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Katsuta R, Ishiuchi R, Kunisawa M, Yajima A, Ishigami K, Nukada T. Synthesis of both enantiomers of lycoperdic acid, an unusual mushroom-derived amino acid. Biosci Biotechnol Biochem 2021; 85:154-159. [PMID: 33577651 DOI: 10.1093/bbb/zbaa027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 08/27/2020] [Indexed: 11/13/2022]
Abstract
An efficient synthesis of both enantiomers of lycoperdic acid, a 4-hydroxyglutamic acid derivative from edible mushroom Lycoperdon perlatum, was achieved from a chiral aminoalcohol. The key steps were a stereoselective introduction of a C3 unit into a bicyclic ketone and oxidative cleavage of a cyclic vicinal diol into a dicarboxylic acid. This report provides the first synthesis of (-)-lycoperdic acid.
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Affiliation(s)
- Ryo Katsuta
- Department of Chemistry for Life Sciences and Agriculture, Tokyo University of Agriculture, Setagaya-ku, Tokyo, Japan
| | - Ryutaro Ishiuchi
- Graduate School of Agriculture, Tokyo University of Agriculture, Setagaya-ku, Tokyo, Japan
| | - Mikiko Kunisawa
- Department of Fermentation Science, Tokyo University of Agriculture, Setagaya-ku, Tokyo, Japan
| | - Arata Yajima
- Department of Chemistry for Life Sciences and Agriculture, Tokyo University of Agriculture, Setagaya-ku, Tokyo, Japan
| | - Ken Ishigami
- Department of Chemistry for Life Sciences and Agriculture, Tokyo University of Agriculture, Setagaya-ku, Tokyo, Japan
| | - Tomoo Nukada
- Department of Chemistry for Life Sciences and Agriculture, Tokyo University of Agriculture, Setagaya-ku, Tokyo, Japan
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2
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Szabó B, Tamás B, Faigl F, Éles J, Greiner I. Diastereoselective synthesis of cis-N-Boc-4-aminocyclohexanol with reductive ring opening method using continuous flow. J Flow Chem 2019. [DOI: 10.1007/s41981-018-00028-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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3
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Gordillo Guerra P, Clerici P, Micouin L. Modular Access to N-Substituted cis 5-Amino-3-hydroxypiperidines. J Org Chem 2017; 82:7689-7694. [PMID: 28665596 DOI: 10.1021/acs.joc.7b01485] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A sequence of oxidative cleavage/reductive amination/reductive cleavage enables the preparation of N-substituted cis 5-amino-3-hydroxypiperidines from a readily available bicyclic adduct. This new route provides straightforward and versatile access to drug-relevant scaffolds or fragments.
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Affiliation(s)
- Paola Gordillo Guerra
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Faculté des Sciences Fondamentales et Bio-médicales, UMR 8601, CNRS-Paris Descartes University , 45 rue des Saints Pères, 75006 Paris, France
| | - Paolo Clerici
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Faculté des Sciences Fondamentales et Bio-médicales, UMR 8601, CNRS-Paris Descartes University , 45 rue des Saints Pères, 75006 Paris, France
| | - Laurent Micouin
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologiques, Faculté des Sciences Fondamentales et Bio-médicales, UMR 8601, CNRS-Paris Descartes University , 45 rue des Saints Pères, 75006 Paris, France
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4
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5
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6
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Durham R, Mandel J, Blanchard N, Tam W. Ruthenium-catalyzed [2+2] cycloaddition reactions of a 2-oxa-3-azabicyclo[2.2.1]hept-5-ene with unsymmetrical alkynes. CAN J CHEM 2011. [DOI: 10.1139/v11-135] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Ruthenium-catalyzed [2+2] cycloaddition reactions of a 2-oxa-3-azabicyclo[2.2.1]hept-5-ene with unsymmetrical alkynes were investigated. Yields of up to 90% were obtained though regioselectivity was modest. Select cycloadducts could be separated and used to access a highly functionalized [3.2.0] bicyclic structure through reductive cleavage of the N–O bond. These ring-opened products displayed a chemical exchange phenomenon in 1D carbon NMR and required characterization by 2D NMR techniques.
