1
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Bazin MA, Cojean S, Pagniez F, Bernadat G, Cavé C, Ourliac-Garnier I, Nourrisson MR, Morgado C, Picot C, Leclercq O, Baratte B, Robert T, Späth GF, Rachidi N, Bach S, Loiseau PM, Le Pape P, Marchand P. In vitro identification of imidazo[1,2-a]pyrazine-based antileishmanial agents and evaluation of L. major casein kinase 1 inhibition. Eur J Med Chem 2020; 210:112956. [PMID: 33148491 DOI: 10.1016/j.ejmech.2020.112956] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/19/2020] [Accepted: 10/19/2020] [Indexed: 12/15/2022]
Abstract
Leishmaniasis constitutes a severe public health problem, with an estimated prevalence of 12 million cases. This potentially fatal disease has a worldwide distribution and in 2012, the fatal Visceral Leishmaniasis (VL) was declared as new emerging disease in Europe, mainly due to global warming, with expected important public health impact. The available treatments are toxic, costly or lead to parasite resistance, thus there is an urgent need for new drugs with new mechanism of action. Previously, we reported the discovery of CTN1122, a potent imidazo[1,2-a]pyrazine-based antileishmanial hit compound targeting L-CK1.2 at low micromolar ranges. Here, we described structurally related, safe and selective compounds endowed with antiparasitic properties, better than miltefosine, the reference therapy by oral route. L-CK1.2 homology model gave the first structural explanations of the role of 4-pyridyl (CTN1122) and 2-aminopyrimidin-4-yl (compound 21) moieties, at the position 3 of the central core, in the low micromolar to nanomolar L-CK1.2 inhibition, whereas N-methylpyrazole derivative 11 remained inactive against the parasite kinase.
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Affiliation(s)
- Marc-Antoine Bazin
- Université de Nantes, Cibles et Médicaments des Infections et du Cancer, IICiMed, EA 1155, F-44000, Nantes, France
| | - Sandrine Cojean
- BioCIS Biomolécules: Conception, Isolement, Synthèse, Chimiothérapie Antiparasitaire, UMR CNRS 8076, Univ. Paris-Sud, Université Paris-Saclay, Faculté de Pharmacie, F-92296, Châtenay-Malabry, France
| | - Fabrice Pagniez
- Université de Nantes, Cibles et Médicaments des Infections et du Cancer, IICiMed, EA 1155, F-44000, Nantes, France
| | - Guillaume Bernadat
- BioCIS Biomolécules: Conception, Isolement, Synthèse, Chimiothérapie Antiparasitaire, UMR CNRS 8076, Univ. Paris-Sud, Université Paris-Saclay, Faculté de Pharmacie, F-92296, Châtenay-Malabry, France
| | - Christian Cavé
- BioCIS Biomolécules: Conception, Isolement, Synthèse, Chimiothérapie Antiparasitaire, UMR CNRS 8076, Univ. Paris-Sud, Université Paris-Saclay, Faculté de Pharmacie, F-92296, Châtenay-Malabry, France
| | - Isabelle Ourliac-Garnier
- Université de Nantes, Cibles et Médicaments des Infections et du Cancer, IICiMed, EA 1155, F-44000, Nantes, France
| | - Marie-Renée Nourrisson
- Université de Nantes, Cibles et Médicaments des Infections et du Cancer, IICiMed, EA 1155, F-44000, Nantes, France
| | - Cathy Morgado
- Université de Nantes, Cibles et Médicaments des Infections et du Cancer, IICiMed, EA 1155, F-44000, Nantes, France
| | - Carine Picot
- Université de Nantes, Cibles et Médicaments des Infections et du Cancer, IICiMed, EA 1155, F-44000, Nantes, France
| | - Olivier Leclercq
- Institut Pasteur and Institut National de Santé et Recherche Médicale INSERM U1201, Unité de Parasitologie Moléculaire et Signalisation, F-75015, Paris, France
| | - Blandine Baratte
- Sorbonne Université, CNRS, UMR8227, Integrative Biology of Marine Models Laboratory (LBI2M), Station Biologique de Roscoff, F-29680, Roscoff, France; Sorbonne Université, CNRS, FR2424, Kinase Inhibitor Specialized Screening Facility - KISSf, Station Biologique, F-29680, Roscoff, France
| | - Thomas Robert
- Sorbonne Université, CNRS, UMR8227, Integrative Biology of Marine Models Laboratory (LBI2M), Station Biologique de Roscoff, F-29680, Roscoff, France; Sorbonne Université, CNRS, FR2424, Kinase Inhibitor Specialized Screening Facility - KISSf, Station Biologique, F-29680, Roscoff, France
| | - Gérald F Späth
- Institut Pasteur and Institut National de Santé et Recherche Médicale INSERM U1201, Unité de Parasitologie Moléculaire et Signalisation, F-75015, Paris, France
| | - Najma Rachidi
- Institut Pasteur and Institut National de Santé et Recherche Médicale INSERM U1201, Unité de Parasitologie Moléculaire et Signalisation, F-75015, Paris, France
