1
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Li W, Zhang Y, Wu Y, Zhu G, Liu X, Song Y, Ma B, Lin S, Ge G, Jiao X, Xie P. New bysspectin A derivatives as potent inhibitors of human carboxylesterase 2A. Eur J Med Chem 2023; 259:115708. [PMID: 37544184 DOI: 10.1016/j.ejmech.2023.115708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/25/2023] [Accepted: 08/01/2023] [Indexed: 08/08/2023]
Abstract
Human carboxylesterase 2A (hCES2A), the most abundant carboxylesterase in the human gut, plays a crucial role in the metabolic clearance and activation of various ester-bearing drugs, environmental toxins and carcinogens. Inhibition of intestinal hCES2A can alleviate irinotecan-induced gut toxicity and modulate the oral bioavailability of hCES2A-substrate drugs. Bysspectin A, a natural product isolated from the endophytic fungus Byssochlamys spectabilis, has been identified as a highly selective hCES2A inhibitor. Herein, two sets of bysspectin A derivatives have been designed and synthesized, utilizing a Cu-catalyzed domino Sonogashira-cyclization as the key step. Following two rounds of structure activity relationship (SAR) studies and structural optimizations, compound 20w was identified as the most potent hCES2A inhibitor, with an IC50 value of 1.6 nM, an approximately 1000-fold improvement over bysspectin A. Further investigation showed that 20w potently inhibited hCES2A in a mixed inhibition manner, while this agent could also potently inhibit intracellular hCES2A in living cells and exhibited suitable metabolic stability. In summary, our findings demonstrate that a new bysspectin A derivative (20w) is a promising candidate for the development of clinically used hCES2A inhibitor.
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Affiliation(s)
- Wenxuan Li
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China; Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
| | - Ya Zhang
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yuanyuan Wu
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China; Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
| | - Guanghao Zhu
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Xiaoyu Liu
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China; Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
| | - Yunqing Song
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Bo Ma
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China; Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
| | - Sheng Lin
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Guangbo Ge
- Shanghai Frontiers Science Center of TCM Chemical Biology, Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
| | - Xiaozhen Jiao
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China; Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China.
| | - Ping Xie
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China; Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
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2
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Momeni T, Zadsirjan V, Hadi Meshkatalsadat M, Pourmohammadi‐Mahunaki M. Applications of Cobalt‐Catalyzed Reactions in the Total Synthesis of Natural Products. ChemistrySelect 2022. [DOI: 10.1002/slct.202202816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Tayebeh Momeni
- Department of Chemistry Qom University of Technology Qom Iran 3718146645
- Department of Chemistry School of Science Alzahra University Vanak Tehran Iran
| | - Vahideh Zadsirjan
- Department of Chemistry Malek Ashtar University of Technology Tehran Iran
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3
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Kharitonov VB, Muratov DV, Loginov DA. Cyclopentadienyl complexes of group 9 metals in the total synthesis of natural products. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4
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Gracheva IA, Shchegravina ES, Schmalz HG, Beletskaya IP, Fedorov AY. Colchicine Alkaloids and Synthetic Analogues: Current Progress and Perspectives. J Med Chem 2020; 63:10618-10651. [PMID: 32432867 DOI: 10.1021/acs.jmedchem.0c00222] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Colchicine, the main alkaloid of Colchicum autumnale, is one of the most famous natural molecules. Although colchicine belongs to the oldest drugs (in use since 1500 BC), its pharmacological potential as a lead structure is not yet fully exploited. This review is devoted to the synthesis and structure-activity relationships (SAR) of colchicine alkaloids and their analogues with modified A, B, and C rings, as well as hybrid compounds derived from colchicinoids including prodrugs, conjugates, and delivery systems. The systematization of a vast amount of information presented to date will create a paradigm for future studies of colchicinoids for neoplastic and various other diseases.
