1
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Zhang J, Reintjens NRM, Dhineshkumar J, Witte MD, Minnaard AJ. Site-Selective Dehydroxy-Chlorination of Secondary Alcohols in Unprotected Glycosides. Org Lett 2022; 24:5339-5344. [PMID: 35848103 PMCID: PMC9490796 DOI: 10.1021/acs.orglett.2c01992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
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To circumvent protecting groups, the site-selective modification
of unprotected glycosides is intensively studied. We show that site-selective
oxidation, followed by treatment of the corresponding trityl hydrazone
with tert-butyl hypochlorite and a H atom donor provides
an effective way to introduce a chloride substituent in a variety
of mono- and disaccharides. The stereoselectivity can be steered,
and a new geminal dichlorination reaction is described as well. This
strategy challenges existing methods that lead to overchlorination.
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Affiliation(s)
- Ji Zhang
- Stratingh Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Niels R. M. Reintjens
- Stratingh Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Jayaraman Dhineshkumar
- Stratingh Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Martin D. Witte
- Stratingh Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Adriaan J. Minnaard
- Stratingh Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
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2
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Siddiqui AM, Khalid A, Khan A, Azad CS, Samim M, Khan IA. N‐Heterocyclic Carbene/Cobalt Cooperative Catalysis for the Chemo‐ and Regioselective C−N Bond Formation between Aldehyde and Amines/Amides. ChemCatChem 2020. [DOI: 10.1002/cctc.202000156] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Asher M. Siddiqui
- Department of Chemistry School of Chemical and Life Sciences Jamia Hamdard New Delhi 110062 India
| | - Anam Khalid
- Department of Chemistry School of Chemical and Life Sciences Jamia Hamdard New Delhi 110062 India
| | - Arif Khan
- Department of Chemistry School of Chemical and Life Sciences Jamia Hamdard New Delhi 110062 India
| | - Chandra S. Azad
- School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 P.R. China
| | - Mohd. Samim
- Department of Chemistry School of Chemical and Life Sciences Jamia Hamdard New Delhi 110062 India
| | - Imran A. Khan
- Department of Chemistry School of Chemical and Life Sciences Jamia Hamdard New Delhi 110062 India
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3
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Longwitz L, Jopp S, Werner T. Organocatalytic Chlorination of Alcohols by P(III)/P(V) Redox Cycling. J Org Chem 2019; 84:7863-7870. [DOI: 10.1021/acs.joc.9b00741] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lars Longwitz
- Leibniz Institute for Catalysis at the University of Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Stefan Jopp
- Leibniz Institute for Catalysis at the University of Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Thomas Werner
- Leibniz Institute for Catalysis at the University of Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
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4
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Su JY, Grünenfelder DC, Takeuchi K, Reisman SE. Radical Deoxychlorination of Cesium Oxalates for the Synthesis of Alkyl Chlorides. Org Lett 2018; 20:4912-4916. [PMID: 30062894 DOI: 10.1021/acs.orglett.8b02045] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A radical deoxychlorination of cesium oxalates has been developed for the preparation of hindered secondary and tertiary alkyl chlorides. The reaction tolerates a number of functional groups, including ketones, alcohols, and amides, and provides complementary reactivity to standard deoxychlorination reactions proceeding by heterolytic mechanisms. Preliminary studies demonstrate that the developed conditions can also be applied to deoxybromination and deoxyfluorination reactions.
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Affiliation(s)
- Justin Y Su
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering , Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena , California 91125 , United States
| | - Denise C Grünenfelder
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering , Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena , California 91125 , United States
| | - Kohei Takeuchi
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering , Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena , California 91125 , United States
| | - Sarah E Reisman
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering , Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena , California 91125 , United States
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5
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Azad CS, Narula AK. An operational transformation of 3-carboxy-4-quinolones into 3-nitro-4-quinolones via ipso-nitration using polysaccharide supported copper nanoparticles: synthesis of 3-tetrazolyl bioisosteres of 3-carboxy-4-quinolones as antibacterial agents. RSC Adv 2016. [DOI: 10.1039/c5ra26909a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The 3-nitro-4-quinolones have been synthesized via ipso nitration of 3-carboxy-4-quinolones by chitosan supported Cu nano-particles. The 3-nitro derivatives were converted into their 3-tetrazolyl bioisosteres which showed increased antibacterial activity.
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Affiliation(s)
- Chandra S. Azad
- “Hygeia” Centre of Excellence in Pharmaceutical Sciences (CEPS)
- GGS Indraprastha University
- New Delhi
- India
| | - Anudeep K. Narula
- “Hygeia” Centre of Excellence in Pharmaceutical Sciences (CEPS)
- GGS Indraprastha University
- New Delhi
- India
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6
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Azad CS, Khan IA, Narula AK. Organocatalyzed asymmetric Michael addition by an efficient bifunctional carbohydrate–thiourea hybrid with mechanistic DFT analysis. Org Biomol Chem 2016; 14:11454-11461. [DOI: 10.1039/c6ob02158a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of thiourea based bifunctional organocatalysts having d-glucose as a core scaffold were synthesized and examined as catalysts for the asymmetric Michael addition reaction of aryl/alkyl trans-β-nitrostyrenes over cyclohexanone and other Michael donors having active methylene.
