1
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Li Y, Zhang CL, Huang WH, Sun N, Hao M, Neumann H, Beller M. A general strategy for the synthesis of α-trifluoromethyl- and α-perfluoroalkyl-β-lactams via palladium-catalyzed carbonylation. Chem Sci 2021; 12:10467-10473. [PMID: 34447539 PMCID: PMC8361786 DOI: 10.1039/d1sc02212a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/30/2021] [Indexed: 11/30/2022] Open
Abstract
β-Lactam compounds play a key role in medicinal chemistry, specifically as the most important class of antibiotics. Here, we report a novel one-step approach for the synthesis of α-(trifluoromethyl)-β-lactams and related products from fluorinated olefins, anilines and CO. Utilization of an advanced palladium catalyst system with the Ruphos ligand allows for selective cycloaminocarbonylations to give diverse fluorinated β-lactams in high yields.
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Affiliation(s)
- Yang Li
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, School of Environmental and Chemical Engineering, Xi'an Polytechnic University No. 19 Jinhua South Road 710048 Xi'an China
- Leibniz-Institut für Katalyse e.V. RostockAlbert-Einstein-Straße 29a 18059 Rostock Germany
| | - Cai-Lin Zhang
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, School of Environmental and Chemical Engineering, Xi'an Polytechnic University No. 19 Jinhua South Road 710048 Xi'an China
| | - Wei-Heng Huang
- Leibniz-Institut für Katalyse e.V. RostockAlbert-Einstein-Straße 29a 18059 Rostock Germany
| | - Ning Sun
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, School of Environmental and Chemical Engineering, Xi'an Polytechnic University No. 19 Jinhua South Road 710048 Xi'an China
| | - Meng Hao
- Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, School of Environmental and Chemical Engineering, Xi'an Polytechnic University No. 19 Jinhua South Road 710048 Xi'an China
| | - Helfried Neumann
- Leibniz-Institut für Katalyse e.V. RostockAlbert-Einstein-Straße 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e.V. RostockAlbert-Einstein-Straße 29a 18059 Rostock Germany
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2
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Ismailoglu E, Mert Z, Dinc M, Kaya K, Yucel B. Synthesis of 3‐Amino‐4‐iodothiophenes through Iodocyclization of 1‐(1,3‐Dithian‐2‐yl)propargylamines. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Eda Ismailoglu
- Department of Chemistry Science Faculty Istanbul Technical University 34469, Maslak Istanbul Turkey
| | - Zeynep Mert
- Department of Chemistry Science Faculty Istanbul Technical University 34469, Maslak Istanbul Turkey
| | - Mert Dinc
- Department of Chemistry Science Faculty Istanbul Technical University 34469, Maslak Istanbul Turkey
| | - Kerem Kaya
- Department of Chemistry Science Faculty Istanbul Technical University 34469, Maslak Istanbul Turkey
| | - Baris Yucel
- Department of Chemistry Science Faculty Istanbul Technical University 34469, Maslak Istanbul Turkey
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3
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Bashiri M, Jarrahpour A, Rastegari B, Iraji A, Irajie C, Amirghofran Z, Malek-Hosseini S, Motamedifar M, Haddadi M, Zomorodian K, Zareshahrabadi Z, Turos E. Synthesis and evaluation of biological activities of tripodal imines and β-lactams attached to the 1,3,5-triazine nucleus. MONATSHEFTE FUR CHEMIE 2020. [DOI: 10.1007/s00706-020-02592-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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4
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V.-T. Mai T, Duong MV, Le XT, Huynh LK. Ab initio dynamics of unimolecular decomposition of β-propiolactone and β-propiolactam. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.08.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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5
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Garud DR, Sonawane AD, Auti JB, Rode ND, Ranpise VR, Joshi RR, Joshi RA. Regioselective and diastereoselective iodocyclization reaction of alkene-thioureas: an efficient approach to bicyclic β-lactams. NEW J CHEM 2015. [DOI: 10.1039/c5nj01963j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bicyclic β-lactams, i.e. 3-thia-1-dethiacephams were synthesized via a highly regioselective and diastereoselective iodocyclization reaction of alkene-thioureas with molecular iodine.
