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Andreini M, Anderluh M, Audfray A, Bernardi A, Imberty A. Monovalent and bivalent N-fucosyl amides as high affinity ligands for Pseudomonas aeruginosa PA-IIL lectin. Carbohydr Res 2010; 345:1400-7. [DOI: 10.1016/j.carres.2010.03.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Revised: 03/11/2010] [Accepted: 03/14/2010] [Indexed: 11/30/2022]
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2
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Sathe M, Derveni M, Allen M, Cullen DC. Use of polystyrene-supported 2-isobutoxy-1-isobutoxycarbonyl-1,2-dihydroquinoline for the preparation of a hapten–protein conjugate for antibody development. Bioorg Med Chem Lett 2010; 20:1792-5. [DOI: 10.1016/j.bmcl.2009.12.078] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2009] [Revised: 12/17/2009] [Accepted: 12/18/2009] [Indexed: 11/29/2022]
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3
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Duarte A, Cunico W, Pereira CMP, Flores AFC, Freitag RA, Siqueira GM. Ultrasound promoted synthesis of thioesters from 2-mercaptobenzoxa(thia)zoles. ULTRASONICS SONOCHEMISTRY 2010; 17:281-3. [PMID: 19740694 DOI: 10.1016/j.ultsonch.2009.08.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2009] [Revised: 08/04/2009] [Accepted: 08/12/2009] [Indexed: 05/14/2023]
Abstract
An ultrasound-enhanced method has been developed for the synthesis of a variety of thioesters from benzoyl chlorides and 2-mercaptobenzoxa(thia)zoles. Applying this methodology, 14 compounds were synthesized in excellent yields.
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Affiliation(s)
- Anaí Duarte
- Departamento de Química Orgânica, UFPel, Campus Universitário, Pelotas, RS, Brazil
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Mathew P, Nair SK, Sreedhar KM, Pillai VNR, Asokan CV. Bromine Complexes of Polyvinylpyrrolidone Supports: A Mild Reagent for the Transformation of α‐Oxoketene Dithioacetals to β‐Oxothiolesters. SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397910500182069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Paulson Mathew
- a School of Chemical Sciences , Mahatma Gandhi University , Kottayam, India
| | - Satheesh K. Nair
- a School of Chemical Sciences , Mahatma Gandhi University , Kottayam, India
| | - K. M. Sreedhar
- a School of Chemical Sciences , Mahatma Gandhi University , Kottayam, India
| | | | - C. V. Asokan
- a School of Chemical Sciences , Mahatma Gandhi University , Kottayam, India
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5
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Katritzky AR, Singh SK, Cai C, Bobrov S. Direct Synthesis of Esters and Amides from Unprotected Hydroxyaromatic and -aliphatic Carboxylic Acids. J Org Chem 2006; 71:3364-74. [PMID: 16626115 DOI: 10.1021/jo052293q] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A facile method for the activation of hydroxy-substituted carboxylic acids using benzotriazole chemistry without prior protection of the hydroxy substituents is presented. The N-acylbenzotriazole intermediates 2a-g, 6a-d, and 9a-c have been used for high-yielding synthesis of both aliphatic (3a-l) and aromatic (7a-h, 10a-f) hydroxy carboxamides. High yields of aromatic hydroxy esters 12a-h and 13a-i were obtained using either neat alcohols in neutral microwave conditions or nucleophilic alkoxides and the intermediate N-(arylacyl)benzotriazoles. Moderate yields were obtained in the case of aliphatic hydroxy esters 11a,b and thiolesters 11e-g from the intermediates 2a-c.
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Affiliation(s)
- Alan R Katritzky
- Center for Heterocyclic Compounds, University of Florida, Department of Chemistry, Gainesville, Florida 32611-7200, USA.
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6
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Nambu H, Hata K, Matsugi M, Kita Y. Efficient Synthesis of Thioesters and Amides from Aldehydes by Using an Intermolecular Radical Reaction in Water. Chemistry 2005; 11:719-27. [PMID: 15580646 DOI: 10.1002/chem.200400754] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The combination of the water-soluble radical initiator, 2,2'-azobis[2-(2-imidazolin-2-yl)propane] dihydrochloride (VA-044) and the surfactant, cetyltrimethyl-ammonium bromide (CTAB), was found to be the most suitable condition for the effective and direct synthesis of useful active thioesters (pentafluorophenyl thioesters) in water. In addition, the direct amidation of aldehydes was achieved by the addition of the amines to the thioesterification reaction mixture in water.
