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Ferla S, Manganaro R, Benato S, Paulissen J, Neyts J, Jochmans D, Brancale A, Bassetto M. Rational modifications, synthesis and biological evaluation of new potential antivirals for RSV designed to target the M2-1 protein. Bioorg Med Chem 2020; 28:115401. [PMID: 32143992 DOI: 10.1016/j.bmc.2020.115401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 02/21/2020] [Indexed: 11/27/2022]
Abstract
Respiratory syncytial virus (RSV) is the main cause of lower respiratory tract diseases in infants and young children, with potentially serious and fatal consequences associated with severe infections. Despite extensive research efforts invested in the identification of therapeutic measures, no vaccine is currently available, while treatment options are limited to ribavirin and palivizumab, which both present significant limitations. While clinical and pre-clinical candidates mainly target the viral fusion protein, the nucleocapsid protein or the viral polymerase, our focus has been the identification of new antiviral compounds targeting the viral M2-1 protein, thanks to the presence of a zinc-ejecting group in their chemical structure. Starting from an anti-RSV hit we had previously identified with an in silico structure-based approach, we have designed, synthesised and evaluated a new series of dithiocarbamate analogues, with which we have explored the antiviral activity of this scaffold. The findings presented in this work may provide the basis for the identification of a new antiviral lead to treat RSV infections.
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Affiliation(s)
- Salvatore Ferla
- Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff, King Edward VII Avenue, Cardiff CF103NB, UK.
| | - Roberto Manganaro
- Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff, King Edward VII Avenue, Cardiff CF103NB, UK
| | - Sara Benato
- Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff, King Edward VII Avenue, Cardiff CF103NB, UK
| | - Jasmine Paulissen
- KU Leuven - Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Johan Neyts
- KU Leuven - Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Dirk Jochmans
- KU Leuven - Department of Microbiology, Immunology and Transplantation, Rega Institute, Laboratory of Virology and Chemotherapy, Leuven, Belgium
| | - Andrea Brancale
- Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff, King Edward VII Avenue, Cardiff CF103NB, UK
| | - Marcella Bassetto
- Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff, King Edward VII Avenue, Cardiff CF103NB, UK; Department of Chemistry, Swansea University, Swansea, UK
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2
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Chen M, Bai X, Qi Z, Xiang S, Zuo H, Choi K, Shin D. Novel Rhodamine B and 2
H
‐benzo[
b
][1,4]oxazin‐3(4
H
)‐one‐derived Fluorescent Sensor for Low pH Value Detection. B KOREAN CHEM SOC 2019. [DOI: 10.1002/bkcs.11819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mingjun Chen
- College of Teacher EducationChongqing Three Gorges University Chongqing 404000 China
| | - Xueke Bai
- College of Pharmaceutical SciencesSouthwest University Chongqing 400715 China
| | - Zhenping Qi
- College of Pharmaceutical SciencesSouthwest University Chongqing 400715 China
| | - Shoubo Xiang
- The West China College of MedicineSichuan University Sichuan 610041 China
| | - Hua Zuo
- College of Pharmaceutical SciencesSouthwest University Chongqing 400715 China
| | - Kyung‐Min Choi
- Department of ChemistryChangwon National University Changwon 641‐773 South Korea
| | - Dong‐Soo Shin
- Department of ChemistryChangwon National University Changwon 641‐773 South Korea
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3
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Xiang Y, Wang XH, Yang Q, Tan JL, Jang HJ, Zuo H, Shin DS. Rational Design, Synthesis, and Biological Activity ofN-(1,4-Benzoxazinone)Acetamide Derivatives as Potent Platelet Aggregation Inhibitors. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11359] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Yi Xiang