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Affiliation(s)
- Dinesh R. Garud
- Department of Chemistry
- Sir Parashurambhau College
- Pune 411 030
- India
| | - Amol D. Sonawane
- Division of Organic Chemistry
- National Chemical Laboratory
- Pune 411 008
- India
| | - Jyoti B. Auti
- Department of Chemistry
- Sir Parashurambhau College
- Pune 411 030
- India
| | - Navnath D. Rode
- Division of Organic Chemistry
- National Chemical Laboratory
- Pune 411 008
- India
| | - Vinod R. Ranpise
- Department of Chemistry
- Sir Parashurambhau College
- Pune 411 030
- India
| | - Rohini R. Joshi
- Division of Organic Chemistry
- National Chemical Laboratory
- Pune 411 008
- India
| | - Ramesh A. Joshi
- Division of Organic Chemistry
- National Chemical Laboratory
- Pune 411 008
- India
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6
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Ketenes as Privileged Synthons in the Syntheses of Heterocyclic Compounds Part 2: Five-Membered Heterocycles. ADVANCES IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1016/bs.aihch.2015.02.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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7
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Aurelio L, Volpe R, Halim R, Scammells PJ, Flynn BL. Synthesis of Thieno-Fused Heterocycles through Reiterative Iodocyclization. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400072] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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8
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Monleón A, Blay G, Domingo LR, Muñoz MC, Pedro JR. Synthesis of Densely Functionalised 5-Halogen-1,3-oxazin-2-ones by Halogen-Mediated Regioselective Cyclisation ofN-Cbz-Protected Propargylic Amines: A Combined Experimental and Theoretical Study. Chemistry 2013; 19:14852-60. [DOI: 10.1002/chem.201302089] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Indexed: 11/07/2022]
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9
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Zheng W, Hong Y, Wang P, Zheng F, Zhang Y, Wang W. Stereoselective hydrozirconation of alkynylsulfide and regioselective synthesis of haloalkenyl sulfide via electrophile-switched halogenation of thioalkenyl zirconocene. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.122] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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10
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Bari S, Bhalla A, Reshma, Hundal G. Facile synthesis of novel bicyclic β-lactams: analogues of C-fused penicillin type ring systems. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.11.062] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Mollet K, Dhooghe M, De Kimpe N. Stereoselective synthesis of bicyclic tetrahydrofuran-fused ?-lactams and their conversion into methyl cis-3-aminotetrahydrofuran-2-carboxylates. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.01.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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12
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13
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Yang F, Jin T, Bao M, Yamamoto Y. Facile synthesis of dihaloheterocycles via electrophilic iodocyclization. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.08.084] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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14
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Zora M, Kivrak A. Synthesis of Pyrazoles via CuI-Mediated Electrophilic Cyclizations of α,β-Alkynic Hydrazones. J Org Chem 2011; 76:9379-90. [DOI: 10.1021/jo201685p] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Metin Zora
- Department of Chemistry, Middle East Technical University, 06531 Ankara, Turkey
| | - Arif Kivrak
- Department of Chemistry, Middle East Technical University, 06531 Ankara, Turkey
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15
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Zarei M, Mohamadzadeh M. 3-Thiolated 2-azetidinones: synthesis and in vitro antibacterial and antifungal activities. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.05.043] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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16
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Zora M, Kivrak A, Yazici C. Synthesis of Pyrazoles via Electrophilic Cyclization. J Org Chem 2011; 76:6726-42. [DOI: 10.1021/jo201119e] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Metin Zora