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Affiliation(s)
- Hisanori Nambu
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
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Braga AL, Martins TL, Silveira CC, Rodrigues OE. Synthesis of chalcogenol esters from chalcogenoacetylenes. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00200-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Kirschning A, Monenschein H, Wittenberg R. Funktionalisierte Polymere - zukunftsträchtige Werkzeuge für die Chemie in Lösung und die automatisierte Parallelsynthese. Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3757(20010216)113:4<670::aid-ange6700>3.0.co;2-g] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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9
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Kirschning A, Monenschein H, Wittenberg R. Functionalized Polymers-Emerging Versatile Tools for Solution-Phase Chemistry and Automated Parallel Synthesis. Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3773(20010216)40:4<650::aid-anie6500>3.0.co;2-c] [Citation(s) in RCA: 318] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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10
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Kirschning A, Monenschein H, Wittenberg R. The "resin-capture-release" hybrid technique: a merger between solid- and solution-phase synthesis. Chemistry 2000; 6:4445-50. [PMID: 11192076 DOI: 10.1002/1521-3765(20001215)6:24<4445::aid-chem4445>3.0.co;2-w] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A polymer-assisted organic synthesis that combines the concept of solid-phase synthesis with the idea of polymer-supported scavenging reagents has recently appeared on the chemistry scene. This technique has frequently been termed the "resin-capture-release" methodology and is initiated by the immobilization of a small molecule on a polymeric support. This intermediate is subjected to a second transformation by adding a new reaction partner in solution. This reactant plays two roles: a) the chemical alteration of the polymer-bound intermediate and b) the simultaneous release of this reaction product from the resin back into solution. This new concept is presented and future prospects are discussed.
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Affiliation(s)
- A Kirschning
- Institut für Organische Chemie, Universität Hannover, Germany.
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11
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Affiliation(s)
- T Kondo
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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12
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Floyd CD, Leblanc C, Whittaker M. Combinatorial chemistry as a tool for drug discovery. PROGRESS IN MEDICINAL CHEMISTRY 2000; 36:91-168. [PMID: 10818672 DOI: 10.1016/s0079-6468(08)70046-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The question 'will combinatorial chemistry deliver real medicines' has been posed [96]. First it is important to realise that the chemical part of the drug discovery process cannot stand alone; the integration of synthesis and biological assays is fundamental to the combinatorial approach. The results presented in Tables 3.1 to 3.8 suggest that so far smaller directed combinatorial libraries have obtained equivalent results to those obtained previously from traditional medicinal chemistry analogue programs. Unfortunately, because of the long time it takes to develop pharmaceutical drugs there are no examples yet of marketed drugs discovered by combinatorial methods. There are interesting examples where active leads have been discovered from the screening of the same library against multiple targets (e.g. libraries 13, 39, 43, 66, 71 and 76). It is now possible to handle much larger libraries of non-oligomeric structures and the chemistry required for such applications is becoming available. Whether combinatorial approaches can also be adapted to deal with all the other requirements of a successful pharmaceutical (lack of toxicity, bioavailability etc.) is open to question but there are already examples such as cassette dosing [235-237]. However we can still be optimistic about the possibility of larger libraries producing avenues of investigation for the medicinal chemist to develop into real drugs. Combinatorial chemistry is an important tool for the medicinal chemist.
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Affiliation(s)
- C D Floyd
- British Biotech Pharmaceuticals Limited, Oxford, U.K
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Xiao WJ, Alper H. Highly Regioselective Thiocarbonylation of Allylic Alcohols with Thiols and Carbon Monoxide Catalyzed by Palladium Complexes: A New and Efficient Route to β,γ-Unsaturated Thioesters. J Org Chem 1998. [DOI: 10.1021/jo9812328] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wen-Jing Xiao
- Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada K1N 6N5
| | - Howard Alper
- Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, Ontario, Canada K1N 6N5
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Braga AL, Rodrigues OE, de Avila E, Silveira CC. Synthesis of thiolesters from thioacetylenes. Tetrahedron Lett 1998. [DOI: 10.1016/s0040-4039(98)00531-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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17
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Berenguer R, Cavero M, Garcia J, Muñoz M. Enantioselective synthesis of α-hydroxy thioesters via oxazaborolidine-mediated reduction of α-phenylthio enones. Tetrahedron Lett 1998. [DOI: 10.1016/s0040-4039(98)00170-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Xiao WJ, Alper H. The First Examples of the Palladium-Catalyzed Thiocarbonylation of Propargylic Alcohols with Thiols and Carbon Monoxide. J Org Chem 1997. [DOI: 10.1021/jo970126n] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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