- Department of Thoracic surgery; Fourth People's Hospital of Sichuan Province; Chengdu 610016 China
| | - Xiu-Hua Wang
- College of Pharmaceutical Sciences; Southwest University; Chongqing 400715 China
- Department of Pharmacy; The 251 Hospital of People's Liberation Army of China; Zhangjiakou 075000 China
| | - Quan Yang
- Department of Thoracic surgery; Fourth People's Hospital of Sichuan Province; Chengdu 610016 China
| | - Jia-Lian Tan
- College of Pharmaceutical Sciences; Southwest University; Chongqing 400715 China
| | - Hee-Jae Jang
- Department of Chemistry; Changwon National University; Changwon 641-773 Korea
| | - Hua Zuo
- College of Pharmaceutical Sciences; Southwest University; Chongqing 400715 China
| | - Dong-Soo Shin
- Department of Chemistry; Changwon National University; Changwon 641-773 Korea
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4
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Śmist M, Kwiecień H, Krawczyk M. Synthesis and antifungal activity of 2H-1,4-benzoxazin-3(4H)-one derivatives. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2016; 51:393-401. [PMID: 26963527 DOI: 10.1080/03601234.2016.1142744] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A series of 2-alkyl-2H-1,4-benzoxazin-3(4H)-ones (4a-l) was easily synthesized by two-step process involving O-alkylation of 2-nitrophenols with methyl 2-bromoalkanoates and next "green" catalytic reductive cyclization of the obtained 2-nitro ester intermediates (3a-l). Further, 6,7-dibromo (5a-c) and N-acetyl (6) derivatives were prepared by bromination and acetylation of unsubstituted 2-alkyl-2H-1,4-benzoxazin-3(4H)-ones (4a-c). The novel compounds (3a-l, 4d-l, 5a-c and 6) were fully characterized by spectroscopic methods (MS, (1)H and (13)C NMR). 2-Alkyl-2H-1,4-benzoxazin-3(4H)-ones (4a-l, 5a-c and 6) were screened for antifungal activity. Preliminary assays were performed using two methods: in vitro against seven phytopathogenic fungi-Botrytis cinerea, Phythophtora cactorum, Rhizoctonia solani, Phoma betae, Fusarium culmorum, Fusarium oxysporum and Alternaria alternata-and in vivo against barley powdery mildew Blumeria graminis. The tested compounds displayed moderate to good antifungal activity at high concentration (200 mg L(-1)). The most potent compounds were 2-ethyl-2H-1,4-benzoxazin-3(4H)-one (4a), 2-ethyl-7-fluoro-2H-1,4-benzoxazin-3(4H)-one (4g) and 4-acetyl-2-ethyl-2H-1,4-benzoxazin-3(4H)-one (6), which completely inhibited the mycelial growth of seven agricultural fungi at the concentration of 200 mg L(-1) in the in vitro tests. Moreover, 2-ethyl-2H-1,4-benzoxazin-3(4H)-one (4a) and 4-acetyl-2-ethyl-2H-1,4-benzoxazin-3(4H)-one (6) were also screened for antifungal activity at concentrations of 100 mg L(-1) and 20 mg L(-1). In the concentration of 100 mg L(-1), the N-acetyl derivative (6) completely inhibited the growth of three strains of fungi (F. culmorum, P. cactorum and R. solani), while 2-ethyl-2H-1,4-benzoxazin-3(4H)-one (4a) completely inhibited only R. solani strain. At the concentration of 20 mg L(-1), compound 6 showed good activity only against P. cactorum strain (72%).
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Affiliation(s)
- Małgorzata Śmist
- a Institute of Chemical Organic Technology, West Pomeranian University of Technology , Szczecin , Poland
| | - Halina Kwiecień
- a Institute of Chemical Organic Technology, West Pomeranian University of Technology , Szczecin , Poland
| | - Maria Krawczyk
- b Department of Applications and Formulation of Pesticides , Institute of Industrial Organic Chemistry , Warsaw , Poland
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Alapour S, Ramjugernath D, Koorbanally NA. Copper-catalysed cross-coupling affected by the Smiles rearrangement: a new chapter on diversifying the synthesis of chiral fluorinated 1,4-benzoxazine derivatives. RSC Adv 2015. [DOI: 10.1039/c5ra18897k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of novel derivatives of fluorinated benzoxazines was achieved through the Smiles rearrangement. The gauche conformation of selected precursors enabled the reaction to occur at room temperature at yields of 90%.