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Affiliation(s)
- Robin Durham
- Guelph–Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Jérémie Mandel
- Université de Haute-Alsace, École Nationale Supérieure de Chimie de Mulhouse, Laboratoire de Chimie Organique et Bioorganique EA4566, 3 rue A. Werner, 68093 Mulhouse CEDEX, France
| | - Nicolas Blanchard
- Université de Haute-Alsace, École Nationale Supérieure de Chimie de Mulhouse, Laboratoire de Chimie Organique et Bioorganique EA4566, 3 rue A. Werner, 68093 Mulhouse CEDEX, France
| | - William Tam
- Guelph–Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, ON N1G 2W1, Canada
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7
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Bodnar BS, Miller MJ. The nitrosocarbonyl hetero-Diels-Alder reaction as a useful tool for organic syntheses. Angew Chem Int Ed Engl 2011; 50:5630-47. [PMID: 21520360 DOI: 10.1002/anie.201005764] [Citation(s) in RCA: 206] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Indexed: 11/11/2022]
Abstract
Organic transformations that result in the formation of multiple covalent bonds within the same reaction are some of the most powerful tools in synthetic organic chemistry. Nitrosocarbonyl hetero-Diels-Alder (HDA) reactions allow for the simultaneous stereospecific introduction of carbon-nitrogen and carbon-oxygen bonds in one synthetic step, and provide direct access to 3,6-dihydro-1,2-oxazines. This Review describes the development of the nitrosocarbonyl HDA reaction and the utility of the resulting oxazine ring in the synthesis of a variety of important, biologically active molecules.
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Affiliation(s)
- Brian S Bodnar
- Chemspeed Technologies, Inc. 113 North Center Drive, North Brunswick, NJ 08906, USA
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8
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Bodnar BS, Miller MJ. Hetero-Diels-Alder-Reaktionen von Nitrosocarbonylverbindungen als nützliches Verfahren in der organischen Synthese. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201005764] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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Quadrelli P, Romano S, Caramella P. Nonbonded Interactions Tune Selectivities in Cycloadditions to 2,3-Dioxabicyclo[2.2.2]oct-5-ene. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000732] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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10
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Yang B, Miller MJ. Regio- and stereochemically controlled formation of hydroxamic acids from indium triflate-mediated nucleophilic ring-opening reactions with acylnitroso-Diels-Alder adducts. Tetrahedron Lett 2010; 51:889-891. [PMID: 20209116 PMCID: PMC2830661 DOI: 10.1016/j.tetlet.2009.12.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of acylnitroso-Diels-Alder [2.2.1] bicyclic adducts 2a-b with indium triflate in an alcohol solvent induces ring opening reactions to afford monocyclic anti-1,2-, anti-1,4- and syn-1,4-hydroxamic acids with good to excellent regio- and stereoselectivity (up to 7:86:7). Treatment of [2.2.2] bicyclic nitroso adducts 2c-d under similar reaction conditions generates only anti-1,2- and anti-1,4-hydroxamic acids with anti-1,4-product predominant (up to 17:83).
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Affiliation(s)
- Baiyuan Yang
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, United States
| | - Marvin J. Miller
- Department of Chemistry and Biochemistry, 251 Nieuwland Science Hall, University of Notre Dame, Notre Dame, IN 46556, United States
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11
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Yang B, Miller MJ. Regio- and stereoselective indium triflate-mediated nucleophilic ring-opening reactions of 3-aza-2-oxabicyclo[2.2.1]hept-5-ene and -[2.2.2]oct-5-ene systems. J Org Chem 2009; 74:7990-3. [PMID: 19754105 DOI: 10.1021/jo9016343] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Indium triflate-mediated nucleophilic ring-opening reactions of 3-aza-2-oxabicyclo[2.2.1]hept-5-ene and -[2.2.2]oct-5-ene systems with alcohols and water were investigated. Reactions of [2.2.1] bicyclic systems gave anti-1,2-, anti-1,4- and syn-1,4-ring-opened products with moderate to excellent regio- and stereoselectivity. When [2.2.2] bicyclic systems were subjected to similar reaction conditions, only anti-1,2 and anti-1,4-ring-opened products were obtained.
