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Quevedo-Acosta Y, Jurberg ID, Gamba-Sánchez D. Cyclization Strategies Using Imide Derivatives for the Synthesis of Polycyclic Nitrogen‐Containing Compounds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Igor D. Jurberg
- Universidade Estadual de Campinas Institute of Chemistry 13083 BRAZIL
| | - Diego Gamba-Sánchez
- Universidad de Los Andes Chemistry Department Cra 1 No. 18A-12 Q:305 111711 Bogota COLOMBIA
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Ahmed A, Sakander N, Rasool F, Hussain N, Mukherjee D. Diastereoselective synthesis of glycopyrans 1,2-annulated with dioxazinanes from 1,2-anhydrosugars and N-substituted nitrones. Org Biomol Chem 2022; 20:1436-1443. [PMID: 35081611 DOI: 10.1039/d1ob02310a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,2-Annulated pyranose sugars fused with six membered rings have emerged as an important class of carbohydrates with wide biological and synthetic utility. We now describe zinc chloride catalyzed one pot diastereoselective synthesis of sugar fused dioxazinanes from 1,2-anhydro sugars and N-substituted aromatic nitrones. Various aromatic nitrones with different substituents undergo the reaction smoothly. The developed strategy works well with both ester and ether protection on the sugar and proceeds under mild reaction conditions. The mechanism seems to involve activation of the anhydrosugar by ZnCl2 for nucleophilic attack by the nitrone followed by cyclization.
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Affiliation(s)
- Ajaz Ahmed
- Natural Product and Medicinal Chemistry Division, Indian Institute of Integrative Medicine (IIIM), Jammu-180001, India. .,Academy of Scientific and Innovative Research (AcSIR-IIIM), Jammu-180001, India
| | - Norein Sakander
- Natural Product and Medicinal Chemistry Division, Indian Institute of Integrative Medicine (IIIM), Jammu-180001, India. .,Academy of Scientific and Innovative Research (AcSIR-IIIM), Jammu-180001, India
| | - Faheem Rasool
- Natural Product and Medicinal Chemistry Division, Indian Institute of Integrative Medicine (IIIM), Jammu-180001, India. .,Department of Chemistry, Govt. College for Women, Parade Ground, Jammu-180001, India.,Higher Education Department, Govt. of Jammu and Kashmir, India
| | - Nazar Hussain
- Natural Product and Medicinal Chemistry Division, Indian Institute of Integrative Medicine (IIIM), Jammu-180001, India. .,Department of Medicinal Chemistry, Faculty of Ayurveda, Instituteof Medical Sciences, Banaras Hindu University, Varanasi-221005, India
| | - Debaraj Mukherjee
- Natural Product and Medicinal Chemistry Division, Indian Institute of Integrative Medicine (IIIM), Jammu-180001, India. .,Academy of Scientific and Innovative Research (AcSIR-IIIM), Jammu-180001, India
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Dharuman S, Vankar YD. N-Halosuccinimide/AgNO3-Efficient Reagent Systems for One-Step Synthesis of 2-Haloglycals from Glycals: Application in the Synthesis of 2C-Branched Sugars via Heck Coupling Reactions. Org Lett 2014; 16:1172-5. [DOI: 10.1021/ol500039s] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Suresh Dharuman
- Department of Chemistry, Indian Institute of Technology, Kanpur 208 016, India
| | - Yashwant D. Vankar
- Department of Chemistry, Indian Institute of Technology, Kanpur 208 016, India
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Xu Y, Wang W, Cai Y, Yang X, Wang PG, Zhao W. A convenient and efficient synthesis of glycals by zinc nanoparticles. RSC Adv 2014. [DOI: 10.1039/c4ra08028a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
A simple and efficient method for the synthesis of pyranoid glycals utilizing the reductive elimination of glycopyranosyl bromides by zinc nanoparticles in an acetate buffer is described. A variety of pyranoid glycal derivatives were obtained, especially for the synthesis of 6-deoxy-4,6-O-benzylidene and disaccharide glycals with good yields.
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Affiliation(s)
- Yun Xu
- College of Pharmacy
- State Key Laboratory of Elemento-Organic Chemistry
- Synergetic Innovation Center of Chemical Science and Engineering
- Nankai University
- Tianjin 300071, PR China
| | - Wenjun Wang
- College of Pharmacy
- State Key Laboratory of Elemento-Organic Chemistry
- Synergetic Innovation Center of Chemical Science and Engineering
- Nankai University
- Tianjin 300071, PR China
| | - Yu Cai
- College of Pharmacy
- State Key Laboratory of Elemento-Organic Chemistry
- Synergetic Innovation Center of Chemical Science and Engineering
- Nankai University
- Tianjin 300071, PR China
| | - Xia Yang
- College of Pharmacy
- State Key Laboratory of Elemento-Organic Chemistry
- Synergetic Innovation Center of Chemical Science and Engineering
- Nankai University
- Tianjin 300071, PR China
| | - Peng George Wang
- College of Pharmacy
- State Key Laboratory of Elemento-Organic Chemistry
- Synergetic Innovation Center of Chemical Science and Engineering
- Nankai University
- Tianjin 300071, PR China
| | - Wei Zhao
- College of Pharmacy
- State Key Laboratory of Elemento-Organic Chemistry
- Synergetic Innovation Center of Chemical Science and Engineering
- Nankai University
- Tianjin 300071, PR China
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Awan SI, Werz DB. Syntheses of 1,2-annulated and 1-spiroannulated carbohydrate derivatives: Recent developments. Bioorg Med Chem 2012; 20:1846-56. [DOI: 10.1016/j.bmc.2011.10.089] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 10/20/2011] [Accepted: 10/30/2011] [Indexed: 01/09/2023]
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