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Morales-Serna JA, Jaime-Vasconcelos MÁ, García-Ríos E, Cruz A, Angeles-Beltrán D, Lomas-Romero L, Negrón-Silva GE, Cárdenas J. Efficient activity of magnesium–aluminium hydrotalcite in the synthesis of amides. RSC Adv 2013. [DOI: 10.1039/c3ra42335b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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Design and synthesis of a dual linker for solid phase synthesis of oleanolic acid derivatives. Molecules 2011; 16:4748-63. [PMID: 21654580 PMCID: PMC6264254 DOI: 10.3390/molecules16064748] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Revised: 05/27/2011] [Accepted: 05/30/2011] [Indexed: 11/17/2022] Open
Abstract
A hydrophilic amino-terminated poly(ethylene glycol)-type dual linker for solid phase synthesis of oleanolic acid derivatives using trityl chloride resin was designed and synthesized for the first time. Model reactions in both liquid and solid phase were performed to show the feasibility of its selective cleavage at two different sites. The biological assay results indicated that the long and flexible alkyl ether functionality in the linker is less likely to be critical for the binding event. Following the successful solid-phase synthesis of model compounds, the potential of this dual linker in reaction monitoring and target identification is deemed worthy of further study.
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Morales-Serna JA, Sánchez E, Velázquez R, Bernal J, García-Ríos E, Gaviño R, Negrón-Silva G, Cárdenas J. Highly efficient macrolactonization of ω-hydroxy acids using benzotriazole esters: synthesis of Sansalvamide A. Org Biomol Chem 2010; 8:4940-8. [DOI: 10.1039/c0ob00161a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kang F, Sui Z, Murray WV. Phosphonium Coupling in the Direct Bond Formations of Tautomerizable Heterocycles via C–OH Bond Activation. European J Org Chem 2009. [DOI: 10.1002/ejoc.200801004] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fu‐An Kang
- Johnson & Johnson Pharmaceutical Research and Development, LLC 665 Stockton Drive, Exton, PA 19341, USA, Fax: +1‐610‐458‐8249
| | - Zhihua Sui
- Johnson & Johnson Pharmaceutical Research and Development, LLC 665 Stockton Drive, Exton, PA 19341, USA, Fax: +1‐610‐458‐8249
| | - William V. Murray
- Johnson & Johnson Pharmaceutical Research and Development, LLC 665 Stockton Drive, Exton, PA 19341, USA, Fax: +1‐610‐458‐8249
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Bae S, Lakshman MK. A Novel Polymer Supported Approach to Nucleoside Modification. J Org Chem 2008; 73:3707-13. [PMID: 18429630 DOI: 10.1021/jo702558n] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Suyeal Bae
- The City College and The City University of New York, 160 Convent Avenue, New York, New York 10031-9198
| | - Mahesh K. Lakshman
- The City College and The City University of New York, 160 Convent Avenue, New York, New York 10031-9198
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Wan ZK, Wacharasindhu S, Levins CG, Lin M, Tabei K, Mansour TS. The Scope and Mechanism of Phosphonium-Mediated SNAr Reactions in Heterocyclic Amides and Ureas. J Org Chem 2007; 72:10194-210. [DOI: 10.1021/jo7020373] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhao-Kui Wan
- Chemical and Screening Sciences, Wyeth Research, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, and Chemical and Screening Sciences, Wyeth Research, 401 Middletown Road, Pearl River, New York 10965
| | - Sumrit Wacharasindhu
- Chemical and Screening Sciences, Wyeth Research, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, and Chemical and Screening Sciences, Wyeth Research, 401 Middletown Road, Pearl River, New York 10965
| | - Christopher G. Levins
- Chemical and Screening Sciences, Wyeth Research, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, and Chemical and Screening Sciences, Wyeth Research, 401 Middletown Road, Pearl River, New York 10965
| | - Melissa Lin
- Chemical and Screening Sciences, Wyeth Research, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, and Chemical and Screening Sciences, Wyeth Research, 401 Middletown Road, Pearl River, New York 10965
| | - Keiko Tabei
- Chemical and Screening Sciences, Wyeth Research, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, and Chemical and Screening Sciences, Wyeth Research, 401 Middletown Road, Pearl River, New York 10965
| | - Tarek S. Mansour
- Chemical and Screening Sciences, Wyeth Research, 200 Cambridge Park Drive, Cambridge, Massachusetts 02140, and Chemical and Screening Sciences, Wyeth Research, 401 Middletown Road, Pearl River, New York 10965