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Affiliation(s)
- Iuliia A Gracheva
- Department of Chemistry, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603950, Russian Federation
| | - Ekaterina S Shchegravina
- Department of Chemistry, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603950, Russian Federation
| | | | - Irina P Beletskaya
- Department of Chemistry, M. V. Lomonosov Moscow State University, Moscow 119992, Russian Federation
| | - Alexey Yu Fedorov
- Department of Chemistry, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603950, Russian Federation
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5
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Fu S, Liu B. Recent progress in the synthesis of limonoids and limonoid-like natural products. Org Chem Front 2020. [DOI: 10.1039/d0qo00203h] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Recent progress in syntheses of limonoids and limonoid-like natural products is reviewed. The current “state-of-art” advance on novel synthetic strategy are summarized and future outlook will be presented.
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Affiliation(s)
- Shaomin Fu
- Key Laboratory of Green Chemistry &Technology of the Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu
- China
| | - Bo Liu
- Key Laboratory of Green Chemistry &Technology of the Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu
- China
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6
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A Garratt-Braverman cyclization route towards the synthesis of phenanthridine derivatives and their DNA-binding studies. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.02.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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7
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Chien CW, Teng YHG, Honda T, Ojima I. Synthesis of Colchicinoids and Allocolchicinoids through Rh(I)-Catalyzed [2+2+2+1] and [2+2+2] Cycloadditions of o-Phenylenetriynes with and without CO. J Org Chem 2018; 83:11623-11644. [DOI: 10.1021/acs.joc.8b01608] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chih-Wei Chien
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Yu-Han Gary Teng
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Tadashi Honda
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
- Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Iwao Ojima
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
- Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, New York 11794-3400, United States
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8
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Mitake A, Fusamae T, Kanyiva KS, Shibata T. Enantioselective Synthesis of Sulfur-Containing Medium-Ring Heterocycles with Axial Chiralities by Catalytic Intramolecular [2+2+2] Cycloaddition. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701532] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Akihito Mitake
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku 169-8555 Tokyo Japan
| | - Toru Fusamae
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku 169-8555 Tokyo Japan
| | - Kyalo Stephen Kanyiva
- International Center for Science and Engineering Programs (ICSEP), Waseda University; 3-4-1 Okubo, Shinjuku 169-8555 Tokyo Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku 169-8555 Tokyo Japan
- School of Advanced Science and Engineering; JST, ACT-C; 4-1-8 Honcho, Kawaguchi 332-0012 Saitama Japan
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9
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Albano G, Aronica LA. Potentiality and Synthesis of O- and N-Heterocycles: Pd-Catalyzed Cyclocarbonylative Sonogashira Coupling as a Valuable Route to Phthalans, Isochromans, and Isoindolines. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701041] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Gianluigi Albano
- Dipartimento di Chimica e Chimica Industriale; University of Pisa; Via G. Moruzzi 13 56124 Pisa Italy
| | - Laura Antonella Aronica
- Dipartimento di Chimica e Chimica Industriale; University of Pisa; Via G. Moruzzi 13 56124 Pisa Italy
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10
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Chaubet G, Goh SS, Mohammad M, Gockel B, Cordonnier MA, Baars H, Phillips AW, Anderson EA. Total Synthesis of the Schisandraceae Nortriterpenoid Rubriflordilactone A. Chemistry 2017; 23:14080-14089. [PMID: 28768051 PMCID: PMC5656881 DOI: 10.1002/chem.201703229] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Indexed: 01/31/2023]
Abstract
Full details of the total synthesis of the Schisandraceae nortriterpenoid natural product rubriflordilactone A are reported. Palladium- and cobalt-catalyzed polycyclizations were employed as key strategies to construct the central pentasubstituted arene from bromoendiyne and triyne precursors. This required the independent assembly of two AB ring aldehydes for combination with a common diyne component. A number of model systems were explored to investigate these two methodologies, and also to establish routes for the installation of the challenging benzopyran and butenolide rings.