| | - Stéphane Bach
- Sorbonne Université, CNRS, UMR8227, Integrative Biology of Marine Models Laboratory (LBI2M), Station Biologique de Roscoff, F-29680, Roscoff, France; Sorbonne Université, CNRS, FR2424, Kinase Inhibitor Specialized Screening Facility - KISSf, Station Biologique, F-29680, Roscoff, France
| | - Philippe M Loiseau
- BioCIS Biomolécules: Conception, Isolement, Synthèse, Chimiothérapie Antiparasitaire, UMR CNRS 8076, Univ. Paris-Sud, Université Paris-Saclay, Faculté de Pharmacie, F-92296, Châtenay-Malabry, France
| | - Patrice Le Pape
- Université de Nantes, Cibles et Médicaments des Infections et du Cancer, IICiMed, EA 1155, F-44000, Nantes, France
| | - Pascal Marchand
- Université de Nantes, Cibles et Médicaments des Infections et du Cancer, IICiMed, EA 1155, F-44000, Nantes, France.
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2
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Hagiwara H. Aspects in the Total Syntheses of Higher Terpenoids Starting From Wieland–Miescher Ketone and Its Derivative: A Review. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20925340] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Synthetic studies of higher terpenoids starting from Wieland–Miescher ketone since 2012 have been compiled.
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Affiliation(s)
- Hisahiro Hagiwara
- Graduate School of Science and Technology, Niigata University, Nishi-Ku, Niigata, Japan
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3
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Karakaya I, Primer D, Molander GA. Photoredox Cross-Coupling: Ir/Ni Dual Catalysis for the Synthesis of Benzylic Ethers. Org Lett 2015; 17:3294-7. [PMID: 26079182 PMCID: PMC4854197 DOI: 10.1021/acs.orglett.5b01463] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Indexed: 11/30/2022]
Abstract
Single-electron transmetalation has emerged as an enabling paradigm for the cross-coupling of Csp(3) hybridized organotrifluoroborates. Cross-coupling of α-alkoxymethyltrifluoroborates with aryl and heteroaryl bromides has been demonstrated by employing dual catalysis with a combination of an iridium photoredox catalyst and a Ni cross-coupling catalyst. The resulting method enables the alkoxymethylation of diverse (hetero)arenes under mild, room-temperature conditions.
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Affiliation(s)
- Idris Karakaya
- Department
of Chemistry, Faculty of Sciences and Letters, Osmaniye Korkut Ata University, 80000 Osmaniye, Turkey
| | - David
N. Primer
- Roy
and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Gary A. Molander
- Roy
and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
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4
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Viswanathan K, Ononye SN, Cooper HD, Kyle Hadden M, Anderson AC, Wright DL. Viridin analogs derived from steroidal building blocks. Bioorg Med Chem Lett 2012; 22:6919-22. [PMID: 23040731 DOI: 10.1016/j.bmcl.2012.09.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2012] [Accepted: 09/04/2012] [Indexed: 11/20/2022]
Abstract
Naturally occurring furanosteroids such as viridin and wortmannin have long been known as potent inhibitors of the lipid kinase PI-3K. We have been interested in directly accessing analogs of these complex natural products from abundant steroid feedstock materials. In this communication, we describe the synthesis of viridin/wortmannin hybrid molecules from readily available building blocks that function as PI-3K inhibitors and maintain their electrophilic properties. The compounds also show anti-proliferative effects against a breast cancer line.
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Affiliation(s)
- Kishore Viswanathan
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, United States
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5
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Molander GA, Beaumard F. Cross-coupling of mesylated phenol derivatives with potassium alkoxymethyltrifluoroborates. Org Lett 2011; 13:3948-51. [PMID: 21732594 DOI: 10.1021/ol201469r] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Cross-coupling of mesylated phenol derivatives with various potassium alkoxymethyltrifluoroborates has been achieved. The corresponding aryl and heteroaryl alkoxymethyl compounds have been obtained with equal facility with both electron-rich and electron-poor substituents on the activated alcohol.