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Affiliation(s)
- Baiyuan Yang
- Department of Chemistry and Biochemistry, University of Notre Dame, 251 Nieuwland Hall, Notre Dame, Indiana 46556, USA
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12
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Machin BP, Ballantine M, Mandel J, Blanchard N, Tam W. Rhodium-catalyzed ring-opening reactions of a 3-aza-2-oxabicyclo[2.2.1]hept-5-ene with arylboronic acids. J Org Chem 2009; 74:7261-6. [PMID: 19731959 DOI: 10.1021/jo901248w] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rhodium-catalyzed ring-opening reactions of a 3-aza-2-oxabicyclo[2.2.1]hept-5-ene with arylboronic acids were investigated. The use of [RhCl(COD)](2), (+/-)-BINAP, and NaHCO(3) in MeOH at 60 degrees C was found to be the optimized conditions for the ring-opening reactions to give the 1,2-ring-opened products. Various arylboronic acids were examined, and low to moderate yields were obtained and stereoselectivities (trans/cis) from 50:50 to 100:0 were observed.
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Affiliation(s)
- Ben P Machin
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1
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13
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Machin BP, Howell J, Mandel J, Blanchard N, Tam W. Ruthenium-Catalyzed Nucleophilic Ring-Opening Reactions of a 3-Aza-2-oxabicyclo[2.2.1]hept-5-ene with Alcohols. Org Lett 2009; 11:2077-80. [DOI: 10.1021/ol900454q] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ben P. Machin
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
| | - Jennifer Howell
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
| | - Jérémie Mandel
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
| | - Nicolas Blanchard
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
| | - William Tam
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada N1G 2W1, and Laboratoire de Chimie Organique et Bioorganique, ENSCMu, CNRS FRE 3253, Université de Haute-Alsace, 3 rue A. Werner, 68093 Mulhouse, Cedex, France
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14
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Rajappan VP, Hegde VR, Schneller SW. A PROTECTED FORM OF (1S,2R,3S,4R)-4-AMINOCYCLOPENTANE-1,2,3-TRIOL, A USEFUL PRECURSOR TO 5′-NOR CARBOCYCLIC NUCLEOSIDES. SYNTHETIC COMMUN 2006. [DOI: 10.1081/scc-100105336] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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15
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Yang M, Schneller SW. Amino substituted derivatives of 5′-amino-5′-deoxy-5′-noraristeromycin. Bioorg Med Chem 2005; 13:877-82. [PMID: 15653353 DOI: 10.1016/j.bmc.2004.10.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2004] [Revised: 10/11/2004] [Accepted: 10/13/2004] [Indexed: 11/24/2022]
Abstract
The potent antiviral potential of 5'-amino-5'-deoxy-5'-noraristeromycin (2) is limited by associated toxicity. To seek derivatives of 2 that circumvent this undesirable property, three amino substituted derivatives (acetyl, 3; formyl, 4; and methyl, 5) of 2 have been prepared in 4-7 steps from the same intermediate, (1S,4R)-4-(6-chloropurin-9-yl)cyclopent-2-en-1-ol (6). Key steps involved an improved Pd(0)-catalyzed allylic azidation and a novel Pd(0)-catalyzed allylic amidation. The three target compounds were evaluated against a large number of viruses and found to be inactive except for a very weak effect of 5 on human cytomegalovirus, varicella zoster virus, and Epstein-Barr virus. There was also no noteworthy cytotoxicity associated with the new derivatives. Thus, these results indicate variation of the cyclopentyl amine of 2 does not offer a means to improve upon its antiviral potential.