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Affiliation(s)
- Guilhem Chaubet
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Shermin S. Goh
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Mujahid Mohammad
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Birgit Gockel
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | | | - Hannah Baars
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Andrew W. Phillips
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
| | - Edward A. Anderson
- Chemistry Research LaboratoryUniversity of Oxford12 Mansfield RoadOxfordOX1 3TAUK
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11
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Paymode D, Ramana CV. Total Synthesis of (±)-Allocolchicine and Its Analogues Using Co-Catalyzed Alkyne [2 + 2 + 2]-Cyclotrimerization. ACS OMEGA 2017; 2:5591-5600. [PMID: 31457824 PMCID: PMC6644368 DOI: 10.1021/acsomega.7b00980] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 08/24/2017] [Indexed: 06/10/2023]
Abstract
The total synthesis of (±)-allocolchicine has been completed by employing cobalt-catalyzed alkyne [2 + 2 + 2]-cyclotrimerization as the key reaction. The essential diyne has been synthesized from easily available 3,4,5-trimethoxybenzaldehyde following simple chemical transformations. In general, the cycloaddition gave a mixture of C(9) and C(10) isomers thus allowing the synthesis of both allocolchicine and its C(10)-carboxylate. Because this cycloaddition was employed at the penultimate stage, it allowed the synthesis of various analogues having the diverse functionality at C(9) and/or C(10) of ring C.
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Affiliation(s)
- Dinesh
J. Paymode
- Division
of Organic Chemistry, CSIR-National Chemical
Laboratory, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
- Academy
of Scientific and Innovative Research (AcSIR), New Delhi 110020, India
| | - Chepuri V. Ramana
- Division
of Organic Chemistry, CSIR-National Chemical
Laboratory, Dr. Homi Bhabha Road, Pune 411008, Maharashtra, India
- Academy
of Scientific and Innovative Research (AcSIR), New Delhi 110020, India
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12
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Rossington SB, Hadfield JA, Shnyder SD, Wallace TW, Williams KJ. Tubulin-binding dibenz[c,e]oxepines: Part 2. Structural variation and biological evaluation as tumour vasculature disrupting agents. Bioorg Med Chem 2017; 25:1630-1642. [PMID: 28143677 DOI: 10.1016/j.bmc.2017.01.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/11/2017] [Accepted: 01/17/2017] [Indexed: 02/07/2023]
Abstract
5,7-Dihydro-3,9,10,11-tetramethoxybenz[c,e]oxepin-4-ol 1, prepared from a dibenzyl ether precursor via Pd-catalysed intramolecular direct arylation, possesses broad-spectrum in vitro cytotoxicity towards various tumour cell lines, and induces vascular shutdown, necrosis and growth delay in tumour xenografts in mice at sub-toxic doses. The biological properties of 1 and related compounds can be attributed to their ability to inhibit microtubule assembly at the micromolar level, by binding reversibly to the same site of the tubulin αβ-heterodimer as colchicine 2 and the allocolchinol, N-acetylcolchinol 4.
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Affiliation(s)
- Steven B Rossington
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - John A Hadfield
- School of Environment and Life Sciences, University of Salford, Salford M5 4WT, UK
| | - Steven D Shnyder
- Institute of Cancer Therapeutics, University of Bradford, Richmond Road, Bradford BD7 1DP, UK
| | - Timothy W Wallace
- School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Kaye J Williams
- Manchester Pharmacy School, University of Manchester, Oxford Road, Manchester M13 9PT, UK
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13
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More AA, Ramana CV. Alkyne [2 + 2 + 2]-Cyclotrimerization Approach for Synthesis of 6,7-Cyclopropylallocolchicinoids. J Org Chem 2016; 81:3400-6. [DOI: 10.1021/acs.joc.6b00020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Atul A. More
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
| | - Chepuri V. Ramana
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune, Maharashtra 411008, India
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14
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Mullapudi V, Ramana CV. The Total Synthesis and Structural Assignment of Hexaketide Xylarinol B and its C1′-Epimer. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201500511] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Venkannababu Mullapudi
- Division of Organic Chemistry; CSIR - National Chemical Laboratory; Dr. Homi Bhabha Road Pune - 411 008 India
| | - Chepuri V. Ramana
- Division of Organic Chemistry; CSIR - National Chemical Laboratory; Dr. Homi Bhabha Road Pune - 411 008 India
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15
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Goh SS, Chaubet G, Gockel B, Cordonnier MCA, Baars H, Phillips AW, Anderson EA. Total Synthesis of (+)-Rubriflordilactone A. Angew Chem Int Ed Engl 2015; 54:12618-21. [PMID: 26337920 PMCID: PMC4643188 DOI: 10.1002/anie.201506366] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Indexed: 11/16/2022]
Abstract
Two enantioselective total syntheses of the nortriterpenoid natural product rubriflordilactone A are described, which use palladium- or cobalt-catalyzed cyclizations to form the CDE rings, and converge on a late-stage synthetic intermediate. These key processes are set up through the convergent coupling of a common diyne component with appropriate AB-ring aldehydes, a strategy that sets the stage for the synthetic exploration of other members of this family of natural products.