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Affiliation(s)
- Chandra S. Azad
- “Hygeia” Centre of Excellence in Pharmaceutical Sciences (CEPS)
- GGS Indraprastha University
- New Delhi
- India
| | - Imran A. Khan
- Department of Chemistry
- Guru Nanak Dev University
- Amritsar
- India
| | - Anudeep K. Narula
- “Hygeia” Centre of Excellence in Pharmaceutical Sciences (CEPS)
- GGS Indraprastha University
- New Delhi
- India
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7
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Abdoli M, Saeidian H. Synthesis and reactivity of imidazole-1-sulfonate esters (imidazylates) in substitution, elimination, and metal-catalyzed cross-coupling reactions: a review. J Sulphur Chem 2015. [DOI: 10.1080/17415993.2015.1057512] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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8
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Azad CS, Balaramnavar VM, Khan IA, Doharey PK, Saxena JK, Saxena AK. Operative conversions of 3-carboxy-4-quinolones into 3-nitro-4-quinolones via ipso-nitration: potential antifilarial agents as inhibitors of Brugia malayi thymidylate kinase. RSC Adv 2015. [DOI: 10.1039/c5ra18036h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
An efficient, cost effective and green methodology for ipso nitration in the synthesis of the 3-nitro derivative of 3-carboxy 4-quinolones has been developed by the quantitative use of copper acetate and silver nitrate in water.
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Affiliation(s)
- Chandra S. Azad
- Division of Medicinal and Process Chemistry CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | | | - Imran A. Khan
- Division of Medicinal and Process Chemistry CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Pawan K. Doharey
- Division of Biochemistry
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Jitendra K. Saxena
- Division of Biochemistry
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Anil K. Saxena
- Division of Medicinal and Process Chemistry CSIR-Central Drug Research Institute
- Lucknow-226031
- India
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9
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Mohamed S, Bernhardt PV, Ferro V. Attempted Synthesis of the Imidazylate of an α-Hydroxylactone Results in Unexpected Chlorination: Synthesis and X-Ray Crystal Structure of 5-Chloro-5-deoxy-1,2-O-isopropylidene-β-l-idurono-6,3-lactone. J Carbohydr Chem 2014. [DOI: 10.1080/07328303.2014.907908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Shifaza Mohamed
- School of Chemistry and Molecular Biosciences, the University of Queensland, Brisbane, Australia
| | - Paul V. Bernhardt
- School of Chemistry and Molecular Biosciences, the University of Queensland, Brisbane, Australia
| | - Vito Ferro
- School of Chemistry and Molecular Biosciences, the University of Queensland, Brisbane, Australia
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10
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Cui XM, Guan YH, Li N, Lv H, Fu LA, Guo K, Fan X. A mild and efficient method for bromination of alcohols using α,α-dibromo-β-dicarbonyl compounds as halogen sources. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.10.120] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Khan IA, Saxena AK. Metal-Free, Mild, Nonepimerizing, Chemo- and Enantio- or Diastereoselective N-Alkylation of Amines by Alcohols via Oxidation/Imine–Iminium Formation/Reductive Amination: A Pragmatic Synthesis of Octahydropyrazinopyridoindoles and Higher Ring Analogues. J Org Chem 2013; 78:11656-69. [DOI: 10.1021/jo4012249] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Imran A. Khan
- Laboratory
No. 101, Medicinal
and Process Chemistry Division (MPC), CSIR-Central Drug Research Institute (CDRI), Chattar
Manzil Palace, Lucknow, Uttar Pradesh 226-001, India
| | - Anil K. Saxena
- Laboratory
No. 101, Medicinal
and Process Chemistry Division (MPC), CSIR-Central Drug Research Institute (CDRI), Chattar
Manzil Palace, Lucknow, Uttar Pradesh 226-001, India
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12
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Babu DC, Rao CB, Venkatesham K, Selvam JJP, Venkateswarlu Y. Toward synthesis of carbasugars (+)-gabosine C, (+)-COTC, (+)-pericosine B, and (+)-pericosine C. Carbohydr Res 2013; 388:130-7. [PMID: 24637047 DOI: 10.1016/j.carres.2013.08.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 08/03/2013] [Accepted: 08/09/2013] [Indexed: 11/28/2022]
Abstract
Asymmetric total synthesis of (+)-gabosine C, (+)-pericosine B, and (+)-pericosine C has been reported from readily available d-(-)-isoascorbic acid and d-ribose involving Grubbs ring closing metathesis, Morita-Baylis-Hillman (MBH) reaction, and Luche reduction.
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Affiliation(s)
- D Chanti Babu
- Division of Natural Product Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 007, India.
| | - Ch Bhujanga Rao
- Division of Natural Product Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - K Venkatesham
- Division of Natural Product Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - J Jon Paul Selvam
- Division of Natural Product Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - Y Venkateswarlu
- Division of Natural Product Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 007, India
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