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Affiliation(s)
- Minmin Yang
- Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36849, USA
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16
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Oxenford SJ, O’Brien P, Shipton MR. Chiral base route to functionalised cyclopentenyl amines: formal synthesis of the cyclopentene core of nucleoside Q. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.10.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Trost BM, Ameriks MK. Pd-catalyzed carbonylative lactamization: a novel synthetic approach to FR900482. Org Lett 2004; 6:1745-8. [PMID: 15151404 DOI: 10.1021/ol049583y] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
An asymmetric synthesis of the benzazocine core of FR900482 has been achieved in 15 steps from 3,5-dinitro-p-toluic acid. Key features of the synthesis include an enantioselective N-methylephedrine-mediated zinc acetylide addition to a highly enolizable arylacetaldehyde and a novel Pd-catalyzed carbonylative lactamization to form an eight-membered ring. [reaction--see text]
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, CA 94305-5080, USA.
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18
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Singha K, Roy A, Dutta PK, Tripathi S, Sahabuddin S, Achari B, Mandal SB. Intramolecular Nitrone Cycloaddition Reaction on Carbohydrate-Based Precursors: Application in the Synthesis of Spironucleosides and Spirobisnucleosides. J Org Chem 2004; 69:6507-10. [PMID: 15357621 DOI: 10.1021/jo035813v] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A simple synthesis of chiral spironucleosides and spirobisnucleosides is described. Intramolecular 1,3-dipolar nitrone cycloaddition reaction of d-glucose-derived precursors having olefin at C-3 and nitrone at C-5, C-1, or C-2 (in nor-series) furnished bisisoxazolidinospirocycles 4-7, 11, and 12 in good yields. Reductive ring opening of the isoxazolidine moieties in 4-6 followed by construction of a nucleoside base upon the generated amino groups smoothly yielded spirobisnucleosides 17 and 18 and spironucleosides 20 and 21.
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Affiliation(s)
- Kaushik Singha
- Division of Medicinal Chemistry, Indian Institute of Chemical Biology, Jadavpur, Kolkata 700 032, India
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19
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Gomtsyan A, Didomenico S, Lee CH, Stewart AO, Bhagwat SS, Kowaluk EA, Jarvis MF. Synthesis and biological evaluation of pteridine and pyrazolopyrimidine based adenosine kinase inhibitors. Bioorg Med Chem Lett 2004; 14:4165-8. [PMID: 15261263 DOI: 10.1016/j.bmcl.2004.06.029] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2004] [Accepted: 06/09/2004] [Indexed: 11/26/2022]
Abstract
Three new approaches have been tested to modify existing pyridopyrimidine and alkynylpyrimidine classes of nonnucleoside adenosine kinase inhibitors 2 and 3. 4-Amino-substituted pteridines 8a-e were generally less active than corresponding 5- and 6-substituted pyridopyrimidines 2. Pyrazolopyrimidine 13c with IC(50)=7.5 nM was superior to its open chain alkynylpyrimidine analog 13g (IC(50)=22 nM) while pyrrolopyrimidines such as 17a were inactive.
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Affiliation(s)
- Arthur Gomtsyan
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, IL 60064, USA.
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20
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Li F, Brogan JB, Gage JL, Zhang D, Miller MJ. Chemoenzymatic Synthesis and Synthetic Application of Enantiopure Aminocyclopentenols: Total Synthesis of Carbocyclic (+)-Uracil Polyoxin C and Its α-Epimer. J Org Chem 2004; 69:4538-40. [PMID: 15202916 DOI: 10.1021/jo0496796] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Carbocyclic uracil polyoxin C (+)-2 and its alpha-epimer (-)-3 were synthesized in an efficient fashion from cis-4-(N-tert-butylcarbamoyl)cyclopent-2-en-1-ol (+/-)-7. The synthesis incorporates a concise, inexpensive chemoenzymatic synthesis of enantiopure aminocyclopentenols, a Pd(0)-catalyzed substitution reaction, and a mild reduction of an alpha-nitro ester by TiCl(3)/sodium borohydride. Significantly, this process demonstrates the synthetic utility of the versatile enantiopure aminocyclopentenol building block (-)-4.