- Department of Chemistry, Middle East Technical University, 06531 Ankara, Turkey
| | - Arif Kivrak
- Department of Chemistry, Middle East Technical University, 06531 Ankara, Turkey
| | - Ceyda Yazici
- Department of Chemistry, Middle East Technical University, 06531 Ankara, Turkey
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17
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Godoi B, Schumacher RF, Zeni G. Synthesis of heterocycles via electrophilic cyclization of alkynes containing heteroatom. Chem Rev 2011; 111:2937-80. [PMID: 21425870 DOI: 10.1021/cr100214d] [Citation(s) in RCA: 573] [Impact Index Per Article: 44.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Benhur Godoi
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNE, UFSM, Santa Maria-Rio Grande do Sul, Brazil 97105-900
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18
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19
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Yang F, Jin T, Bao M, Yamamoto Y. Facile synthesis of diiodinated dihydronaphthalenes and naphthalenes via iodine mediated electrophilic cyclization. Chem Commun (Camb) 2011; 47:4013-5. [DOI: 10.1039/c0cc05442a] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Ram RN, Kumar N, Singh N. Synthesis of Chlorinated Bicyclic C-Fused Tetrahydrofuro[3,2-c]azetidin-2-ones. J Org Chem 2010; 75:7408-11. [DOI: 10.1021/jo101045z] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ram N. Ram
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
| | - Neeraj Kumar
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
| | - Nem Singh
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India
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21
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Méndez L, Mata EG. Synthesis of Multicyclic β-Lactam Derivatives via Solid-Phase-Generated Ketenes. ACTA ACUST UNITED AC 2010; 12:810-3. [DOI: 10.1021/cc100140r] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Luciana Méndez
- Instituto de Química Rosario (IQUIR). Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario,CONICET, Suipacha 531, S2002LRK Rosario, Argentina
| | - Ernesto G. Mata
- Instituto de Química Rosario (IQUIR). Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario,CONICET, Suipacha 531, S2002LRK Rosario, Argentina
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22
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Abstract
A simple, straightforward strategy for the synthesis of polyheterocyclic compounds (PHCs) is reported, which involves iterative cycles of palladium-catalyzed Sonogashira coupling, followed by iodocyclization using I(2) or ICl. A variety of heterocyclic units, including benzofurans, benzothiophenes, indoles, and isocoumarins, can be efficiently incorporated under mild reaction conditions. In addition, variations of this strategy afford a variety of linked and fused PHCs.
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Affiliation(s)
- Saurabh Mehta
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
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23
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Mancuso R, Mehta S, Gabriele B, Salerno G, Jenks WS, Larock RC. A simple and mild synthesis of 1H-isochromenes and (Z)-1-alkylidene-1,3-dihydroisobenzofurans by the iodocyclization of 2-(1-alkynyl)benzylic alcohols. J Org Chem 2010; 75:897-901. [PMID: 20043652 PMCID: PMC2813916 DOI: 10.1021/jo902333y] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A variety of iodo-substituted isochromenes, dihydroisobenzofurans, and pyranopyridines are readily prepared in good to excellent yields under mild conditions by the iodocyclization of readily available 2-(1-alkynyl)benzylic alcohols or 2-(1-alkynyl)-3-(hydroxymethyl)pyridines. Reactions are carried out in MeCN at 25 degrees C with 3 equiv of I(2) as the iodine source and NaHCO(3) (3 equiv) as the base. The regiochemical outcome of the reaction strongly depends on the substitution pattern of the starting material. In particular, the 5-exo-dig cyclization mode, leading to dihydroisobenzofurans, is observed in the case of substrates bearing a tertiary alcoholic group, owing to the gem-dialkyl effect, while the 6-endo-dig cyclization mode, leading to isochromene or pyranopyridines, is the usually preferred pathway in the case of substrates bearing a primary or secondary alcoholic group.