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Affiliation(s)
- Shermin S Goh
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
| | - Guilhem Chaubet
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
| | - Birgit Gockel
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
| | | | - Hannah Baars
- Institute of Organic Chemistry, RWTH Aachen UniversityLandoltweg 1, 52074 Aachen (Germany)
| | - Andrew W Phillips
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
| | - Edward A Anderson
- Chemistry Research Laboratory, University of Oxford12 Mansfield Road, Oxford, OX1 3TA (UK) E-mail:
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16
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Kotha S, Sreevani G. Molybdenum hexacarbonyl: air stable catalyst for microwave assisted intermolecular [2+2+2] co-trimerization involving propargyl halides. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.09.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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Goh SS, Chaubet G, Gockel B, Cordonnier MCA, Baars H, Phillips AW, Anderson EA. Totalsynthese von (+)-Rubriflordilacton A. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506366] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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18
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Yadav DB, Taleli L, van der Westhuyzen AE, Fernandes MA, Dragoun M, Prokop A, Schmalz HG, de Koning CB, van Otterlo WAL. Synthesis of Diverse 6-Oxa-allocolchicinoids by a Suzuki-Miyaura Coupling, Acid-Catalyzed Intramolecular Transacetalization Strategy. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500573] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Diversity-oriented approach to intricate bis-armed spirocycles involving a two directional [2+2+2] co-trimerization and the [4+2] cycloaddition reaction as key steps. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.03.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Bhattacharya P, Senapati K, Chattopadhyay K, Mandal SM, Basak A. Synthesis of benzochromenes and dihydrophenanthridines with helical motifs using Garratt–Braverman and Buchwald–Hartwig reactions. RSC Adv 2015. [DOI: 10.1039/c5ra12512j] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
X-ray structures of dihydrophenanthiridine (a) and benzochromene (b) showing greater helicity in (a).
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Affiliation(s)
| | - Kalyan Senapati
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
| | | | - Santi M. Mandal
- Central Research Facility
- Indian Institute of Technology
- Kharagpur 721302
- India
| | - Amit Basak
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur 721302
- India
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21
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Sitnikov NS, Sinzov AV, Allegro D, Barbier P, Combes S, Onambele LA, Prokop A, Schmalz HG, Fedorov AY. Synthesis of indole-derived allocolchicine congeners exhibiting pronounced anti-proliferative and apoptosis-inducing properties. MEDCHEMCOMM 2015. [DOI: 10.1039/c5md00320b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and biological assessment of indole-based allocolchicine congeners with potent anti-proliferative and apoptosis-inducing activity are reported.