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Affiliation(s)
- Fangzheng Li
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA
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21
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Luna AP, Cesario M, Bonin M, Micouin L. Stereoselective Ring Opening of meso Bicyclic Hydrazines: A Straightforward Approach to Hydrazino Cyclopentenic Cores. Org Lett 2003; 5:4771-4. [PMID: 14653670 DOI: 10.1021/ol0357393] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The diastereoselective synthesis of hydrazinocyclopentenes 6 or 7 can be achieved in a straightforward manner from Diels-Alder adduct 4 using an acid-catalyzed rearrangement or a palladium-catalyzed allylic substitution reaction. In the latter case, enantioenriched compounds with ee values up to 58% can be obtained when an appropriate chiral ligand is used. [reaction: see text]
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Affiliation(s)
- Alejandro Pérez Luna
- Laboratoire de Chimie Thérapeutique, UMR 8638 Associée au CNRS et à l'Université René Descartes, Faculté des Sciences Pharmaceutiques et Biologiques, 4 av de l'Observatoire, 75270 Paris Cedex 06, France
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22
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Abstract
An efficient, three-step synthesis of 5'-amino-5'-deoxyaristeromycin (5), from a protected form of aristeromycin (6), is described. Compound 5 was evaluated against a large number of viruses. It showed weak activity towards vaccinia, herpes simplex virus 2, and cytomegalovirus. No other activity was observed. Compound 5 displayed some cytotoxicity towards the host cell lines human foreskin fibroblast, Daudi, and human T-lymphocyte (CEM).
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23
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Reddy VK, Rao LN, Maeda M, Haritha B, Yamashita M. Chemo- and regioselective allylic oxidation: Oxo-derivatives of 2-phospholene sugar analogs. HETEROATOM CHEMISTRY 2003. [DOI: 10.1002/hc.10154] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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24
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Affiliation(s)
- Luigi A Agrofoglio
- Institut de Chimie Organique et Analytique, UMR CNRS 6005, Université d'Orléans, BP 6759-Rue de Chartres, 45067 Orléans, France
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25
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Lee W, Kim KH, Surman MD, Miller MJ. Stereo- and regioselectivity of Pd(0)/InI-mediated allylic additions to aldehydes and ketones. In situ generation of allylindium(III) intermediates from N-acylnitroso Diels-Alder cycloadducts and 1-amino-4-acetoxycyclopentenes. J Org Chem 2003; 68:139-49. [PMID: 12515472 DOI: 10.1021/jo026488z] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Acylnitroso Diels-Alder cycloadduct (11, 37, and 45)- and cyclopentenyl acetate (8 and 9)-derived allylindium(III) species were generated in situ from palladium(0) catalysts and indium(I) iodide, and the stereo- and regiochemistry of their additions to aldehydes and ketones were investigated. Solvent, catalyst, and ionic effects were examined for the reaction of N-acetyl cycloadduct (11) and benzyloxyacetaldehyde (10). The solvent mixture of THF/H(2)O with Pd(OAc)(2).PPh(3) catalysis was found to be optimal. The addition of N-acetyl cycloadduct to aliphatic aldehydes afforded products in good yields and high regio- and stereoselectivity, with the cis-1,4-isomers constituting 90-95% of the products. The reactions with N-Boc (37a) and N-methylcarbamate (37b) cycloadducts also gave the cis-1,4-products predominantly. The same regio- and stereoselectivity applied to the reactions of 4-acetoxy-1-(N-hydroxyphenyacetamido)cyclopentene (8). 4-Acetoxy-1-phenylacetamidocyclopentene (9), however, afforded trans-1,4-products exclusively. Mechanistic speculations involving chelated transition states are described.