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Affiliation(s)
- Raffaella Mancuso
- Dipartimento di Chimica, Università della Calabria, 87036 Arcavacata di Rende (CS), Italy
| | - Saurabh Mehta
- Department of Chemistry, Iowa State University, Ames, Iowa 50011 USA
| | - Bartolo Gabriele
- Dipartimento di Scienze Farmaceutiche, Università della Calabria, 87036 Arcavacata di Rende (CS), Italy
| | - Giuseppe Salerno
- Dipartimento di Chimica, Università della Calabria, 87036 Arcavacata di Rende (CS), Italy
| | - William S. Jenks
- Department of Chemistry, Iowa State University, Ames, Iowa 50011 USA
| | - Richard C. Larock
- Department of Chemistry, Iowa State University, Ames, Iowa 50011 USA
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24
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Jarrahpour A, Motamedifar M, Zarei M, Mimouni M. Synthesis of New N-Sulfonyl Monocyclic β-Lactams and the Investigation of Their Antibacterial Activities. PHOSPHORUS SULFUR 2010. [DOI: 10.1080/10426500902773161] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Aliasghar Jarrahpour
- a Department of Chemistry, College of Sciences , Shiraz University , Shiraz, Iran
| | - Mohammad Motamedifar
- b Department of Bacteriology and Virology, Shiraz Medical School , Shiraz University Medical Science , Shiraz, Iran
| | - Maaroof Zarei
- a Department of Chemistry, College of Sciences , Shiraz University , Shiraz, Iran
| | - Mostafa Mimouni
- c Laboratoire Chimie des Matériaux , Université Mohammed Premier , Oujda, Morocco
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25
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Mehta S, Waldo JP, Larock RC. Competition studies in alkyne electrophilic cyclization reactions. J Org Chem 2009; 74:1141-7. [PMID: 19105638 DOI: 10.1021/jo802196r] [Citation(s) in RCA: 167] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The relative reactivity of various functional groups toward alkyne electrophilic cyclization reactions has been studied. The required diarylalkynes have been prepared by consecutive Sonogashira reactions of appropriately substituted aryl halides and competitive cyclizations have been performed using I(2), ICl, NBS and PhSeCl as electrophiles. The results indicate that the nucleophilicity of the competing functional groups, polarization of the alkyne triple bond, and the cationic nature of the intermediate are the most important factors in determining the outcome of these reactions.
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Affiliation(s)
- Saurabh Mehta
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
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26
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Xie YX, Yan ZY, Wang DZ, Wu LY, Qian B, Liu XY, Liang YM. Synthesis of Polysubstituted 3-Iodopyrans by Electrophilic Cyclization. European J Org Chem 2009. [DOI: 10.1002/ejoc.200801259] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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Zhang WX, Nishiura M, Hou Z. Synthesis of (Z)-1-Aza-1,3-enynes by the Cross-Coupling of Terminal Alkynes with Isocyanides Catalyzed by Rare-Earth Metal Complexes. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200804306] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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28
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Zhang WX, Nishiura M, Hou Z. Synthesis of (Z)-1-Aza-1,3-enynes by the Cross-Coupling of Terminal Alkynes with Isocyanides Catalyzed by Rare-Earth Metal Complexes. Angew Chem Int Ed Engl 2008; 47:9700-3. [DOI: 10.1002/anie.200804306] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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29
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Olier C, Azzi N, Gil G, Gastaldi S, Bertrand MP. Dicobalt hexacarbonyl complexes of alkynyl imines in a sequential Staudinger/Pauson-Khand process. A route to new fused tricyclic beta-lactams. J Org Chem 2008; 73:8469-73. [PMID: 18844409 DOI: 10.1021/jo801668b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Dicobalt hexacarbonyl complexes of alkynyl imines were allowed to react with ketenes via Staudinger reaction. Sequential [2 + 2] cycloaddition/Pauson-Khand reaction led to structurally new fused-tricyclic beta-lactams and fused-azabicyclic cyclopentenones. Chemoselectivity, scope, and limitation of the process were investigated.
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Affiliation(s)
- Clarisse Olier
- Laboratoire de Chimie Moléculaire Organique, LCP UMR 6264, boite 562, Université Paul Cézanne, Faculté des Sciences St. Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
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30
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Anti-tumor activity of N-thiolated beta-lactam antibiotics. Cancer Lett 2008; 268:63-9. [PMID: 18468785 DOI: 10.1016/j.canlet.2008.03.047] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2008] [Revised: 03/17/2008] [Accepted: 03/19/2008] [Indexed: 11/21/2022]
Abstract
An ongoing strategy for cancer treatment is selective induction of apoptosis in cancer over normal cells. N-thiolated beta-lactams were found to induce DNA damage, growth arrest and apoptosis in cultured human cancer cells. However, whether these compounds have a similar effect in vivo has not been studied. We report here that treatment with the beta-lactam L-1 caused a significant inhibition of tumor growth in a breast cancer xenograft mouse model, associated with induction of DNA damage and apoptosis in vivo. These results suggest that the synthetic antibiotic N-thiolated beta-lactams hold great potential to be developed as novel anti-cancer drugs.