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Bae S, Lakshman MK. O6-(benzotriazol-1-yl)inosine derivatives: easily synthesized, reactive nucleosides. J Am Chem Soc 2007; 129:782-9. [PMID: 17243813 DOI: 10.1021/ja064682n] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel class of O6-(benzotriazol-1-yl)inosine as well as the corresponding 2'-deoxy derivatives can be conveniently prepared by a reaction between sugar-protected or -unprotected inosine or 2'-deoxyinosine nucleosides and 1H-benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphate (BOP). The reaction appears to proceed via a nucleoside phosphonium salt, and in the absence of any additional nucleophile, the released 1-hydroxybenzotriazole undergoes reaction with the formed phosphonium salt leading to the requisite O6-(benzotriazol-1-yl)inosine or 2'-deoxyinosine derivatives. Isolation and characterization of the phosphonium salt as well as analysis by 31P{1H} NMR appear to be consistent with this reaction pathway. The resulting O6-(benzotriazol-1-yl)inosine derivatives are effective as electrophilic nucleosides, undergoing facile reactions with a variety of nucleophiles such as alcohols, phenols, amines, and a thiol. Unusual and challenging nucleoside derivatives such as an aryl-bridged dimer, a nucleoside-amino acid conjugate, and a nucleoside-nucleoside dimer have also been synthesized from the O6-(benzotriazol-1-yl)-2'-deoxyinosine derivative. Finally, a fully protected DNA building block, the O6-(benzotriazol-1-yl)-2'-deoxyinosine 5'-O-DMT 3'-O-phosphoramidite, has been prepared and a preliminary evaluation of its use for DNA modification has been performed. Results from these studies indicate several important facts: A single, simple methodological approach provides a class of stable, isolable ribo and 2'-deoxyribonucleoside derivatives that possess excellent reactivity for SNAr chemistry with a wide range of nucleophiles. Also, a benzotriazolyl nucleoside phosphoramidite appears to be a suitable reagent for incorporation into DNA for purposes of site-specific DNA modification.
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Affiliation(s)
- Suyeal Bae
- Department of Chemistry, The City College and The City University of New York, 138th Street at Convent Avenue, New York, New York 10031-9198, USA
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Abstract
High throughput (HT) techniques are now extensively used for the synthesis of libraries of several thousands of compounds. More recently, HT methods began to be applied to other areas, such as physical organic chemistry. This has allowed for instance the development of tools for HT reaction assessment, HT kinetic and thermodynamic measurements, and physicochemical property profiling, using a broad set of analytical tools, ranging from mass spectrometry to image analysis based techniques. This article provides an overview of recent HT physical organic chemistry techniques. Special attention is given to the application of quantitative analytical constructs for HT monomer reactivity profiling and HT evaluation of Hammett parameters.
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Affiliation(s)
- Christophe Portal
- Combinatorial Centre of Excellence, School of Chemistry, West Mains Road, University of Edinburgh, Edinburgh, UKEH9 3JJ
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Portal CF, Bradley M. High-Throughput Physical Organic Chemistry Hammett Parameter Evaluation. Anal Chem 2006; 78:4931-7. [PMID: 16841913 DOI: 10.1021/ac060596u] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
High-throughput analysis techniques were developed to allow the rapid assessment of a range of Hammett parameters utilizing positive electrospray mass spectrometry (ESI+ -MS) as the sole quantitative tool, with the core of the approach being a so-called "analytical construct". Hammett substituent parameters were determined for a range of meta- and para-substituted anilines by high-throughput (HT) assessment of relative reaction rates for competitive amide bond formation reaction with up to five parameters determined in a single pot reaction. Sensitivity of the reaction to substituents' effects (materialized by Hammett's rho parameter) was determined in the first instance, with HT Hammett's sigma substituent parameter assessment then carried out successfully for over 30 anilines, with excellent correlation observed between the HT ESI+ -MS method of determination and literature values.