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Affiliation(s)
- Gary A Molander
- Roy and Diana A. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA.
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6
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Baeza A, Mendiola J, Burgos C, Alvarez-Builla J, Vaquero JJ. Application of Selective Palladium-Mediated Functionalization of the Pyrido[3′,2′:4,5]pyrrolo[1,2-c]pyrimidine Heterocyclic System for the Total Synthesis of Variolin B and Deoxyvariolin B. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000599] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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7
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Metzger A, Melzig L, Despotopoulou C, Knochel P. Pd-catalyzed cross-coupling of functionalized organozinc reagents with thiomethyl-substituted heterocycles. Org Lett 2010; 11:4228-31. [PMID: 19691353 DOI: 10.1021/ol9017003] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Various thiomethyl-substituted N-heterocycles (pyridines, pyrimidines, pyrazines, pyridazines, triazines, benzothiazoles, benzoxazoles, pyrazoles, benzindazoles, quinazolines, etc.) undergo smooth Pd-catalyzed cross-coupling reactions with functionalized aryl-, heteroaryl-, benzylic-, and alkylzinc reagents using Pd(OAc)(2)/S-Phos as the catalytic system mostly at 25 degrees C. No copper salt is required to perform these reactions.
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Affiliation(s)
- Albrecht Metzger
- Department Chemie und Biochemie, Ludwig-Maximilians-University, Butenandtstr. 5-13, 81377, Munich, Germany
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8
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Slagt VF, de Vries AHM, de Vries JG, Kellogg RM. Practical Aspects of Carbon−Carbon Cross-Coupling Reactions Using Heteroarenes. Org Process Res Dev 2009. [DOI: 10.1021/op900221v] [Citation(s) in RCA: 179] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Vincent F. Slagt
- Syncom BV, Kadijk 3, 9747 AT Groningen, The Netherlands, DSM Pharmaceutical Products - Innovative Synthesis and Catalysis, P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - André H. M. de Vries
- Syncom BV, Kadijk 3, 9747 AT Groningen, The Netherlands, DSM Pharmaceutical Products - Innovative Synthesis and Catalysis, P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Johannes G. de Vries
- Syncom BV, Kadijk 3, 9747 AT Groningen, The Netherlands, DSM Pharmaceutical Products - Innovative Synthesis and Catalysis, P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Richard M. Kellogg
- Syncom BV, Kadijk 3, 9747 AT Groningen, The Netherlands, DSM Pharmaceutical Products - Innovative Synthesis and Catalysis, P.O. Box 18, 6160 MD Geleen, The Netherlands
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9
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Molander G, Canturk B. Organotrifluorborate und einfach koordinierte Palladiumkomplexe als Katalysatoren â die perfekte Kombination für die Suzuki-Miyaura-Kupplung. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200904306] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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10
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Gudmundsson KS, Johns BA, Weatherhead J. Pyrazolopyrimidines and pyrazolotriazines with potent activity against herpesviruses. Bioorg Med Chem Lett 2009; 19:5689-92. [DOI: 10.1016/j.bmcl.2009.08.009] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2009] [Revised: 08/03/2009] [Accepted: 08/04/2009] [Indexed: 10/20/2022]
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11
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Molander GA, Canturk B. Organotrifluoroborates and monocoordinated palladium complexes as catalysts--a perfect combination for Suzuki-Miyaura coupling. Angew Chem Int Ed Engl 2009; 48:9240-61. [PMID: 19899086 PMCID: PMC2917751 DOI: 10.1002/anie.200904306] [Citation(s) in RCA: 381] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Monocoordinated palladium catalysts derived from sterically hindered, electron-rich phosphines or N-heterocyclic carbenes have revolutionized the Suzuki-Miyaura coupling reaction. The emergence of organotrifluoroborates has provided important new perspectives for the organoboron component of these reactions. In combination, these two components prove to be extraordinarily powerful partners for cross-coupling reactions.
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Affiliation(s)
- Gary A Molander
- Department of Chemistry, University of Pennsylvania, 231 S. 34th Street, Philadelphia, PA 19104-6323, USA.