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31
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Just ZW, Larock RC. Synthesis of 2(3H)-Furanones via Electrophilic Cyclization. J Org Chem 2008; 73:2662-7. [DOI: 10.1021/jo702666j] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ziwei W. Just
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
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32
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Waldo JP, Larock RC. The synthesis of highly substituted isoxazoles by electrophilic cyclization: an efficient synthesis of valdecoxib. J Org Chem 2007; 72:9643-7. [PMID: 17979295 PMCID: PMC2529460 DOI: 10.1021/jo701942e] [Citation(s) in RCA: 148] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A large number of functionally substituted 2-alkyn-1-one O-methyl oximes have been cyclized under mild reaction conditions in the presence of ICl to give the corresponding 4-iodoisoxazoles in moderate to excellent yields. The resulting 4-iodoisoxazoles undergo various palladium-catalyzed reactions to yield 3,4,5-trisubstituted isoxazoles, including valdecoxib.
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Affiliation(s)
- Jesse P. Waldo
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
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33
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Guillarme S, Plé K, Banchet A, Liard A, Haudrechy A. Alkynylation of chiral aldehydes: alkoxy-, amino-, and thio-substituted aldehydes. Chem Rev 2007; 106:2355-403. [PMID: 16771453 DOI: 10.1021/cr0509915] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stéphane Guillarme
- Laboratoire de Glycosynthèse, UMR 6519, UFR Sciences Exactes et Naturelles, Bât. 18, BP 1039, 51687 Reims Cedex 2, France
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34
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El Kanzi NAA, Khalafallah AK, El Hamd A, Mohamed H, Soleiman SA. Compliancy of 1,4-Naphthoquinone for the Synthesis of New Heterocyclic Quinone Compounds Containing Imino Linkage. PHOSPHORUS SULFUR 2007. [DOI: 10.1080/10426500701242921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- N. A. A. El Kanzi
- a Chemistry Department, Faculty of Science , South Valley University , Aswan , Egypt
| | - A. K. Khalafallah
- a Chemistry Department, Faculty of Science , South Valley University , Aswan , Egypt
| | - Abu El Hamd
- a Chemistry Department, Faculty of Science , South Valley University , Aswan , Egypt
| | - H. Mohamed
- a Chemistry Department, Faculty of Science , South Valley University , Aswan , Egypt
| | - Soleiman A. Soleiman
- a Chemistry Department, Faculty of Science , South Valley University , Aswan , Egypt
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35
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36
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Yue D, Della Ca N, Larock RC. Syntheses of isochromenes and naphthalenes by electrophilic cyclization of acetylenic arenecarboxaldehydes. J Org Chem 2007; 71:3381-8. [PMID: 16626117 PMCID: PMC2586152 DOI: 10.1021/jo0524573] [Citation(s) in RCA: 137] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Highly substituted 1H-isochromenes, isobenzofurans, and pyranopyridines can be prepared by allowing o-(1-alkynyl)arenecarboxaldehydes and ketones to react with I2, ICl, NIS, Br2, NBS, p-O2NC6H4SCl, or PhSeBr and various alcohols or carbon-based nucleophiles at room temperature. Naphthyl ketones and iodides are also readily prepared by the reaction of 2-(1-alkynyl)arenecarboxaldehydes with I2 and simple olefins or alkynes.
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Affiliation(s)
- Dawei Yue
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
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Worlikar SA, Kesharwani T, Yao T, Larock RC. Synthesis of 3,4-disubstituted 2H-benzopyrans through C-C bond formation via electrophilic cyclization. J Org Chem 2007; 72:1347-53. [PMID: 17288382 PMCID: PMC2527782 DOI: 10.1021/jo062234s] [Citation(s) in RCA: 136] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The electrophilic cyclization of substituted propargylic aryl ethers by I2, ICl, and PhSeBr produces 3,4-disubstituted 2H-benzopyrans in excellent yields. This methodology results in vinylic halides or selenides under mild reaction conditions and tolerates a variety of functional groups, including methoxy, alcohol, aldehyde, and nitro groups.