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Affiliation(s)
- Saba Alapour
- School of Chemistry
- University of KwaZulu-Natal
- Durban 4000
- South Africa
| | - Deresh Ramjugernath
- School of Chemical Engineering
- University of KwaZulu-Natal
- Durban 4000
- South Africa
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6
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The synthesis of 4,7-disubstituted-2H-benzo[b][1,4]-oxazin-3(4H)-ones using Smiles rearrangement and their in vitro evaluation as platelet aggregation inhibitors. Bioorg Med Chem Lett 2014; 24:1479-83. [PMID: 24565904 DOI: 10.1016/j.bmcl.2014.02.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 01/31/2014] [Accepted: 02/04/2014] [Indexed: 11/21/2022]
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7
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Ganguly NC, Mondal P, Roy S, Mitra P. Ligand-free copper-catalyzed efficient one-pot access of benzo[b]pyrido[3,2-f][1,4]oxazepinones through O-heteroarylation-Smiles rearrangement-cyclization cascade. RSC Adv 2014. [DOI: 10.1039/c4ra11128a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
An optimized protocol towards synthesis of benzopyrido[1,4]oxazepinones of potential biological relevance is achieved by coupling of N-substituted-o-chloronicotinamides and o-halogenated naphthols/phenols.
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Affiliation(s)
- Nemai C. Ganguly
- Department of Chemistry
- University of Kalyani
- Kalyani 741235, India
| | - Pallab Mondal
- Department of Chemistry
- University of Kalyani
- Kalyani 741235, India
| | - Sushmita Roy
- Department of Chemistry
- University of Kalyani
- Kalyani 741235, India
| | - Partha Mitra
- Department of Inorganic Chemistry
- Indian Association for the Cultivation of Science
- Kolkata 700032, India
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8
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Xie YS, Vijaykumar B, Jang K, Choi KM, Zuo H, Yoon YJ, Shin DS. Smiles Rearrangement Based Practical One-pot Synthesis of N-Alkyl/aryl-6-aminoquinolines from 6-Hydroxylquinoline. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.12.3881] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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9
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Meng LJ, Zuo H, Vijaykumar B, Dupati G, Choi KM, Jang K, Yoon YJ, Shin DS. Microwave Synthesis of Chiral N-Benzyl-2-methyl-2H-benzo[b][1,4]oxazin/thiazin-3(4H)-ones via Smiles Rearrangement and their Biological Evaluation. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.2.585] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Sharifi A, Barazandeh M, Abaee MS, Mirzaei M. K2CO3/H2O in [omim][BF4] Ionic Liquid: A Green Medium for Efficient Room-Temperature Synthesis ofN-Substituted 1,4-Benzoxazin-3-ones. J Heterocycl Chem 2012. [DOI: 10.1002/jhet.866] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ali Sharifi
- Organic Chemistry Department; Chemistry & Chemical Engineering Research Center of Iran; Tehran; Iran
| | - Mehdi Barazandeh
- Organic Chemistry Department; Chemistry & Chemical Engineering Research Center of Iran; Tehran; Iran
| | - M. Saeed Abaee
- Organic Chemistry Department; Chemistry & Chemical Engineering Research Center of Iran; Tehran; Iran
| | - Mojtaba Mirzaei
- Organic Chemistry Department; Chemistry & Chemical Engineering Research Center of Iran; Tehran; Iran
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11
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Zhan C, Jia J, Yang B, Huang A, Liu Y, Ma C. A tandem coupling/smiles rearrangement/cyclization approach to 1,4-benzooxazinones or 1,4-pyridooxazinones under mild conditions. RSC Adv 2012. [DOI: 10.1039/c2ra20334k] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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12
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Yin F, Feng G, Song Q, Qi C. Pd-Catalysed One-Pot Synthesis of 2H-1,4-benzoxazin-3-(4H)-ones from o-halophenols and 2-chloroacetamides. JOURNAL OF CHEMICAL RESEARCH 2012. [DOI: 10.3184/174751912x13263685422317] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A Pd-catalysed cascade protocol, consisting of intermolecular O-alkylation and spontaneous intramolecular amidation, has been established for efficient synthesis of 2 H-1,4-benzoxazin-3-(4 H)-ones from o-halophenols and 2-chloroacetamides. A varity of substrates afford the desired products in good to excellent yields. It is particularly attractive for synthesis of a library of 2 H-1,4-benzoxazin-3-(4 H)-ones.
