1
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Goel B, Dey B, Chatterjee E, Tripathi N, Bhardwaj N, Kumar S, Guru SK, Jain SK. Antiproliferative Potential of Gloriosine: A Lead for Anticancer Drug Development. ACS OMEGA 2022; 7:28994-29001. [PMID: 36033689 PMCID: PMC9404168 DOI: 10.1021/acsomega.2c02688] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
Gloriosine, a colchicine-like natural product, is widely obtained from Gloriosa superba roots. Despite having remarkable anticancer potential, colchicine could not pave its way to the clinic, while gloriosine is yet to be investigated for its pharmacological effects. In the present work, 14 compounds, including gloriosine, were isolated from the G. superba roots and were characterized by NMR spectroscopy. Gloriosine (11) was evaluated for its antiproliferative activity against a panel of 15 human cancer cell lines of different tissues and normal breast cells. Gloroisine (11) displayed significant antiproliferative activity against various cancer cell lines selectively, with IC50 values ranging from 32.61 to 100.28 nM. Further, gloriosine (11) was investigated for its apoptosis-inducing ability and found to form apoptotic bodies. It also inhibited A549 cell migration in the wound healing assay. Finally, molecular docking studies were performed to explore the possible binding modes of gloriosine with the colchicine-binding site of tubulin protein. Our findings suggested that gloriosine might be a potential lead for anticancer drug discovery.
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Affiliation(s)
- Bharat Goel
- Department
of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, Uttar Pradesh, India
| | - Biswajit Dey
- Department
of Biological Sciences, National Institute
of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, Telangana, India
| | - Essha Chatterjee
- Department
of Biological Sciences, National Institute
of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, Telangana, India
| | - Nancy Tripathi
- Department
of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, Uttar Pradesh, India
| | - Nivedita Bhardwaj
- Department
of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, Uttar Pradesh, India
| | - Sanjay Kumar
- Department
of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, Uttar Pradesh, India
| | - Santosh Kumar Guru
- Department
of Biological Sciences, National Institute
of Pharmaceutical Education and Research (NIPER), Hyderabad 500037, Telangana, India
| | - Shreyans K. Jain
- Department
of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, Uttar Pradesh, India
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2
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Cirillo D, Karlsson S, Bjørsvik H. A Scalable High‐Yielding and Selective Oxidative Heck Cross‐Coupling – A Key Step for the Synthesis of
trans‐
Stilbenes. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Davide Cirillo
- Department of Chemistry University of Bergen Allégaten 41 5007 Bergen Norway
| | - Staffan Karlsson
- Chemical Development Pharmaceutical Sciences Biopharmaceuticals R&D AstraZeneca Pepparedsleden 1 43150 Mölndal Sweden
| | - Hans‐René Bjørsvik
- Department of Chemistry University of Bergen Allégaten 41 5007 Bergen Norway
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3
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Ochora DO, Kakudidi E, Namukobe J, Heydenreich M, Coghi P, Yang LJ, Mwakio EW, Andagalu B, Roth A, Akala HM, Wong VKW, Yenesew A. A new benzophenone, and the antiplasmodial activities of the constituents of Securidaca longipedunculata fresen (Polygalaceae). Nat Prod Res 2021; 36:2758-2766. [PMID: 34000936 DOI: 10.1080/14786419.2021.1925272] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Extracts from Securidaca longipedunculata showed antiplasmodial activities against reference clones and clinical isolates using SYBR Green I method. A new benzophenone, 2,3,4,5-tetramethoxybenzophenone (1) was isolated and characterized along with seven known compounds: 4-hydroxy-2,3-dimethoxybenzophenone (2); 3-hydroxy-5-methoxybiphenyl (3), methyl-2-hydroxy-6-methoxybenzoate (4), benzyl-2-hydroxy-6-methoxybenzoate (5), 2-hydroxy-6-methoxybenzoic acid (6), 2,4,5-trimethoxybenzophenone (7) and 2-methoxy-3,4-methylenedioxybenzophenone (8). Compounds 1 and 2 showed ex vivo antiplasmodial activities (IC50 28.8 μM and 18.6 μM, respectively); while 5 and 8 showed in vivo activities (IC50 19.7 μM and 14.5 μM, respectively) against D6 strain. In a cytotoxicity assay, all the extracts (with an exception of the MeOH extract of the leaves) and pure compounds were not toxic to the normal LO2 and BEAS cell-lines, while the methanol roots extract (IC50 66.4 µg/mL against A549, and 77.4 µg/mL against HepG2), compounds 6 (IC50 22.2 µM against A549) and 7 (IC50 45.2 µM against HepG2) were weakly active against cancerous cell-lines.