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Affiliation(s)
- Christophe F Portal
- Combinatorial Centre of Excellence, School of Chemistry, The University of Edinburgh, Edinburgh EH9 3JJ, UK
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Rodenko B, Detz RJ, Pinas VA, Lambertucci C, Brun R, Wanner MJ, Koomen GJ. Solid phase synthesis and antiprotozoal evaluation of di- and trisubstituted 5′-carboxamidoadenosine analogues. Bioorg Med Chem 2006; 14:1618-29. [PMID: 16249090 DOI: 10.1016/j.bmc.2005.10.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2005] [Revised: 10/04/2005] [Accepted: 10/06/2005] [Indexed: 11/25/2022]
Abstract
The rapid increase of resistance to drugs commonly used in the treatment of tropical diseases such as malaria and African sleeping sickness calls for the prompt development of new safe and efficacious drugs. The pathogenic protozoan parasites lack the capability of synthesising purines de novo and they take up preformed purines from their host through various transmembrane transporters. Adenosine derivatives constitute a class of potential therapeutics due to their selective internalisation by these transporters. Automated solid-phase synthesis can speed up the process of lead finding and we pursued the solid-phase synthesis of di- and trisubstituted 5'-carboxamidoadenosine derivatives by using a safety-catch approach. While efforts with Kenner's sulfonamide linker remained fruitless, successful application of the hydrazide safety-catch linker allowed the construction of two representative combinatorial libraries. Their antiprotozoal evaluation identified two compounds with promising activity: N(6)-benzyl-5'-N-phenylcarboxamidoadenosine with an IC(50) value of 0.91 microM against Trypanosoma brucei rhodesiense and N(6)-diphenylethyl-5'-phenylcarboxamidoadenosine with an IC(50) value of 1.8 microM against chloroquine resistant Plasmodium falciparum.
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Affiliation(s)
- Boris Rodenko
- Van't Hoff Institute for Molecular Sciences, Universiteit van Amsterdam, The Netherlands
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Dual linker with a reference cleavage site for information rich analysis of polymer-supported transformations. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.05.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Scicinski JJ, Congreve MS, Ley SV. Development of an Indole Safety-Catch Linker Using Analytical Constructs. ACTA ACUST UNITED AC 2004; 6:375-84. [PMID: 15132597 DOI: 10.1021/cc0499791] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development, evaluation, and application of a novel safety-catch linker for solid-phase synthesis based on an N-tosylindole is reported. The development of this linker using analytical constructs to aid analysis is discussed.
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Affiliation(s)
- Jan J Scicinski
- GlaxoSmithKline Cambridge Chemistry Laboratory and Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.
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Jamieson C, Congreve MS, Emiabata-Smith DF, Ley SV, Scicinski JJ. Application of ReactArray Robotics and Design of Experiments Techniques in Optimisation of Supported Reagent Chemistry. Org Process Res Dev 2002. [DOI: 10.1021/op010108e] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Craig Jamieson
- GlaxoSmithKline R&D, Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY Hertfordshire, UK, and GlaxoSmithKline Cambridge Technology Centre and University Chemical Laboratory, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Miles S. Congreve
- GlaxoSmithKline R&D, Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY Hertfordshire, UK, and GlaxoSmithKline Cambridge Technology Centre and University Chemical Laboratory, Lensfield Road, Cambridge, CB2 1EW, UK
| | - David F. Emiabata-Smith
- GlaxoSmithKline R&D, Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY Hertfordshire, UK, and GlaxoSmithKline Cambridge Technology Centre and University Chemical Laboratory, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Steven V. Ley
- GlaxoSmithKline R&D, Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY Hertfordshire, UK, and GlaxoSmithKline Cambridge Technology Centre and University Chemical Laboratory, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Jan J. Scicinski
- GlaxoSmithKline R&D, Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY Hertfordshire, UK, and GlaxoSmithKline Cambridge Technology Centre and University Chemical Laboratory, Lensfield Road, Cambridge, CB2 1EW, UK
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