1
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Wei KF, Liu Q, Ma G, Jiang XL, Zhu XH, Ru GX, Shen WB. Regioselective access to polycyclic N-heterocycles via homogeneous copper-catalyzed cascade cyclization of allenynes. Commun Chem 2023; 6:104. [PMID: 37258704 DOI: 10.1038/s42004-023-00910-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 05/23/2023] [Indexed: 06/02/2023] Open
Abstract
Polycyclic N-heterocycles are important structural motifs commonly found in bioactive compounds, however, their selective construction via the cyclization of allenynes remains challenging yet highly desirable. Here we show a homogeneous copper-catalyzed hetero Diels-Alder (HDA) reaction of allenynes with cis-diazenes (PTAD, 4-phenyl-1,2,4-triazoline-3,5-dione), allowing the practical and efficient synthesis of a diverse array of valuable polycyclic N-heterocycles. A temperature-controlled and stereocontrolled chemoselectivity of the reaction was observed, leading to the chemodivergent synthesis of tetracyclic pyrrolidines, pentacyclic triazepanes and tricyclic pyrrolidines. Compared with related Au-catalyzed cyclization of allenynes, this copper catalysis achieves cyclization of allenynes terminating in C-N bond formation via the HDA reaction.
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Affiliation(s)
- Kua-Fei Wei
- College of Sciences and College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Qing Liu
- College of Sciences and College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Guang Ma
- College of Sciences and College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Xiao-Lei Jiang
- College of Sciences and College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Xiu-Hong Zhu
- College of Sciences and College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Guang-Xin Ru
- College of Sciences and College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China
| | - Wen-Bo Shen
- College of Sciences and College of Forestry, Henan Agricultural University, Zhengzhou, 450002, China.
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2
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Mortensen KT, Osberger TJ, King TA, Sore HF, Spring DR. Strategies for the Diversity-Oriented Synthesis of Macrocycles. Chem Rev 2019; 119:10288-10317. [DOI: 10.1021/acs.chemrev.9b00084] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Kim T. Mortensen
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K
| | - Thomas J. Osberger
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K
| | - Thomas A. King
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K
| | - Hannah F. Sore
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K
| | - David R. Spring
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, U.K
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3
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Wang Z, Wang Y, Wang B, Li W, Huang L, Li X. Design, Synthesis, and Evaluation of Orally Available Clioquinol-Moracin M Hybrids as Multitarget-Directed Ligands for Cognitive Improvement in a Rat Model of Neurodegeneration in Alzheimer’s Disease. J Med Chem 2015; 58:8616-37. [DOI: 10.1021/acs.jmedchem.5b01222] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Zhiren Wang
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yali Wang
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Bo Wang
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Wenrui Li
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Ling Huang
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Xingshu Li
- School of Pharmaceutical
Sciences, Sun Yat-sen University, Guangzhou, 510006, China
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4
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Abstract
In this article strategies for the design and synthesis of natural product analogues are summarized and illustrated with some selected examples.
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Affiliation(s)
- Martin E. Maier
- Institut für Organische Chemie
- Eberhard Karls Universität Tübingen
- 72076 Tübingen
- Germany
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5
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Gómez AM, Lobo F, Uriel C, López JC. Recent Developments in the Ferrier Rearrangement. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300798] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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6
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Zhou J, Zhou L, Yeung YY. Multicomponent Approach in the Synthesis of 2,2,6-Trisubstituted Morpholine Derivatives. Org Lett 2012; 14:5250-3. [DOI: 10.1021/ol3024105] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jing Zhou
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Ling Zhou
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
| | - Ying-Yeung Yeung
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543
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7
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Gerard B, Marié JC, Pandya BA, Lee MD, Liu H, Marcaurelle LA. Large-scale synthesis of all stereoisomers of a 2,3-unsaturated C-glycoside scaffold. J Org Chem 2011; 76:1898-901. [PMID: 21341742 PMCID: PMC3073442 DOI: 10.1021/jo1022926] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
All stereoisomers of a highly functionalized 2,3-unsaturated C-glycoside can be accessed in 10-100 g quantities from readily available starting materials and reagents in 3-7 steps. These chiral scaffolds contain three stereogenic centers along with orthogonally protected functional groups for downstream reactivity.