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Affiliation(s)
| | - Tanay Kesharwani
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
| | - Tuanli Yao
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
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38
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Bi HP, Guo LN, Duan XH, Gou FR, Huang SH, Liu XY, Liang YM. Highly Regio- and Stereoselective Synthesis of Indene Derivatives via Electrophilic Cyclization. Org Lett 2007; 9:397-400. [PMID: 17249771 DOI: 10.1021/ol062683e] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] Indene or naphthalene derivatives are readily prepared in moderate to excellent yields with high regio- and stereoselectivity under very mild reaction conditions by the reaction of acetylenic malonates and ketones with I2, ICl, or NIS. The resulting iodides can be further elaborated using palladium-catalyzed coupling reactions.
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Affiliation(s)
- Hai-Peng Bi
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, and State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, P.R. China
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39
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Kesharwani T, Worlikar SA, Larock RC. Synthesis of 2,3-disubstituted benzo[b]selenophenes via electrophilic cyclization. J Org Chem 2006; 71:2307-12. [PMID: 16526778 PMCID: PMC2527062 DOI: 10.1021/jo0524268] [Citation(s) in RCA: 132] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
2,3-Disubstituted benzo[b]selenophenes have been prepared by the electrophilic cyclization of various 1-(1-alkynyl)-2-(methylseleno)arenes by Br2, NBS, I2, ICl, PhSeCl, PhSeBr, and Hg(OAc)2. This method tolerates a wide variety of functional groups, including alcohol, ester, nitrile, nitro, and silyl groups, and proceeds under exceptionally mild reaction conditions.
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Affiliation(s)
- Tanay Kesharwani
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
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41
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Heldreth B, Long TE, Jang S, Reddy GSK, Turos E, Dickey S, Lim DV. N-Thiolated beta-lactam antibacterials: effects of the N-organothio substituent on anti-MRSA activity. Bioorg Med Chem 2006; 14:3775-84. [PMID: 16480881 DOI: 10.1016/j.bmc.2006.01.029] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2005] [Revised: 01/13/2006] [Accepted: 01/16/2006] [Indexed: 11/29/2022]
Abstract
A study on the structure-activity profiles of N-thiolated beta-lactams 1 is reported which demonstrates the importance of the N-organothio moiety on antibacterial activity. Our results indicate that elongation of the N-alkylthio residue beyond two carbons, or extensive branching within the organothio substituent, diminishes antibacterial effects. Of the derivatives we examined, the N-sec-butylthio beta-lactam derivative 5g possesses the strongest growth inhibitory activity against methicillin-resistant Staphylococcus aureus strains. Sulfur oxidation state is important, as the N-sulfenyl and N-sulfinyl groups provide for the best antibacterial activity, while lactams bearing the N-sulfonyl or N-sulfonic acid functionalities have much weaker or no anti-MRSA properties. Stereochemistry within the organothio chain does not seem to be a significant factor, although for N-sec-butylthio beta-lactams 15a-d, the 3R,4S-lactams 15c, d are more active than the 3S,4R-stereoisomers 15a, b in agar diffusion experiments. The N-methylthio lactams are the most sensitive to the presence of glutathione, followed by N-ethylthio and N-sec-butylthio lactams, which indicates that bioactivity and perhaps bacterial selectivity of the lactams may be related to the amount of organothiols in the bacterial cell. These results support the empirical model for the mechanism of action of the compounds in which the lactam transverses the bacterial membrane to deliver the organothio moiety to its cellular target.
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Affiliation(s)
- Bart Heldreth
- Department of Chemistry, 4202 East Fowler Avenue, SCA 400, University of South Florida, Tampa, FL 33620, USA
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42
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Mishra RK, Revell KD, Coates CM, Turos E, Dickey S, Lim DV. N-thiolated 2-oxazolidinones: a new family of antibacterial agents for methicillin-resistant Staphylococcus aureus and Bacillus anthracis. Bioorg Med Chem Lett 2006; 16:2081-3. [PMID: 16464583 DOI: 10.1016/j.bmcl.2006.01.058] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2005] [Revised: 01/13/2006] [Accepted: 01/17/2006] [Indexed: 10/25/2022]
Abstract
In this report, we describe a new family of N-thiolated 2-oxazolidinones having antibacterial activity against methicillin-resistant Staphylococcus aureus and Bacillus anthracis. The effect of ring substituents and stereochemistry on antibacterial activity of these oxazolidinones closely parallels that previously reported for N-thiolated beta-lactam antibiotics.