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Affiliation(s)
- Fangling Yin
- College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou, 310027, P. R. China
| | - Gaofeng Feng
- The Institute of Applied Chemistry, Shaoxing University, Shaoxing, 312050, P. R. China
| | - Qingbao Song
- College of Chemical Engineering and Material Science, Zhejiang University of Technology, Hangzhou, 310027, P. R. China
| | - Chenze Qi
- The Institute of Applied Chemistry, Shaoxing University, Shaoxing, 312050, P. R. China
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13
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Synthesis of 2H-benzo[b][1,4]oxazin-3(4H)-one derivatives as platelet aggregation inhibitors. Bioorg Med Chem Lett 2012; 22:204-6. [DOI: 10.1016/j.bmcl.2011.11.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Revised: 10/20/2011] [Accepted: 11/09/2011] [Indexed: 11/24/2022]
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14
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Pudlo M, Allart-Simon I, Tinant B, Gérard S, Sapi J. First domino radical cyclisation/Smiles rearrangement combination. Chem Commun (Camb) 2012; 48:2442-4. [DOI: 10.1039/c2cc15670a] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Ramesh C, Raju BR, Kavala V, Kuo CW, Yao CF. A simple and facile route for the synthesis of 2H-1,4-benzoxazin-3-(4H)-ones via reductive cyclization of 2-(2-nitrophenoxy)acetonitrile adducts in the presence of Fe/acetic acid. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.11.095] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Fang L, Zuo H, Li ZB, He XY, Wang LY, Tian X, Zhao BX, Miao JY, Shin DS. Synthesis of benzo[b][1,4]oxazin-3(4H)-ones via smiles rearrangement for antimicrobial activity. Med Chem Res 2010. [DOI: 10.1007/s00044-010-9360-z] [Citation(s) in RCA: 8] [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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17
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Sharifi A, Barazandeh M, Saeed Abaee M, Mirzaei M. [Omim][BF4], a green and recyclable ionic liquid medium for the one-pot chemoselective synthesis of benzoxazinones. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.01.122] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Wang T, Nibbering NMM, Bowie JH. The gas phase Smiles rearrangement of anions PhO(CH2)nO− (n = 2–4). A joint theoretical and experimental approach. Org Biomol Chem 2010; 8:4080-4. [DOI: 10.1039/c0ob00064g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Yang H, Fang L, Li ZB, Ren FK, Wang LY, Tian X, Shin DS, Zuo H. Synthesis and in vitro antimicrobial activity of benzo[b][1,4]thiazin-3(4H)-ones via smiles rearrangement. Med Chem Res 2009. [DOI: 10.1007/s00044-009-9288-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Patriciu OI, Fînaru AL, Massip S, Leger JM, Jarry C, Guillaumet G. Smiles Rearrangement as a Tool for the Preparation of Dihydrodipyridopyrazines. Org Lett 2009; 11:5502-5. [DOI: 10.1021/ol902369v] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Oana-Irina Patriciu
- Institut de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR CNRS 6005, BP 6759, rue de Chartres, 45067 Orléans Cedex 2, France, Laboratorul de Sinteză Organică şi Analiză Structurală, Universitatea din Bacău, 157, Calea Mărăşeşti, 600115 Bacău, România, and EA 4138, Pharmacochimie, Université Victor Segalen Bordeaux 2, 146, rue Leo Saignat, 33076 Bordeaux Cedex, France
| | - Adriana-Luminita Fînaru