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Affiliation(s)
- Baudouin Gerard
- Chemical Biology Platform, The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Jean-Charles Marié
- Chemical Biology Platform, The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Bhaumik A. Pandya
- Chemical Biology Platform, The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Maurice D. Lee
- Chemical Biology Platform, The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Haibo Liu
- Chemical Biology Platform, The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
| | - Lisa A. Marcaurelle
- Chemical Biology Platform, The Broad Institute of MIT and Harvard, 7 Cambridge Center, Cambridge, MA 02142, USA
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8
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Fragment-based domain shuffling approach for the synthesis of pyran-based macrocycles. Proc Natl Acad Sci U S A 2011; 108:6751-6. [PMID: 21383141 DOI: 10.1073/pnas.1015255108] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Complexity and the presence of stereogenic centers have been correlated with success as compounds transition from discovery through the clinic. Here we describe the synthesis of a library of pyran-containing macrocycles with a high degree of structural complexity and up to five stereogenic centers. A key feature of the design strategy was to use a modular synthetic route with three fragments that can be readily interchanged or "shuffled" to produce subtly different variants with distinct molecular shapes. A total of 352 macrocycles were synthesized ranging in size from 14- to 16-membered rings. In order to facilitate the generation of stereostructure-activity relationships, the complete matrix of stereoisomers was prepared for each macrocycle. Solid-phase assisted parallel solution-phase techniques were employed to allow for rapid analogue generation. An intramolecular nitrile-activated nucleophilic aromatic substitution reaction was used for the key macrocyclization step.
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9
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Ciofi L, Morvillo M, Sladojevich F, Guarna A, Trabocchi A. Skeletal diversity by sequential one-pot and stepwise routes using morpholine ester scaffolds. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.09.103] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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10
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Lüthy M, Schenk K, Renaud P. Synthesis of unusual oxime ethers by reaction of tetranitromethane with B-alkylcatecholboranes. Chemistry 2010; 16:10171-7. [PMID: 20645343 DOI: 10.1002/chem.201000680] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The reaction of tetranitromethane with B-alkylcatecholboranes leads to the formation of unusual dinitrooxime ethers. A tentative mechanism is provided, which suggests the involvement of extremely fast addition of alkyl radicals to tetranitromethane. The substitution of one of the nitro groups in the oxime ethers by nucleophiles (such as secondary amines, halogens and styrene) and by radicals generated from B-alkylcatecholboranes is reported.
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Affiliation(s)
- Monique Lüthy
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
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11
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Kota S, Scampavia L, Spicer T, Beeler AB, Takahashi V, Snyder JK, Porco JA, Hodder P, Strosberg AD. A time-resolved fluorescence-resonance energy transfer assay for identifying inhibitors of hepatitis C virus core dimerization. Assay Drug Dev Technol 2010; 8:96-105. [PMID: 20035614 DOI: 10.1089/adt.2009.0217] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Binding of hepatitis C virus (HCV) RNA to core, the capsid protein, results in the formation of the nucleocapsid, the first step in the assembly of the viral particle. A novel assay was developed to discover small molecule inhibitors of core dimerization. This assay is based on time-resolved fluorescence resonance energy transfer (TR-FRET) between anti-tag antibodies labeled with either europium cryptate (Eu) or allophycocyanin (XL-665). The N-terminal 106-residue portion of core protein (core106) was tagged with either glutathione-S-transferase (GST) or a Flag peptide. Tag-free core106 was selected as the reference inhibitor. The assay was used to screen the library of pharmacologically active compounds (LOPAC) consisting of 1,280 compounds and a 2,240-compound library from the Center for Chemical Methodology and Library Development at Boston University (CMLD-BU). Ten of the 28 hits from the primary TR-FRET run were confirmed in a secondary amplified luminescent proximity homogeneous assay (ALPHA screen). One hit was further characterized by dose-response analysis yielding an IC(50) of 9.3 microM. This 513 Da compound was shown to inhibit HCV production in cultured hepatoma cells.
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Affiliation(s)
- Smitha Kota
- Department of Infectology, The Scripps Research Institute-Scripps Florida, Jupiter, Florida 33458, USA
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12
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Lalli C, Trabocchi A, Sladojevich F, Menchi G, Guarna A. Diversity-Oriented Synthesis of Morpholine-Containing Molecular Scaffolds. Chemistry 2009; 15:7871-7875. [DOI: 10.1002/chem.200900744] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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13
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Castaldi MP, Troast DM, Porco JA. Stereoselective synthesis of spirocyclic oxindoles via Prins cyclizations. Org Lett 2009; 11:3362-5. [PMID: 19719184 PMCID: PMC2739092 DOI: 10.1021/ol901201k] [Citation(s) in RCA: 91] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of spirocyclic oxindole pyran and oxepene frameworks using highly stereoselective Prins cyclizations of homoallylic and bis-homoallylic alcohols and isatin ketals is described.