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Affiliation(s)
- Wenlin Lee
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556-5670, USA
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26
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Surman MD, Mulvihill MJ, Miller MJ. Regio- and stereoselective ring openings of 3-Aza-2-oxabicyclo[2.2.1]hept-5-ene systems with copper catalyst-modified grignard reagents: application to the synthesis of an inhibitor of 5-lipoxygenase. J Org Chem 2002; 67:4115-21. [PMID: 12054945 DOI: 10.1021/jo016275u] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Treatment of acylnitroso hetero Diels-Alder cycloadducts 2 with organomagnesium reagents in the presence of a catalytic amount of copper induces ring opening to afford predominantly monocyclic anti-1,2-hydroxamic acids 12. Alkylmagnesium reagents were found to give superior regio- and stereoselectivities compared with vinyl and arylmagnesium reagents. This cycloadduct ring opening methodology was applied to the synthesis of a unique cyclopentenyl hydroxamic acid-based inhibitor of 5-lipoxygenase.
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Affiliation(s)
- Matthew D Surman
- Department of Chemistry and Biochemistry, University of Notre Dame, Indiana 46556, USA
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27
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Jarvis MF, Yu H, McGaraughty S, Wismer CT, Mikusa J, Zhu C, Chu K, Kohlhaas K, Cowart M, Lee CH, Stewart AO, Cox BF, Polakowski J, Kowaluk EA. Analgesic and anti-inflammatory effects of A-286501, a novel orally active adenosine kinase inhibitor. Pain 2002; 96:107-18. [PMID: 11932067 DOI: 10.1016/s0304-3959(01)00435-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Adenosine (ADO) is an inhibitory neuromodulator that can increase nociceptive thresholds in response to noxious stimulation. Inhibition of the ADO-metabolizing enzyme, adenosine kinase (AK) increases extracellular ADO concentrations at sites of tissue trauma and AK inhibitors may have therapeutic potential as analgesic and anti-inflammatory agents. N7-((1'R,2'S,3'R,4'S)-2',3'-dihydroxy-4'-amino-cyclopentyl)-4-amino-5-bromo-pyrrolo[2,3-a]pyrimidine (A-286501) is a novel and potent (IC50=0.47 nM) carbocyclic nucleoside AK inhibitor that has no significant activity (IC50 >100 microM) at other sites of ADO interaction (A1, A2A, A3 receptors, ADO transporter, and ADO deaminase) or other (IC50 value >10 microM) neurotransmitter and peptide receptors, ion channel proteins, neurotransmitter reuptake sites and enzymes, including cyclooxygenases-1 and -2. A-286501 showed equivalent potency to inhibit AK from several mammalian species and kinetic studies revealed that A-286501 was a reversible and competitive inhibitor with respect to ADO and non-competitive with respect to MgATP2-. A-286501 was orally effective to reduce nociception in animal models of acute (thermal), inflammatory (formalin and carrageenan), and neuropathic (L5/L6 nerve ligation and streptozotocin-induced diabetic) pain. A-286501 was particularly potent (ED50=1 micromol/kg, p.o.) to reduce carrageenan-induced inflammatory thermal hyperalgesia as compared to its analgesic actions in other pain models (acute and neuropathic) and its ability to alter hemodynamic function and motor performance. A-286501 was also effective to reduce carrageenan-induced paw edema and myeloperoxidase activity, a measure of neutrophil influx (ED50=10 micromol/kg, p.o.), in the injured paw. The anti-nociceptive effects of A-286501 in the L5/L6 nerve injury model of neuropathic pain (ED50=20 micromol/kg, p.o.) were not blocked by the opioid antagonist naloxone, but were blocked by the ADO receptor antagonist, theophylline. Following repeated administration, A-286501 showed less potential to produce tolerance as compared to morphine. Thus, A-286501 is a structurally novel AK inhibitor that effectively attenuates nociception by a non-opioid, non-non-steroidal anti-inflammatory drug ADO, receptor mediated mechanism.