- Institut de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR CNRS 6005, BP 6759, rue de Chartres, 45067 Orléans Cedex 2, France, Laboratorul de Sinteză Organică şi Analiză Structurală, Universitatea din Bacău, 157, Calea Mărăşeşti, 600115 Bacău, România, and EA 4138, Pharmacochimie, Université Victor Segalen Bordeaux 2, 146, rue Leo Saignat, 33076 Bordeaux Cedex, France
| | - Stéphane Massip
- Institut de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR CNRS 6005, BP 6759, rue de Chartres, 45067 Orléans Cedex 2, France, Laboratorul de Sinteză Organică şi Analiză Structurală, Universitatea din Bacău, 157, Calea Mărăşeşti, 600115 Bacău, România, and EA 4138, Pharmacochimie, Université Victor Segalen Bordeaux 2, 146, rue Leo Saignat, 33076 Bordeaux Cedex, France
| | - Jean-Michel Leger
- Institut de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR CNRS 6005, BP 6759, rue de Chartres, 45067 Orléans Cedex 2, France, Laboratorul de Sinteză Organică şi Analiză Structurală, Universitatea din Bacău, 157, Calea Mărăşeşti, 600115 Bacău, România, and EA 4138, Pharmacochimie, Université Victor Segalen Bordeaux 2, 146, rue Leo Saignat, 33076 Bordeaux Cedex, France
| | - Christian Jarry
- Institut de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR CNRS 6005, BP 6759, rue de Chartres, 45067 Orléans Cedex 2, France, Laboratorul de Sinteză Organică şi Analiză Structurală, Universitatea din Bacău, 157, Calea Mărăşeşti, 600115 Bacău, România, and EA 4138, Pharmacochimie, Université Victor Segalen Bordeaux 2, 146, rue Leo Saignat, 33076 Bordeaux Cedex, France
| | - Gérald Guillaumet
- Institut de Chimie Organique et Analytique (ICOA), Université d’Orléans, UMR CNRS 6005, BP 6759, rue de Chartres, 45067 Orléans Cedex 2, France, Laboratorul de Sinteză Organică şi Analiză Structurală, Universitatea din Bacău, 157, Calea Mărăşeşti, 600115 Bacău, România, and EA 4138, Pharmacochimie, Université Victor Segalen Bordeaux 2, 146, rue Leo Saignat, 33076 Bordeaux Cedex, France
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Maclean MJ, Walker S, Wang T, Eichinger PCH, Sherman PJ, Bowie JH. Diagnostic fragmentations of adducts formed between carbanions and carbon disulfide in the gas phase. A joint experimental and theoretical study. Org Biomol Chem 2009; 8:371-7. [PMID: 20066272 DOI: 10.1039/b916477d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Selected carbanions react with carbon disulfide in a modified LCQ ion trap mass spectrometer to form adducts, which when collisionally activated, decompose by processes which in some cases identify the structures of the original carbanions. For example (i) C(6)H(5)(-) + CS(2)--> C(6)H(5)CS(2)(-)--> C(6)H(5)S(-) + CS, occurs through a 3-membered ring ipso transition state, and (ii) the reaction between C(6)H(5)CH(2)(-) and CS(2) gives an adduct which loses H(2)S, whereas the adduct(s) formed between o-CH(3)C(6)H(5)(-) and CS(2) loses H(2)S and CS. Finally, it is shown that decarboxylation of C(6)H(5)CH(2)CH(2)CO(2)(-) produces the beta-phenylethyl anion (PhCH(2)CH(2)(-)), and that this thermalized anion reacts with CS(2) to form C(6)H(5)CH(2)CH(2)CS(2)(-) which when energized fragments specifically by the process C(6)H(5)CH(2)CH(2)CS(2)(-)--> C(6)H(5)CH(2)(-)CHC(S)SH --> [(C(6)H(5)CH(2)CH[double bond, length as m-dash]C[double bond, length as m-dash]S) (-)SH] --> C(6)H(5)CH(2)CCS(-) + H(2)S. Experimental findings of processes (ii) and (iii) were aided by deuterium labelling studies, and all reaction profiles were studied by theoretical calculations at the UCCSD(T)/6-31+G(d,p)//B3LYP/6-31+G(d,p) level of theory unless indicated to the contrary.