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Affiliation(s)
- Rajesh Kumar Mishra
- Department of Chemistry, 4202 East Fowler Avenue, University of South Florida, Tampa, FL 33620, USA
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Jarrahpour A, Zarei M. Synthesis of novel N-sulfonyl monocyclic beta-lactams as potential antibacterial agents. Molecules 2006; 11:49-58. [PMID: 17962745 PMCID: PMC6148652 DOI: 10.3390/11010049] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2005] [Revised: 12/12/2005] [Accepted: 12/14/2005] [Indexed: 11/17/2022] Open
Abstract
New cis monocyclic beta-lactams were synthesized by [2+2] Staudinger cycloaddition reactions of the imine (3,4-dimethoxybenzylidene)-(4-methoxyphenyl)-amine and ketenes derived from different acyl chlorides and Et3N. These monocyclic beta-lactams were then cleaved by ceric ammonium nitrate (CAN) to give NH-monocyclic beta-lactams, which in turn were converted to N-sulfonyl monocyclic beta-lactams by treatment with four different sulfonyl chlorides in the presence of Et3N and 4,4-dimethyl-aminopyridine (DMAP).
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Affiliation(s)
- Aliasghar Jarrahpour
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran.
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45
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Zhou C, Dubrovsky AV, Larock RC. Diversity-Oriented Synthesis of 3-Iodochromones and Heteroatom Analogues via ICl-Induced Cyclization. J Org Chem 2006; 71:1626-32. [PMID: 16468816 DOI: 10.1021/jo0523722] [Citation(s) in RCA: 120] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The ICl-induced cyclization of heteroatom-substituted alkynones provides a simple, highly efficient approach to various 3-iodochromones and analogues. This process is run under mild conditions, tolerates various functional groups, and generally provides chromones in good to excellent yields. Subsequent palladium-catalyzed transformations afford a rapid increase in molecular complexity and a convenient preparation of a wide range of functionally substituted chromones, furans, and polycyclic compounds. Iodothiochromenones and iodoquinolinones are also prepared by similar ICl-induced cyclizations.
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Affiliation(s)
- Chengxiang Zhou
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
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46
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Yue D, Yao T, Larock RC. Synthesis of 3-iodoindoles by the Pd/Cu-catalyzed coupling of N,N-dialkyl-2-iodoanilines and terminal acetylenes, followed by electrophilic cyclization. J Org Chem 2006; 71:62-9. [PMID: 16388618 PMCID: PMC2556959 DOI: 10.1021/jo051549p] [Citation(s) in RCA: 139] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] 3-Iodoindoles have been prepared in excellent yields by coupling terminal acetylenes with N,N-dialkyl-o-iodoanilines in the presence of a Pd/Cu catalyst, followed by an electrophilic cyclization of the resulting N,N-dialkyl-o-(1-alkynyl)anilines using I2 in CH2Cl2. Aryl-, vinylic-, alkyl-, and silyl-substituted terminal acetylenes undergo this process to produce excellent yields of 3-iodoindoles. The reactivity of the carbon-nitrogen bond cleavage during cyclization follows the following order: Me > n-Bu, Me > Ph, and cyclohexyl > Me. Subsequent palladium-catalyzed Sonogashira, Suzuki, and Heck reactions of the resulting 3-iodoindoles proceed smoothly in good yields.
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Affiliation(s)
- Dawei Yue
- Department of Chemistry, Iowa State University, Ames, IA 50011,
| | - Tuanli Yao
- Department of Chemistry, Iowa State University, Ames, IA 50011,
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47
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Hessian KO, Flynn BL. Selective endo and exo Iodocyclizations in the Synthesis of Quinolines and Indoles. Org Lett 2005; 8:243-6. [PMID: 16408885 DOI: 10.1021/ol052518j] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] A simple, efficient method for a divergent synthesis of indoles, quinolines, and quinolinones using a highly selective endo/exo iodocyclization procedure is described.