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Affiliation(s)
- Nikolay S. Sitnikov
- Department of Organic Chemistry
- Lobachevsky State University of Nizhni Novgorod
- Nizhni Novgorod 603950
- Russia
- Department für Chemie
| | - Alexander V. Sinzov
- Department of Organic Chemistry
- Lobachevsky State University of Nizhni Novgorod
- Nizhni Novgorod 603950
- Russia
| | | | | | - Sebastien Combes
- Laboratory of Integrative Structural and Chemical Biology, Institut Paoli-Calmettes
- Aix-Marseille Université
- Marseille
- France
| | | | - Aram Prokop
- Department of Pediatric Hematology/Oncology
- 50735 Köln
- Germany
| | | | - Alexey Yu. Fedorov
- Department of Organic Chemistry
- Lobachevsky State University of Nizhni Novgorod
- Nizhni Novgorod 603950
- Russia
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22
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Moni L, Denissen M, Valentini G, Müller TJJ, Riva R. Diversity-oriented synthesis of intensively blue emissive 3-hydroxyisoquinolines by sequential Ugi four-component reaction/reductive Heck cyclization. Chemistry 2014; 21:753-62. [PMID: 25369792 DOI: 10.1002/chem.201404209] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Indexed: 11/09/2022]
Abstract
A convergent approach to highly functionalized 3-hydroxyisoquinolines is reported. The key steps are an Ugi multicomponent reaction and a subsequent intramolecular reductive Heck reaction; these can also be performed as a one-pot procedure. The structures display very interesting properties as blue-fluorescence emitters. Photophysical studies on the absorption and static fluorescence indicate that the substitution pattern on the pyridyl part influences the optical properties only to a minor extent, unless the amide substituent becomes sterically demanding and leads to significant nonradiative deactivation. The donor substitution on the benzo core considerably enhances the fluorescence quantum yields and trimethoxy substitution causes a pronounced redshift of the emission bands. Protonation of the isoquinolyl nitrogen atom causes efficient static quenching of the fluorescence.
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Affiliation(s)
- Lisa Moni
- Dipartimento di Chimica e Chimica Industriale, University of Genova, Via Dodecaneso 31, 16146 Genova (Italy)
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23
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Karmakar R, Pahari P, Mal D. Phthalides and Phthalans: Synthetic Methodologies and Their Applications in the Total Synthesis. Chem Rev 2014; 114:6213-84. [DOI: 10.1021/cr400524q] [Citation(s) in RCA: 249] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Raju Karmakar
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
- Technical University of Braunschweig, 38106 Braunschweig, Germany
| | - Pallab Pahari
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
- Synthetic
Organic Chemistry Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, Assam, India
| | - Dipakranjan Mal
- Department
of Chemistry, Indian Institute of Technology, Kharagpur 721302, India
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24
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More AA, Ramana CV. Total synthesis of the putative structure of xylarinol B. Chem Asian J 2014; 9:1557-62. [PMID: 24678029 DOI: 10.1002/asia.201301647] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 01/31/2014] [Indexed: 01/18/2023]
Abstract
The total synthesis of the putative structure of xylarinol B is described and the need to revise its structure is demonstrated. The central benzoxepine skeleton was constructed by employing a cobalt-mediated bimolecular [2+2+2] Reppe-Vollhardt alkyne cycloaddition reaction.
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Affiliation(s)
- Atul A More
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune - 411 008 (India), Fax: (+91) 20-25902629
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25
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Zhang L, Li Y, Zhang L, Wu Y. Vicinal bis(trifluoroacetimidoyl chloride)s: novel building blocks for the synthesis of benzo-fused eight-membered rings via [2 + 2 + 2] cycloadditions. Org Biomol Chem 2014; 12:1040-3. [DOI: 10.1039/c3ob42224k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Yuan W, Wei Y, Shi M. Ruthenium-catalyzed intramolecular [2+2+2] cycloaddition and tandem cross-metathesis of triynes and enediynes. ChemistryOpen 2013; 2:63-8. [PMID: 24551536 PMCID: PMC3646433 DOI: 10.1002/open.201300002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Indexed: 11/09/2022] Open
Abstract
[2+2+2] Cycloadditions can be applied to specifically build up derivatives of benzene and cyclohexadiene and, therefore, have attracted much attention. Herein, we present an intramolecular [2+2+2] cycloaddition of triynes catalyzed by the first-generation Grubbs ruthenium complex (Ru gen-1), which can efficiently afford benzene derivatives in good yields under mild conditions. Moreover, we also report on a novel tandem cross-metathesis transformation of intramolecular enediynes also catalyzed by Ru gen-1, which has not been observed previously in related reports. On the basis of deuterium labeling experiments, a possible reaction mechanism is presented.