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12
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Molander GA, Canturk B. Preparation of potassium alkoxymethyltrifluoroborates and their cross-coupling with aryl chlorides. Org Lett 2008; 10:2135-8. [PMID: 18439019 DOI: 10.1021/ol800532p] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A wide variety of alkoxymethyltrifluoroborate substrates were prepared via SN2 displacement of potassium bromomethyltrifluoroborate with various alkoxides in excellent yields. These alkoxymethyltrifluoroborates were effectively cross-coupled with several aryl chlorides. This method provides a unique dissonant disconnect that allows greater flexibility in the design of new and improved synthetic pathways.
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Affiliation(s)
- Gary A Molander
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA.
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13
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Stadler AM, Kyritsakas N, Graff R, Lehn JM. Formation of RACK- and grid-type metallosupramolecular architectures and generation of molecular motion by reversible uncoiling of helical ligand strands. Chemistry 2007; 12:4503-22. [PMID: 16721729 DOI: 10.1002/chem.200501202] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The interaction of appropriate metal ions (Pb(II), Zn(II)) with helical ligand strands, obtained by hydrazone polycondensation, generates polymetallic supramolecular architectures of rack and grid types, by uncoiling of the ligand. The interconversion between the helical free ligand and the linearly extended ligand in the complexes produces reversible ion-induced, nanomechanical molecular motions of large amplitude. It has been integrated in an acid-base neutralisation fuelled process, which links the extension/contraction of the ligand strands to alternating changes in pH.
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Affiliation(s)
- Adrian-Mihail Stadler
- Institut de Science et d'Ingénierie Supramoléculaires, Université Louis Pasteur, 8 Allée Gaspard Monge, 67000 Strasbourg, France.
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14
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The development of 2-benzimidazole substituted pyrimidine based inhibitors of lymphocyte specific kinase (Lck). Bioorg Med Chem Lett 2006; 16:5973-7. [PMID: 16997556 DOI: 10.1016/j.bmcl.2006.08.132] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2006] [Revised: 08/30/2006] [Accepted: 08/31/2006] [Indexed: 11/30/2022]
Abstract
This communication details the synthesis, biological activity, and binding mode of a novel class of 2-benzimidazole substituted pyrimidines. The most potent analogs disclosed showed low nanomolar activity for the inhibition of Lck kinase and a representative analog was co-crystallized with Hck (a structurally related member of the Src family kinases).
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15
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Microwave-assisted, efficient and regioselective Pd-catalyzed C-phenylation of halopyrimidines. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.04.082] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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16
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Mendiola J, Castellote I, Alvarez-Builla J, Fernández-Gadea J, Gómez A, Vaquero JJ. Palladium-Catalyzed Arylation and Heteroarylation of Azolopyrimidines. J Org Chem 2006; 71:1254-7. [PMID: 16438549 DOI: 10.1021/jo051848e] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A comparative study of the palladium-catalyzed arylation and heteroarylation of 5-bromoazolopyrimidines shows that aryl and electron-rich heteroaryl boronic acids gave higher yields than those obtained using the corresponding aryl and heteroaryl tributyl stannanes. In contrast, the reaction with electron-poor heteroaryl tributyl stannanes gave better results than the corresponding boronic acids.
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Affiliation(s)
- Javier Mendiola
- Departamento de Química Orgánica, Universidad de Alcalá, 28871-Alcalá de Henares, Madrid, Spain
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17
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Anderson RJ, Hill JB, Morris JC. Concise Total Syntheses of Variolin B and Deoxyvariolin B. J Org Chem 2005; 70:6204-12. [PMID: 16050678 DOI: 10.1021/jo050523v] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The total synthesis of the marine alkaloid variolin B has been achieved in 8 steps and 17% overall yield, starting from commercially available 4-chloro-2-methylthiopyrimidine. The key reaction involves the tandem deoxygenation and cyclization of a triarylmethanol using a combination of triethylsilane and trifluoroacetic acid. In addition, the deoxygenated analogue was prepared in 6 steps and 23% overall yield, starting from the same starting material.