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Affiliation(s)
- M. Paola Castaldi
- Department of Chemistry and Center for Chemical Methodology and Library, Development (CMLD-BU), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215
| | - Dawn M. Troast
- Department of Chemistry and Center for Chemical Methodology and Library, Development (CMLD-BU), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215
| | - John A. Porco
- Department of Chemistry and Center for Chemical Methodology and Library, Development (CMLD-BU), Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215
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14
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Jeon KO, Rayabarapu D, Rolfe A, Volp K, Omar I, Hanson PR. Metathesis Cascade Strategies (ROM-RCM-CM): A DOS approach to Skeletally Diverse Sultams. Tetrahedron 2009; 65:4992-5000. [PMID: 20161277 PMCID: PMC2702866 DOI: 10.1016/j.tet.2009.03.080] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The development of a ring-opening metathesis/ring-closing metathesis/cross metathesis (ROM-RCM-CM) cascade strategy to the synthesis of a diverse collection of bi- and tricyclic sultams is reported. In this study, functionalized sultam scaffolds derived from intramolecular Diels-Alder (IMDA) reactions undergo metathesis cascades to yield a collection tricyclic sultams. Additional appendage based diversity was achieved by utilizing a variety of CM partners.
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Affiliation(s)
- Kyu Ok Jeon
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045-7582
- The Center for Chemical Methodologies and Library Development at the University of Kansas (KU-CMLD), 2121 Simons Drive, Structural Biology Center, West Campus, Lawrence, KS 66047, USA.,
| | - Dinesh Rayabarapu
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045-7582
- The Center for Chemical Methodologies and Library Development at the University of Kansas (KU-CMLD), 2121 Simons Drive, Structural Biology Center, West Campus, Lawrence, KS 66047, USA.,
| | - Alan Rolfe
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045-7582
- The Center for Chemical Methodologies and Library Development at the University of Kansas (KU-CMLD), 2121 Simons Drive, Structural Biology Center, West Campus, Lawrence, KS 66047, USA.,
| | - Kelly Volp
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045-7582
- The Center for Chemical Methodologies and Library Development at the University of Kansas (KU-CMLD), 2121 Simons Drive, Structural Biology Center, West Campus, Lawrence, KS 66047, USA.,
| | - Iman Omar
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045-7582
- The Center for Chemical Methodologies and Library Development at the University of Kansas (KU-CMLD), 2121 Simons Drive, Structural Biology Center, West Campus, Lawrence, KS 66047, USA.,
| | - Paul R. Hanson
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045-7582
- The Center for Chemical Methodologies and Library Development at the University of Kansas (KU-CMLD), 2121 Simons Drive, Structural Biology Center, West Campus, Lawrence, KS 66047, USA.,
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15
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Nandy JP, Prakesch M, Khadem S, Reddy PT, Sharma U, Arya P. Advances in Solution- and Solid-Phase Synthesis toward the Generation of Natural Product-like Libraries. Chem Rev 2009; 109:1999-2060. [DOI: 10.1021/cr800188v] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jyoti P. Nandy
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Michael Prakesch
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Shahriar Khadem
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - P. Thirupathi Reddy
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Utpal Sharma
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Prabhat Arya
- Ontario Institute for Cancer Research, MaRS Centre, South Tower, 101 College Street, Toronto, Ontario M5G 1L7, Canada, Steacie Institute for Molecular Sciences, National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada, and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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16
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Herrmann A. Dynamic mixtures and combinatorial libraries: imines as probes for molecular evolution at the interface between chemistry and biology. Org Biomol Chem 2009; 7:3195-204. [DOI: 10.1039/b908098h] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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17
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Marcaurelle LA, Johannes CW. Application of natural product-inspired diversity-oriented synthesis to drug discovery. PROGRESS IN DRUG RESEARCH. FORTSCHRITTE DER ARZNEIMITTELFORSCHUNG. PROGRES DES RECHERCHES PHARMACEUTIQUES 2008; 66:187, 189-216. [PMID: 18416306 DOI: 10.1007/978-3-7643-8595-8_3] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Natural products have played a critical role in the identification of numerous medicines. Synthetic organic chemistry and combinatorial chemistry strategies such as diversity-oriented synthesis (DOS) have enabled the synthesis of natural product-like compounds. The combination of these approaches has both improved the desired biological properties of natural products as well as the identification of novel compounds. Diversity concepts and strategies to access novel compounds inspired by natural products will be reviewed.