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Affiliation(s)
- Wei Yuan
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 354 Fenglin Lu, Shanghai 200032 (P. R. China) E-mail:
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 354 Fenglin Lu, Shanghai 200032 (P. R. China) E-mail:
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 354 Fenglin Lu, Shanghai 200032 (P. R. China) E-mail:
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27
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Rodrigo SK, Powell IV, Coleman MG, Krause JA, Guan H. Efficient and regioselective nickel-catalyzed [2 + 2 + 2] cyclotrimerization of ynoates and related alkynes. Org Biomol Chem 2013; 11:7653-7. [DOI: 10.1039/c3ob41872c] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Thiel I, Jiao H, Spannenberg A, Hapke M. Fine-tuning the reactivity and stability by systematic ligand variations in CpCo(I) complexes as catalysts for [2+2+2] cycloaddition reactions. Chemistry 2012; 19:2548-54. [PMID: 23255505 DOI: 10.1002/chem.201202946] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2012] [Indexed: 11/08/2022]
Abstract
CpCo(I)-olefin-phosphite and CpCo(I)-bisphosphite complexes were systematically prepared and their reactivity in [2+2+2] cycloaddition reactions compared with highly active [CpCo(H(2)C=CHSiMe(3))(2)] (1). Whereas 1 is an excellent precursor for the synthesis of [CpCo(olefin)(phosphite)] complexes (2 a-f), [CpCo(phosphite)(2)] complexes (3 a-e) were prepared photochemically from [CpCo(cod)]. The complexes were evaluated in the cyclotrimerization reaction of diynes with nitriles yielding pyridines. For [CpCo(olefin)(phosphite)], as well as some of the [CpCo(phosphite)(2)] complexes, reaction temperatures as low as 50 °C were sufficient to perform the cycloaddition reaction. A direct comparison showed that the order of reactivity for the complex ligands was olefin(2)>olefin/phosphite>phosphites(2). The complexes with mixed ligands favorably combine reactivity and stability. Calculations on the ligand dissociation from [CpCo(olefin)(phosphite)] proved that the phosphite is dissociating before the olefin. [CpCo(H(2)C=CHSiMe(3)){P(OPh)(3)}] (2 a) was investigated for the co-cyclization of diynes and nitriles and found to be an efficient catalyst at rather mild temperatures.
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Affiliation(s)
- Indre Thiel
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
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29
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Goh SS, Baars H, Gockel B, Anderson EA. Metal-Catalyzed Syntheses of Abridged CDE Rings of Rubriflordilactones A and B. Org Lett 2012; 14:6278-81. [DOI: 10.1021/ol303041j] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Shermin S. Goh
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, U.K., and Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Hannah Baars
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, U.K., and Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Birgit Gockel
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, U.K., and Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | - Edward A. Anderson
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, U.K., and Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
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30
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Fischer F, Jungk P, Weding N, Spannenberg A, Ott H, Hapke M. Diastereomeric Atropisomers from a Chiral Diyne by Cobalt(I)-Catalyzed Cyclotrimerization. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200402] [Citation(s) in RCA: 15] [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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31
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Termath AO, Ritter S, König M, Kranz DP, Neudörfl JM, Prokop A, Schmalz HG. Synthesis of Oxa-B-Ring Analogs of Colchicine through Rh-Catalyzed Intramolecular [5+2] Cycloaddition. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200677] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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32
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Hadad C, Garcı́a-Martı́nez JC, Rodrı́guez-López J. Layer-Block Dendrimers with Alternating Thienylenevinylene and Phenylenevinylene Units. J Org Chem 2012; 77:6223-30. [DOI: 10.1021/jo301054w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Caroline Hadad
- Facultad
de Ciencias y Tecnologías Quı́micas, Universidad de Castilla-La Mancha, 13071
Ciudad Real, Spain
| | | | - Julián Rodrı́guez-López
- Facultad
de Ciencias y Tecnologías Quı́micas, Universidad de Castilla-La Mancha, 13071
Ciudad Real, Spain
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33
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Zilke L, Hall DG. Synthetic Studies Towards the Core Tricyclic Ring System of Pradimicin A. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200294] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Tummatorn J, Batsomboon P, Clark RJ, Alabugin IV, Dudley GB. Strain-promoted azide-alkyne cycloadditions of benzocyclononynes. J Org Chem 2012; 77:2093-7. [PMID: 22316100 DOI: 10.1021/jo300188y] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Preliminary studies related to the design and development of new cycloalkyne reagents for metal-free click coupling are reported. Cyclononynes are more stable than cyclooctynes, and the robust benzocyclononyne platform offers spontaneous reactivity toward azides at rates competitive with other azidophiles that have been employed for metal-free click coupling. Benzocyclononynes (e.g., 1) provide valuable insight into the design of new cycloalkynes for strain-promoted azide-alkyne cycloaddition (SPAAC) couplings for applications in which side reactions and decomposition of the reagent must be kept to a minimum.