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Affiliation(s)
- Regan J Anderson
- Department of Chemistry, University of Canterbury, Christchurch, New Zealand
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18
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Johns BA, Gudmundsson KS, Turner EM, Allen SH, Samano VA, Ray JA, Freeman GA, Boyd FL, Sexton CJ, Selleseth DW, Creech KL, Moniri KR. Pyrazolopyridine antiherpetics: SAR of C2′ and C7 amine substituents. Bioorg Med Chem 2005; 13:2397-411. [DOI: 10.1016/j.bmc.2005.01.044] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2004] [Revised: 01/24/2005] [Accepted: 01/25/2005] [Indexed: 10/25/2022]
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19
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Revesz L, Blum E, Di Padova FE, Buhl T, Feifel R, Gram H, Hiestand P, Manning U, Rucklin G. Novel p38 inhibitors with potent oral efficacy in several models of rheumatoid arthritis. Bioorg Med Chem Lett 2005; 14:3595-9. [PMID: 15177482 DOI: 10.1016/j.bmcl.2004.03.106] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2004] [Revised: 03/22/2004] [Accepted: 03/29/2004] [Indexed: 10/26/2022]
Abstract
A library of trisubstituted oxazoles, thiazoles, imidazoles (1,2,4- and 2,4,5-substituted) and imidazo[1,2-b]pyridines was prepared and evaluated in vitro as p38alpha inhibitors and in vivo in several models of rheumatoid arthritis. Four structures--32, 37, 45 and 59--were identified as potent inhibitors of p38alpha with high efficacy in the LPS induced TNFalpha release model in the mouse, the adjuvant induced arthritis and the collagen induced arthritis in the rat with ED50s between 1.0 and 9.5 mg/kg p.o.
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Affiliation(s)
- Laszlo Revesz
- Novartis Institutes for BioMedical Research, Arthritis & Bone Metabolism, CH-4002 Basel, Switzerland.
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20
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Mendiola J, Baeza A, Alvarez-Builla J, Vaquero JJ. Reaction of Bromomethylazoles and Tosylmethyl Isocyanide. A Novel Heterocyclization Method for the Synthesis of the Core of Marine Alkaloids Variolins and Related Azolopyrimidines. J Org Chem 2004; 69:4974-83. [PMID: 15255724 DOI: 10.1021/jo0358168] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel and efficient synthesis of the pyrido[3',2':4,5]pyrrolo[1,2-c]pyrimidine system, the heterocyclic core of the variolin family of marine alkaloids, is described. The route involves the reaction of 3-bromo-2-(bromomethyl)pyrrolo[2,3-b]pyridine and tosylmethyl isocyanide (TosMIC) under phase-transfer conditions. This unprecedented reaction was also used to synthesize a series of new methoxycarbonyl azolopyrimidines by reaction of TosMIC with bromomethylindoles, bromomethylbenzimidazole, and bromomethylpyrazole. Hydrolysis and decarboxylation of 5-bromo-7-methoxycarbonylpyrido[3',2':4,5]pyrrolo[1,2-c]pyrimidine obtained by this heterocyclization process and installation of the pyrimidine moiety in the C5 position open an alternative approach to complete a total synthesis of variolin B.
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Affiliation(s)
- Javier Mendiola
- Departamento de Química Orgánica, Universidad de Alcalá, 28871-Alcalá de Henares, Madrid, Spain
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21
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Ahaidar A, Fernández D, Danelón G, Cuevas C, Manzanares I, Albericio F, Joule JA, Alvarez M. Total Syntheses of Variolin B and Deoxyvariolin B1. J Org Chem 2003; 68:10020-9. [PMID: 14682696 DOI: 10.1021/jo035332b] [Citation(s) in RCA: 45] [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
Two alternative synthetic routes have been developed for the preparation of variolin B and deoxyvariolin B. The strategy is based on the preparation of the core tricyclic ring common to all variolins, pyrido[3',2':4,5]pyrrolo[1,2-c]pyrimidine, followed by a palladium-catalyzed cross-coupling reaction to give the tetracyclic system.
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Affiliation(s)
- Abderaouf Ahaidar
- Barcelona Biomedical Research Institute, Barcelona Scientific Park, University of Barcelona, Josep Samitier 1-5, E 08028 Barcelona, Spain
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22
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Brown D, Muranjan S, Thummel R. The Preparation and Study of Bis(2-quinolyl) and Bis(2-[1,8]naphthyridyl) Derivatives of Pyrimidine and Pyrazine as Bridging Ligands for RuII. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200300185] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Abstract
The synthesis of 2-substituted isomers of the meridianins, a familiy of bioactive indole alkaloids isolated from the tunicate Aplidium meridianum, was undertaken. The synthetic route comprises six steps, with a microwave promoted Fischer cyclization as the key reaction.