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Affiliation(s)
- Karl O Hessian
- Department of Medicinal Chemistry, Victorian College of Pharmacy, Monash University, Parkville, Australia
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48
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Zhao L, Liang F, Bi X, Sun S, Liu Q. Efficient Synthesis of Highly Functionalized Dihydropyrido[2,3-d]pyrimidines by a Double Annulation Strategy from α-Alkenoyl-α-carbamoyl Ketene-(S,S)-acetals. J Org Chem 2005; 71:1094-8. [PMID: 16438526 DOI: 10.1021/jo0522106] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A convenient and efficient synthesis of highly functionalized dihydropyrido[2,3-d]pyrimidines via a double [5 + 1] annulation strategy starting from easily available alpha-alkenoyl-alpha-carbamoyl ketene-(S,S)-acetals 1 and cheap reagents (NH4OAc, DMF, and POCl3) has been developed. In the first step of the double annulation route, 2-amino-3-carbamoyl-5,6-dihydro-4-pyridones 2 were created in high to excellent yields by a formal [5C + 1N] annulation reaction of ketene-(S,S)-acetals 1 with ammonia (from ammonium acetate). In the second step of the double annulation strategy, the highly functionalized dihydropyrido[2,3-d]pyrimidine derivatives, 7,8-dihydropyrido[2,3-d]pyrimidin-4(3H)-ones 3 (when R1 = aryl) and 7,8-dihydropyrido[2,3-d]pyrimidines 4 (when R1 = H), were constructed, respectively, in fair to good yields by reacting 2 with excessive Vilsmeier reagent (DMF/POCl3). A mechanism involved in the second [5 + 1] annulation step, including a formal [5 + 1] annulation and accompanied chlorovinylation, chloroformylation, amination, and aromatization reactions, is proposed.
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Affiliation(s)
- Lei Zhao
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
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49
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Abstract
[reaction: see text] A variety of 3,5-disubstituted 4-halo(seleno)isoxazoles are readily prepared in good to excellent yields under mild reaction conditions by the reaction of 2-alkyn-1-one O-methyl oximes with ICl, I2, Br2, or PhSeBr.
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Affiliation(s)
- Jesse P Waldo
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
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50
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Turos E, Coates C, Shim JY, Wang Y, Leslie JM, Long TE, Reddy GSK, Ortiz A, Culbreath M, Dickey S, Lim DV, Alonso E, Gonzalez J. N-Methylthio beta-lactam antibacterials: effects of the C3/C4 ring substituents on anti-MRSA activity. Bioorg Med Chem 2005; 13:6289-308. [PMID: 16185880 DOI: 10.1016/j.bmc.2005.08.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2004] [Revised: 03/31/2005] [Accepted: 03/31/2005] [Indexed: 11/18/2022]
Abstract
N-Thiolated beta-lactams are a new family of antibacterials that inhibit the growth of Staphylococcus bacteria. Unlike other beta-lactam drugs, these compounds retain their full antibacterial activity against methicillin-resistant Staphylococcus aureus (MRSA) strains and operate through a different mode of action. The structural features, which give these lactams their biological activity, have not yet been completely defined. Earlier efforts in our laboratory established that the N-organothio substituent is essential for antimicrobial activity while other groups at C(3) and C(4) on the lactam ring play a more subtle role. In this present study, we investigate these effects by varying the polar and steric nature of the ring substituents at these two centers. From the data presented herein, it appears that there is a need to balance the lipophilic character of the C(3)/C(4) groups to obtain an optimal anti-MRSA activity. The structure-bioactivity profiles more closely relate to the compound's ability to penetrate the bacterial cell membrane to sites of action within the cytoplasm rather than to any specific non-bonding interactions with a biological target. Based on these results, a model for the compounds' mode of action is presented.
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Affiliation(s)
- Edward Turos
- Department of Chemistry, University of South Florida, Tampa, 33620, USA.
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