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Affiliation(s)
- Jumreang Tummatorn
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390, USA
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35
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36
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37
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Smith JA, Molesworth PP, Hyland CJ, Ryan JH. Seven-Membered Rings. PROGRESS IN HETEROCYCLIC CHEMISTRY 2011. [DOI: 10.1016/s0959-6380(11)22016-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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38
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Wu CY, Lin YC, Chou PT, Wang Y, Liu YH. One-pot synthesis of substituted benzene via intermolecular [2+2+2] cycloaddition catalyzed by air-stable Ru(ii)-complex. Dalton Trans 2011; 40:3748-53. [DOI: 10.1039/c0dt01502d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Edwards DJ, Hadfield JA, Wallace TW, Ducki S. Tubulin-binding dibenz[c,e]oxepines as colchinol analogues for targeting tumour vasculature. Org Biomol Chem 2011; 9:219-31. [DOI: 10.1039/c0ob00500b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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40
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Domínguez G, Pérez-Castells J. Recent advances in [2+2+2] cycloaddition reactions. Chem Soc Rev 2011; 40:3430-44. [DOI: 10.1039/c1cs15029d] [Citation(s) in RCA: 467] [Impact Index Per Article: 35.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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[2+2+2] cycloaddition reactions of macrocyclic systems catalyzed by transition metals. A review. Molecules 2010; 15:9230-51. [PMID: 21160451 PMCID: PMC6259275 DOI: 10.3390/molecules15129230] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Revised: 12/10/2010] [Accepted: 12/14/2010] [Indexed: 11/17/2022] Open
Abstract
Polyalkyne and enediyne azamacrocycles are prepared from arenesulfonamides and various alkyne and alkene derivatives either under basic or neutral conditions. The new family of macrocyclic substrates is tested in the [2+2+2] cycloaddition reaction. Several catalysts are used for the cycloisomerization reaction, and their enantioinduction is evaluated as appropriate. The effect of the structural features of the macrocycles, namely the ring size, substituents in precise positions and the number and type of unsaturations, on the [2+2+2] cycloaddition reaction has also been studied.
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42
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Kesenheimer C, Kalogerakis A, Meissner A, Groth U. The cobalt way to angucyclinones: asymmetric total synthesis of the antibiotics (+)-rubiginone B2, (-)-tetrangomycin, and (-)-8-O-methyltetrangomycin. Chemistry 2010; 16:8805-21. [PMID: 20575121 DOI: 10.1002/chem.201000804] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A cobalt(I)-mediated convergent and asymmetric total synthesis of angucyclinones with an aromatic B ring has been developed. In the course of our research, we synthesized three naturally occurring anguclinone derivatives, namely, (+)-rubiginone B(2) (1), (-)-8-O-methyltetrangomycin (2), and (-)-tetrangomycin (3). By combining 3-hydroxybenzoic acid, 3-methoxybenzoic acid, citronellal, and geraniol as starting materials in a convergent way, we were able to synthesize chiral triyne chains, which were cyclized with [CpCo(C(2)H(4))(2)] (Cp=cyclopentadienyl) by means of an intramolecular [2+2+2] cycloaddition to their corresponding tetrahydrobenzo[a]anthracenes. Successive oxidation and deprotection steps led to the above-mentioned natural products 1-3.