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Affiliation(s)
- Michael F Jarvis
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, IL 60064-6123, USA.
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28
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Surman MD, Mulvihill MJ, Miller MJ. Novel 1,4-benzodiazepines from acylnitroso-derived hetero-Diels-Alder cycloadducts. Org Lett 2002; 4:139-41. [PMID: 11772110 DOI: 10.1021/ol017036w] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] N(4)-Hydroxy-1,4-benzodiazepines were synthesized in a single step from synthetically versatile acylnitroso-derived hetero-Diels-Alder cycloadducts. The efficiency of this transformation was found to be dependent on the NH pK(a) of the cycloadduct sulfonamide.
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Affiliation(s)
- Matthew D Surman
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA
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29
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Flower KR, Lightfoot AP, Wan H, Whiting A. The development and application of ruthenium catalysed oxidations of a hydroxamic acid and in situ Diels–Alder trapping of the acyl nitroso derivative. ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b206430h] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Yamashita M, Mallikarjuna Reddy P, Kato Y, Krishna Reddy V, Suzuki K, Oshikawa T. Synthesis of novel deoxy lambda(5) phospha sugar nucleosides: 1,3-dipolar cycloaddition of an azidophospholane with alkynes. Carbohydr Res 2001; 336:257-70. [PMID: 11728394 DOI: 10.1016/s0008-6215(01)00264-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Several novel phospha sugar nucleosides, analogs of normal sugar nucleosides, were synthesized from a phospholene 1-oxide derivative. Bromination of a phospholene precursor in aqueous organic medium gave regio diastereomers, the threo and erythro bromohydrins 3 (1-bromo-1,3,4-trideoxy-1,4-C-[(R,S)-phenylphosphinylidene]-glycero-tetrofuranose). Further substitution of the threo isomer 3a with sodium azide led to its corresponding azidophospholane 4 (1-azido-1,3,4-trideoxy-2-methyl-1,4-C-[(R)-phenylphosphinylidene]-beta-D-glycero-tetrofuranose). 1,3-Dipolar cycloaddition of 4 with various electron-deficient and electron-rich alkynes afforded triazole derivatives that are nucleoside analogues. The strong electron-withdrawing phosphoryl group in the hemiacetal ring exerted no effect over reaction regioselectivity of the 1,3-dipolar cycloaddition, but steric effects of the alkynes played a vital role on the selectivity, since the regioisomer ratios and the rates and yields of cycloadducts changed as the bulkiness of the substituents on the acetylene changes. Structures of all compounds were unequivocally confirmed by 1H, 13C, and 31P NMR and mass spectral studies. Single crystal X-ray crystallographic analysis of some derivatives allowed determination of configuration of the phospha sugar nucleosides.
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Affiliation(s)
- M Yamashita
- Department of Materials Chemistry, Faculty of Engineering, Shizuoka University, Hamamatsu 432-8561, Japan.
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31
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McGaraughty S, Cowart M, Jarvis MF. Recent developments in the discovery of novel adenosine kinase inhibitors: mechanism of action and therapeutic potential. CNS DRUG REVIEWS 2001; 7:415-32. [PMID: 11830758 PMCID: PMC6741667 DOI: 10.1111/j.1527-3458.2001.tb00208.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Adenosine (ADO) is an endogenous inhibitory neuromodulator that limits cellular excitability in response to tissue trauma and inflammation. Adenosine kinase (AK; EC 2.7.1.20) is the primary metabolic enzyme regulating intra- and extracellular concentrations of ADO. AK inhibitors have been shown to significantly increase ADO concentrations at sites of tissue injury and to provide effective antinociceptive, antiinflammatory, and anticonvulsant activity in animal models. Structurally novel nucleoside and non-nucleoside AK inhibitors that demonstrate high specificity for the AK enzyme compared with other ADO metabolic enzymes, transporters, and receptors have recently been synthesized. These compounds have also demonstrated improved cellular and tissue penetration compared with earlier tubercidin analogs. These compounds have been shown to exert beneficial effects in animal models of pain, inflammation and epilepsy with reduced cardiovascular side effects compared with direct acting ADO receptor (P1) agonists, thus supporting the hypothesis that AK inhibitors can enhance the actions of ADO in a site- and event-specific fashion.