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Affiliation(s)
- Laura Hernández Franco
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
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24
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Lange UEW, Braje WM, Amberg W, Kettschau G. Solid-phase synthesis of endothelin receptor antagonists. Bioorg Med Chem Lett 2003; 13:1721-4. [PMID: 12729650 DOI: 10.1016/s0960-894x(03)00236-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
A new solid-phase synthesis for ET receptor antagonists suitable for automation is presented. A support bound 2-hydroxybutyric acid derivative was converted to the corresponding ether derivatives using 4-halo-2-methylsulfonylpyrimidines. Subsequent Suzuki coupling with various aryl boronic acids gave the desired antagonists in good yields and purities. Highly potent antagonists with excellent selectivity for ET(A) were obtained.
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Gudmundsson KS, Johns BA. Synthesis of novel imidazo[1,2-a]pyridines with potent activity against herpesviruses. Org Lett 2003; 5:1369-72. [PMID: 12688761 DOI: 10.1021/ol0343616] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] Synthesis of a novel imidazopyridine with potent activity against herpes simplex viruses is presented. Several synthetic approaches that describe the introduction of a C-3 pyrimidine substituent on the imidazopyridine core via construction of the pyrimidine or Stille coupling are outlined. Methodology for efficient installation of C-8 amine substituents was developed. The outlined strategies provide a high-yielding, scalable route that is amenable to rapid analogue synthesis.
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Affiliation(s)
- Kristjan S Gudmundsson
- Department of Medicinal Chemistry, GlaxoSmithKline Research & Development, Five Moore Drive, P.O. Box 13398, Research Triangle Park, North Carolina 27709-3398, USA.
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Brown D, Muranjan S, Jang Y, Thummel R. Di-[1,10]-phenanthrolinyl diazines: a new family of bis-tridentate chelators. Org Lett 2002; 4:1253-6. [PMID: 11950335 DOI: 10.1021/ol0172572] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of three bis-tridentate bridging ligands has been prepared in which two 1,10-phenanthroline units have been symmetrically appended to a central pyridazine, pyrimidine, or pyrazine ring. These ligands have been treated with [Ru(tpy-d(11))Cl(3)] to afford both mono- and bimetallic complexes that show very self-consistent NMR properties. [structure: see text]
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Affiliation(s)
- Darren Brown
- Department of Chemistry, University of Houston, Houston, TX 77204-5003, USA
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Anderson RJ, Morris JC. Studies toward the total synthesis of the variolins: rapid entry to the core structure. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(00)01772-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Leprêtre A, Turck A, Plé N, Quéguiner G. Syntheses in the Nitrogen π-Deficient Heterocycles Series Using a Barbier Type Reaction Under Sonication. Diazines. Part 29. Tetrahedron 2000. [DOI: 10.1016/s0040-4020(00)00291-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cuccia LA, Lehn JM, Homo JC, Schmutz M. Encoded Helical Self-Organization and Self-Assembly into Helical Fibers of an Oligoheterocyclic Pyridine – Pyridazine Molecular Strand. Angew Chem Int Ed Engl 2000. [DOI: 10.1002/(sici)1521-3757(20000103)112:1<239::aid-ange239>3.0.co;2-n] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Chen XT, Bhattacharya SK, Zhou B, Gutteridge CE, Pettus TRR, Danishefsky SJ. The Total Synthesis of Eleutherobin. J Am Chem Soc 1999. [DOI: 10.1021/ja990215c] [Citation(s) in RCA: 105] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiao-Tao Chen
- Contribution from the Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027, and the Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, New York 10021
| | - Samit K. Bhattacharya
- Contribution from the Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027, and the Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, New York 10021
| | - Bishan Zhou
- Contribution from the Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027, and the Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, New York 10021
| | - Clare E. Gutteridge
- Contribution from the Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027, and the Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, New York 10021
| | - Thomas R. R. Pettus
- Contribution from the Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027, and the Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, New York 10021
| | - Samuel J. Danishefsky
- Contribution from the Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027, and the Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, New York 10021
