, Facultad de Ciencias and Instituto de Síntesis
Orgánica (ISO), Universidad de Alicante, Apartado 99, 03080 Alicante, Spain
| | - Miguel Yus
- Departamento de Química
Orgánica, Facultad de Ciencias and Instituto de Síntesis
Orgánica (ISO), Universidad de Alicante, Apartado 99, 03080 Alicante, Spain
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91
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Alonso B, Ocejo M, Carrillo L, Vicario JL, Reyes E, Uria U. Using heteroaryl-lithium reagents as hydroxycarbonyl anion equivalents in conjugate addition reactions with (S,S)-(+)-pseudoephedrine as chiral auxiliary; enantioselective synthesis of 3-substituted pyrrolidines. J Org Chem 2013; 78:614-27. [PMID: 23260037 DOI: 10.1021/jo302438k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have developed an efficient protocol for carrying out the stereocontrolled formal conjugate addition of hydroxycarbonyl anion equivalents to α,β-unsaturated carboxylic acid derivatives using (S,S)-(+)-pseudoephedrine as chiral auxiliary, making use of the synthetic equivalence between the heteroaryl moieties and the carboxylate group. This protocol has been applied as key step in the enantioselective synthesis of 3-substituted pyrrolidines in which, after removing the chiral auxiliary, the heteroaryl moiety is converted into a carboxylate group followed by reduction and double nucleophilic displacement. Alternatively, the access to the same type of heterocyclic scaffold but with opposite absolute configuration has also been accomplished by making use of the regio- and diastereoselective conjugate addition of organolithium reagents to α,β,γ,δ-unsaturated amides derived from the same chiral auxiliary followed by chiral auxiliary removal, ozonolysis, and reductive amination/intramolecular nucleophilic displacement sequence.
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Affiliation(s)
- Beatriz Alonso
- Departamento de Química Orgánica II, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea UPV/EHU, P.O. Box 644, E-48080 Bilbao, Spain
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92
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Binap-silver salts as chiral catalysts for the enantioselective 1,3-dipolar cycloaddition of azomethine ylides and alkenes. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.10.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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93
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Georgiou D, Toutountzoglou V, Muir KW, Hadjipavlou-Litina D, Elemes Y. Synthesis of sulfur containing dihydro-pyrrolo derivatives and their biological evaluation as antioxidants. Bioorg Med Chem 2012; 20:5103-9. [PMID: 22858299 DOI: 10.1016/j.bmc.2012.07.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Revised: 06/29/2012] [Accepted: 07/06/2012] [Indexed: 11/26/2022]
Abstract
The 1,3-dipolar cycloaddition to N-phenylmaleimide of azomethine ylides, generated in situ from sulfanyl-substituted imines of glycine esters, yields 5H-dihydro-pyrrolo products with syn diastereoselectivity. The syn (major) and anti (minor) products were isolated chromatographically and fully characterized by spectroscopic methods and in two cases also by X-ray analysis. The diastereomeric cycloadducts were tested for their antioxidant activity with good results.
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Affiliation(s)
- Dimitra Georgiou
- Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece
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94
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Gebert A, Barth M, Linden A, Widmer U, Heimgartner H. Novel Synthesis of 2-Alkylquinolizinium-1-olates and Their 1,3-Dipolar Cycloaddition Reactions with Acetylenes. Helv Chim Acta 2012. [DOI: 10.1002/hlca.201200038] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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95
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Highly Efficient Organic and Macromolecular Synthesis Using Sequential Copper Catalyzed Azide-Alkyne [3+2] Cycloaddition and ATRA/ATRP. ACTA ACUST UNITED AC 2012. [DOI: 10.1021/bk-2012-1100.ch006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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96
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Valiullina ZR, Gataullin SS, Tsirel’son BY, Valeev RF, Miftakhov MS. Chiral furan-2-yl-substituted reagents based on (+)-α-methylbenzylamine. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2012. [DOI: 10.1134/s1070428012030189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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97
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Ricardo CL, Pintauer T. Synthesis of Functionalized Polytriazoles via One-Pot Sequential Copper-Catalyzed Azide-Alkyne [3+2] Cycloaddition and Atom Transfer Radical Addition (ATRA). Isr J Chem 2012. [DOI: 10.1002/ijch.201100111] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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98
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Han X, Wu X, Min C, Zhou HB, Dong C. An expedient approach to highly enantioenriched cyclic nitrones mediated by robust and recoverable C3-symmetric cinchonine-squaramide catalysts. RSC Adv 2012. [DOI: 10.1039/c2ra21162a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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99
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Bădoiu A, Kündig EP. Electronic effects in 1,3-dipolar cycloaddition reactions of N-alkyl and N-benzyl nitrones with dipolarophiles. Org Biomol Chem 2012; 10:114-21. [DOI: 10.1039/c1ob06144e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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100
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Koszytkowska-Stawińska M, Mironiuk-Puchalska E, Rowicki T. Synthesis of 1,2,3-triazolo-nucleosides via the post-triazole N-alkylation. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.10.067] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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