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Affiliation(s)
- Steve McGaraughty
- Neuroscience, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbot Park, IL, USA
| | - Marlon Cowart
- Neuroscience, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbot Park, IL, USA
| | - Michael F. Jarvis
- Neuroscience, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbot Park, IL, USA
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32
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Surman MD, Miller MJ. Synthesis of a conformationally restricted substrate analogue of siderophore biosynthetases. Org Lett 2001; 3:519-21. [PMID: 11178814 DOI: 10.1021/ol006813+] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] A conformationally restricted analogue (5) of N(omega)-acetyl-N(omega)-hydroxyornithine and -lysine was synthesized. The synthesis features an efficient acylnitroso hetero-Diels-Alder cycloadduct (1) ring opening with palladium(0) and methylnitroacetate.
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Affiliation(s)
- M D Surman
- Department of Chemistry and Biochemistry, University of Notre Dame, Indiana 46556, USA
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33
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Cowart M, Lee CH, Gfesser GA, Bayburt EK, Bhagwat SS, Stewart AO, Yu H, Kohlhaas KL, McGaraughty S, Wismer CT, Mikusa J, Zhu C, Alexander KM, Jarvis MF, Kowaluk EA. Structure-activity studies of 5-substituted pyridopyrimidines as adenosine kinase inhibitors. Bioorg Med Chem Lett 2001; 11:83-6. [PMID: 11140740 DOI: 10.1016/s0960-894x(00)00602-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The synthesis and SAR of a novel series of non-nucleoside pyridopyrimidine inhibitors of the enzyme adenosine kinase (AK) are described. It was found that pyridopyrimidines with a broad range of medium and large non-polar substituents at the 5-position potently inhibited AK activity. A narrower range of analogues was capable of potently inhibiting adenosine phosphorylation in intact cells indicating an enhanced ability of these analogues to penetrate cell membranes. Potent AK inhibitors were found to effectively reduce nociception in animal models of thermal hyperalgesia and persistent pain.
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Affiliation(s)
- M Cowart
- Neurological and Urological Diseases Research, Abbott Laboratories, Abhott Park, IL 60064, USA.
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34
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Rösler A, Panayotou G, Hornby DP, Barlow T, Brown T, Pearl LH, Savva R, Blackburn GM. The mechanism of DNA repair by uracil-DNA glycosylase: studies using nucleotide analogues. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2000; 19:1505-16. [PMID: 11200255 DOI: 10.1080/15257770008045442] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
2',4'-Dideoxy-4'-methyleneuridine incorporated into oligodeoxynucleotides forms regular B-DNA duplexes as shown by Tm and CD measurements. Such oligomers are not cleaved by the DNA repair enzyme, UDG, which cleaves the glycosylic bond in dU but not in dT nor in dC nucleosides in single stranded and double stranded DNA. Differential binding of oligomers containing carbadU, 4'-thiodU, and dU residues to wild type and mutant UDG proteins identify an essential role for the furanose 4'-oxygen in recognition and cleavage of dU residues in DNA.
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Affiliation(s)
- A Rösler
- Krebs Institute, Department of Chemistry, Sheffield University, UK
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35
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Jenkins NE, Ware RW, Atkinson RN, King SB. Generation of Acyl Nitroso Compounds by the Oxidation of N-Acyl Hydroxylamines with the Dessmartin Periodinane. SYNTHETIC COMMUN 2000. [DOI: 10.1080/00397910008087108] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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