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Liverton NJ, Butcher JW, Claiborne CF, Claremon DA, Libby BE, Nguyen KT, Pitzenberger SM, Selnick HG, Smith GR, Tebben A, Vacca JP, Varga SL, Agarwal L, Dancheck K, Forsyth AJ, Fletcher DS, Frantz B, Hanlon WA, Harper CF, Hofsess SJ, Kostura M, Lin J, Luell S, O'Neill EA, O'Keefe SJ. Design and synthesis of potent, selective, and orally bioavailable tetrasubstituted imidazole inhibitors of p38 mitogen-activated protein kinase. J Med Chem 1999; 42:2180-90. [PMID: 10377223 DOI: 10.1021/jm9805236] [Citation(s) in RCA: 174] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Novel potent and selective diarylimidazole inhibitors of p38 MAP (mitogen-activated protein) kinase are described which have activity in both cell-based assays of tumor necrosis factor-alpha (TNF-alpha) release and an animal model of rheumatoid arthritis. The SAR leading to the development of selectivity against c-Raf and JNK2alpha1 kinases is presented, with key features being substitution of the 4-aryl ring with m-trifluoromethyl and substitution of the 5-heteroaryl ring with a 2-amino substituent. Cell-based activity was significantly enhanced by incorporation of a 4-piperidinyl moiety at the 2-position of the imidazole which also enhanced aqueous solubility. In general, oral bioavailability of this class of compounds was found to be poor unless the imidazole was methylated on nitrogen. This work led to identification of 48, a potent (p38 MAP kinase inhibition IC50 0.24 nM) and selective p38 MAP kinase inhibitor which inhibits lipopolysaccharide-stimulated release of TNF-alpha from human blood with an IC50 2.2 nM, shows good oral bioavailability in rat and rhesus monkey, and demonstrates significant improvement in measures of disease progression in a rat adjuvant-induced arthritis model.
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Affiliation(s)
- N J Liverton
- Department of Medicinal Chemistry, Merck Research Laboratories, West Point, Pennsylvania 19486, USA
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Plé N, Turck A, Heynderickx A, Quéguiner G. First metallation of iodo diazines. Iodo and nitrogen directed metallations. Diazines XXII. Tetrahedron 1998. [DOI: 10.1016/s0040-4020(98)00526-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Chen XT, Zhou B, Bhattacharya S, Gutteridge C, Pettus T, Danishefsky S. Totalsynthese von Eleutherobin: zum Schluß eine Überraschung. Angew Chem Int Ed Engl 1998. [DOI: 10.1002/(sici)1521-3757(19980316)110:6<835::aid-ange835>3.0.co;2-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Bassani DM, Lehn JM, Baum G, Fenske D. Gezielte Selbstorganisation eines achiralen polyheterocyclischen Stranges zu einer Helix. Angew Chem Int Ed Engl 1997. [DOI: 10.1002/ange.19971091711] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Benaglia M, Toyota S, Woods CR, Siegel JS. Synthesis of pyridylstannanes from halopyridines and hexamethyldistannane with catalytic palladium. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)01025-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Linderman RJ, Siedlecki JM. Selective Copper-Catalyzed Coupling Reactions of (alpha-Acetoxyhexyl)tricyclohexyltin. J Org Chem 1996; 61:6492-6493. [PMID: 11667508 DOI: 10.1021/jo961161h] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Russell J. Linderman
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204
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Bates RW, Gabel CJ, Ji J, Rama-Devi T. Synthesis of phenolic natural products using palladium catalyzed coupling reactions. Tetrahedron 1995. [DOI: 10.1016/0040-4020(95)00441-a] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Undheim K, Benneche T. Organometallics in Coupling Reactions in π-Deficient Azaheterocycles. ADVANCES IN HETEROCYCLIC CHEMISTRY 1995. [DOI: 10.1016/s0065-2725(08)60424-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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Stannylation in the electrophilic 2- and 4/6-pyrimidine position and the use of Stannylpyrimidines in coupling and Tin-lithium exchange reactions. Tetrahedron 1994. [DOI: 10.1016/s0040-4020(01)80750-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Synthesen von hydroxylierten Bipyridinen, III. Synthese von unsymmetrischen und symmetrischen Dihydroxybipyridinen. ACTA ACUST UNITED AC 1992. [DOI: 10.1002/jlac.1992199201157] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Palladium catalysed intramolecular coupling of aryl and benzylic halides and related tandem cyclisations. A simple synthesis of hippadine. Tetrahedron Lett 1991. [DOI: 10.1016/s0040-4039(00)79397-x] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sakamoto T, Kondo Y, Uchiyama D, Yamanaka H. Condensed heteroaromatic ring systems. XIX. Synthesis and reactions of 5-(tributylstannyl)isoxazoles. Tetrahedron 1991. [DOI: 10.1016/s0040-4020(01)87123-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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