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Affiliation(s)
- Lisa A Marcaurelle
- Broad Institute of Harvard and MIT, 7 Cambridge Center, Cambridge, MA 02412, USA.
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18
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Liu F, Stephen AG, Fisher RJ, Burke TR. Protected aminooxyprolines for expedited library synthesis: application to Tsg101-directed proline-oxime containing peptides. Bioorg Med Chem Lett 2007; 18:1096-101. [PMID: 18083557 DOI: 10.1016/j.bmcl.2007.12.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2007] [Accepted: 12/03/2007] [Indexed: 10/22/2022]
Abstract
The stereoselective synthesis of aminooxy-containing proline analogues bearing Fmoc/Boc or Fmoc/Mtt protection that renders them suitable for incorporation into peptides using Fmoc protocols is reported. Acid-catalyzed unmasking at the completion of peptide synthesis yields free aminooxy-functionalities for oxime formation through reaction with libraries of aldehydes. This allows post solid-phase diversification strategies that may facilitate structure-activity relationship studies.
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Affiliation(s)
- Fa Liu
- Laboratory of Medicinal Chemistry, CCR, NCI-Frederick, NIH, Building 376 Boyles Street, Frederick, MD 21702, USA
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19
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Peng LF, Kim SS, Matchacheep S, Lei X, Su S, Lin W, Runguphan W, Choe WH, Sakamoto N, Ikeda M, Kato N, Beeler AB, Porco JA, Schreiber SL, Chung RT. Identification of novel epoxide inhibitors of hepatitis C virus replication using a high-throughput screen. Antimicrob Agents Chemother 2007; 51:3756-9. [PMID: 17682098 PMCID: PMC2043288 DOI: 10.1128/aac.00233-07] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2007] [Revised: 05/07/2007] [Accepted: 07/28/2007] [Indexed: 11/20/2022] Open
Abstract
Using our high-throughput hepatitis C replicon assay to screen a library of over 8,000 novel diversity-oriented synthesis (DOS) compounds, we identified several novel compounds that regulate hepatitis C virus (HCV) replication, including two libraries of epoxides that inhibit HCV replication (best 50% effective concentration, < 0.5 microM). We then synthesized an analog of these compounds with optimized activity.
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Affiliation(s)
- Lee F Peng
- GI Unit, Department of Medicine, Massachusetts General Hospital, Boston, MA 02114, USA
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20
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Koroglu MA, Erol I, Korcan E, Konuk M. Synthesis and Characterization of Novel Methacrylate Monomers Having Pendant Oxime Esters and Their Copolymerization with Styrene. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2007. [DOI: 10.1080/10601320701407201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Yeager AR, Min GK, Porco JA, Schaus SE. Exploring Skeletal Diversity via Ring Contraction of Glycal-Derived Scaffolds. Org Lett 2006; 8:5065-8. [PMID: 17048844 DOI: 10.1021/ol0618252] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aryl ether C-glycoside scaffolds have been prepared from tri-O-acetyl-D-glucal by C-glycosylation followed by allylic substitution with phenols mediated by Pd(0). The aryl ethers were subjected to either [3,3]-sigmatropic rearrangement to produce 3-pyranyl-phenols or Au(III)-mediated ring contraction to create highly substituted tetrahydrofurans. [structure: see text]
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Affiliation(s)
- Adam R Yeager
- Department of Chemistry, Center for Chemical Methodology and Library Development at Boston University, Life Science and Engineering Building, Boston University, 24 Cummington Street, Boston, MA 02215, USA
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22
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Kesavan S, Su Q, Shao J, Porco JA, Panek JS. Enantioselective Synthesis of Linear Polypropionate Arrays Using Anthracene-Tagged Organosilanes. Org Lett 2005; 7:4435-8. [PMID: 16178552 DOI: 10.1021/ol0516723] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Preparation and use of anthracene-tagged organosilanes in an iterative, resin-capture-release protocol for the stereocontrolled synthesis of polypropionate arrays are described.
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Affiliation(s)
- Sarathy Kesavan
- Department of Chemistry and Center for Chemical Methodology and Library Development, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA
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