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Affiliation(s)
- Christian Kesenheimer
- Fachbereich Chemie and Konstanz Research School Chemical Biology, Universität Konstanz, Universitätsstrasse 10, Postfach 720, 78457 Konstanz, Germany
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43
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Tamura S, Doke S, Murakami N. Total synthesis of peumusolide A, NES non-antagonistic inhibitor for nuclear export of MEK. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.08.025] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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Dallinger D, Irfan M, Suljanovic A, Kappe CO. An Investigation of Wall Effects in Microwave-Assisted Ring-Closing Metathesis and Cyclotrimerization Reactions. J Org Chem 2010; 75:5278-88. [DOI: 10.1021/jo1011703] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Doris Dallinger
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC) and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria
| | - Muhammed Irfan
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC) and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria
| | - Amra Suljanovic
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC) and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria
| | - C. Oliver Kappe
- Christian Doppler Laboratory for Microwave Chemistry (CDLMC) and Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria
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45
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Garcia L, Pla-Quintana A, Roglans A, Parella T. Microwave-Enhanced Rhodium-Catalyzed [2+2+2] Cycloaddition Reactions To Afford Highly Functionalized Pyridines and Bipyridines. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901318] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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46
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Boyer FD, Dubois J, Thoret S, Dau METH, Hanna I. Synthesis and tubulin-binding properties of new allocolchicinoids. Bioorg Chem 2010; 38:149-58. [PMID: 20359734 DOI: 10.1016/j.bioorg.2010.03.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2010] [Revised: 03/09/2010] [Accepted: 03/10/2010] [Indexed: 10/19/2022]
Abstract
Allocolchicinoids with B- and C-ring variations were synthesized using sequential enyne-metathesis/ Diels-Alder reactions (A-->AB-->ABC approach) and evaluated for their inhibitory effect on tubulin assembly in vitro. (-)-Allocolchicine 11 with methyl ester at C10 and (+/-)-cyclopropyl allocolchicinoid 32 exhibit similar activity than (-)-colchicine (1), probably derived from a similar flexibility in the biphenyl system. The presence of methyl ester at C10 led to a little loss in potency in comparison with the series with methyl ester at C9. A complete loss of activity was observed for allocolchicine 9 with methyl ester at C11.
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Affiliation(s)
- François-Didier Boyer
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, 1 avenue de la Terrasse, F-91198 Gif-sur-Yvette Cedex, France.
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47
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Nicolaus N, Zapke J, Riesterer P, Neudörfl JM, Prokop A, Oschkinat H, Schmalz HG. Azides Derived from Colchicine and their Use in Library Synthesis: a Practical Entry to New Bioactive Derivatives of an Old Natural Drug. ChemMedChem 2010; 5:661-5. [DOI: 10.1002/cmdc.201000063] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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48
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Basavaiah D, Aravindu K, Kumar KS, Reddy KR. Simple, One-Pot, and Facile Synthesis of Angularly Fused [6-7-5], [6-7-6], [6-7-7], and [6,7] Ring Systems Using Baylis-Hillman Acetates. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901483] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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49
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Schmalz HG, Nicolaus N, Reball J, Sitnikov N, Yu. Fedorov A, Velder J, Termath A. A Convenient Entry to New C-7-Modified Colchicinoids through Azide Alkyne [3+2] Cycloaddition: Application of Ring-Contractive Rearrangements. HETEROCYCLES 2010. [DOI: 10.3987/com-10-s(e)117] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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50
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Colombel V, Baudoin O. Synthetic Approaches to Amino Analogues of N-Acetylcolchinol. J Org Chem 2009; 74:4329-35. [DOI: 10.1021/jo900632a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Virginie Colombel
- Université Lyon 1, CNRS UMR5246, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
| | - Olivier Baudoin
- Université Lyon 1, CNRS UMR5246, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
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