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Affiliation(s)
- Micheal J Maclean
- Department of Chemistry, The University of Adelaide, South Australia, 5005, Australia
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22
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Solid-phase Synthesis of 7-Aryl-benzo[b][1,4]oxazin-3(4H)-one Derivatives on a BOMBA Resin Utilizing the Smiles Rearrangement. B KOREAN CHEM SOC 2009. [DOI: 10.5012/bkcs.2009.30.6.1325] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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23
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Li ZB, Yang H, Xie YS, Zhao CG. 4-Benzyl-7-chloro-2H-1,4-benz-oxazin-3(4H)-one. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o1019. [PMID: 21583841 PMCID: PMC2977705 DOI: 10.1107/s1600536809012586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2009] [Accepted: 04/03/2009] [Indexed: 11/10/2022]
Abstract
In the title compound, C15H12ClNO2, the two benzene rings are nearly perpendicular to each other [dihedral angle = 89.99 (13)°]. The O atom of the six-membered heterocyclic ring is disordered over two sites in a ratio of 0.46 (4):0.54 (4) and is displaced from the mean plane formed by other five atoms, resulting an envelope conformation of the six-membered hetercycle ring.
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Li ZB, He XY, Dong WL, Liao DD. 8-Chloro-4-cyclo-hexyl-2H-1,4-benzoxazin-3(4H)-one. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o762. [PMID: 21582492 PMCID: PMC2968852 DOI: 10.1107/s1600536809008423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2009] [Accepted: 03/07/2009] [Indexed: 05/26/2023]
Abstract
In the crystal structure of title compound, C(14)H(16)ClNO(2), the cyclo-hexyl ring is in a chair conformation. The molecules are connected into centrosymmetric dimers via weak C-H⋯O hydrogen bonds.
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Chen MJ, Yang H, Dong WL, Zuo H, Zhou JZ. 7-Chloro-4-phenethyl-2H-1,4-benzoxazin-3(4H)-one. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o712. [PMID: 21582449 PMCID: PMC2968783 DOI: 10.1107/s1600536809007739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2009] [Accepted: 03/03/2009] [Indexed: 11/10/2022]
Abstract
In the crystal structure of title compound, C(16)H(14)ClNO(2), the dihedral angle between the aromatic rings is 4.2 (2)°.
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Feng E, Huang H, Zhou Y, Ye D, Jiang H, Liu H. Copper(I)-Catalyzed One-Pot Synthesis of 2H-1,4-Benzoxazin-3-(4H)-ones from o-Halophenols and 2-Chloroacetamides. J Org Chem 2009; 74:2846-9. [DOI: 10.1021/jo802818s] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Enguang Feng
- The Center for Drug Discovery and Design, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 201203, China, and School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - He Huang
- The Center for Drug Discovery and Design, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 201203, China, and School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Yu Zhou
- The Center for Drug Discovery and Design, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 201203, China, and School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Deju Ye
- The Center for Drug Discovery and Design, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 201203, China, and School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Hualiang Jiang
- The Center for Drug Discovery and Design, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 201203, China, and School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Hong Liu
- The Center for Drug Discovery and Design, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, 201203, China, and School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
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Zuo H, Li ZB, Ren FK, Falck J, Lijuan M, Ahn C, Shin DS. Microwave-assisted one-pot synthesis of benzo[b][1,4]thiazin-3(4H)-ones via Smiles rearrangement. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.07.059] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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28
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Sapegin AV, Sakharov VN, Kalandadze LS, Smirnov AV, Khristolyubova TA, Plakhtinskii VV, Ivashchenko AV. Synthesis of dibenzo[b,f][1,4]oxazepin-11(10H)-one and pyrido[2,3-b][1,4]benzoxazepin-10(11H)-one compounds based on o-nitrochloro derivatives of benzene and pyridine. MENDELEEV COMMUNICATIONS 2008. [DOI: 10.1016/j.mencom.2008.09.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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