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Affiliation(s)
- Douglas O Ochora
- Department of Plant Sciences, Microbiology & Biotechnology, College of Natural Sciences, Makerere University, Kampala, Uganda
| | - Esezah Kakudidi
- Department of Plant Sciences, Microbiology & Biotechnology, College of Natural Sciences, Makerere University, Kampala, Uganda
| | - Jane Namukobe
- Department of Chemistry, College of Natural Sciences, Makerere University, Kampala, Uganda
| | | | - Paolo Coghi
- School of Pharmacy, Macau University of Science and Technology, Macau, China
| | - Li Jun Yang
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Edwin W Mwakio
- United States Army Medical Research Unit-Kenya (USAMRU-K), Kenya Medical Research Institute (KEMRI)-Walter Reed Project, Kisumu, Kenya
| | - Ben Andagalu
- United States Army Medical Research Unit-Kenya (USAMRU-K), Kenya Medical Research Institute (KEMRI)-Walter Reed Project, Kisumu, Kenya
| | - Amanda Roth
- United States Army Medical Research Unit-Kenya (USAMRU-K), Kenya Medical Research Institute (KEMRI)-Walter Reed Project, Kisumu, Kenya
| | - Hoseah M Akala
- United States Army Medical Research Unit-Kenya (USAMRU-K), Kenya Medical Research Institute (KEMRI)-Walter Reed Project, Kisumu, Kenya
| | - Vincent K W Wong
- Dr. Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, China
| | - Abiy Yenesew
- Department of Chemistry, University of Nairobi, Nairobi, Kenya
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4
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Pradhan TR, Mohapatra DK. A synthetic study toward the core structure of (-)-apicularen A. Org Biomol Chem 2018; 16:8810-8818. [PMID: 30403225 DOI: 10.1039/c8ob02301h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A concise synthetic strategy towards the core structure of (-)-apicularen A has been described in an 11-step synthetic sequence from a known intermediate. The key steps include tandem isomerization followed by C-O and C-C bond-forming reactions and iodocyclization strategies for the synthesis of a bicyclic ether embedded in the macrolactone ring. The applied reagent-controlled Keck-Maruoka allylation, Lin Pu alkynylation and Ricket-Diels-Alder reactions were used to simplify the synthetic sequence of related natural products. An intramolecular Yamaguchi lactonization constructed the macrolactone core, while the attempt to install the C11 hydroxyl chiral centre either under catalytic hydrogenation conditions or oxidative conditions was not successful.
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Affiliation(s)
- Tapas R Pradhan
- Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad-500007, India.
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5
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Divergent syntheses of L-733, 060 and CP-122721 from functionalized pieridinones made by one-pot tandem cyclization. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.02.057] [Citation(s) in RCA: 11] [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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6
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Yadav JS, Amrutapu SK, Pabbaraja S. Studies Towards the Synthesis of Stereoisomer of Acremolide B. ChemistrySelect 2017. [DOI: 10.1002/slct.201700007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jhillu S. Yadav
- Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan; 2 Rafi Marg New Delhi 110001 India
- Division of Natural Products Chemistry; CSIR - Indian Institute of Chemical Technology; Hyderabad 500007 India
| | - Sravanth Kumar Amrutapu
- Academy of Scientific and Innovative Research (AcSIR), Anusandhan Bhawan; 2 Rafi Marg New Delhi 110001 India
- Division of Natural Products Chemistry; CSIR - Indian Institute of Chemical Technology; Hyderabad 500007 India
| | - Srihari Pabbaraja
- Division of Natural Products Chemistry; CSIR - Indian Institute of Chemical Technology; Hyderabad 500007 India
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7
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Ehrlich G, Stark CBW. Total Synthesis of Cytospolide D and Its Biomimetic Conversion to Cytospolides M, O, and Q. Org Lett 2016; 18:4802-4805. [PMID: 27636302 DOI: 10.1021/acs.orglett.6b02193] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A total synthesis of cytospolide D, starting from l-glutamic acid, is described. The critical macrolactonization to the 10-membered lactone containing an (E)-configured double bond was successfully achieved by Shiina esterification. Conversion of cytospolide D to its bicyclic derivatives M, O, and Q was accomplished under mild conditions, lending support to the proposed biosynthetic hypothesis.
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Affiliation(s)
- Gunnar Ehrlich
- Department of Chemistry, Institute of Organic Chemistry, University of Hamburg , Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
| | - Christian B W Stark
- Department of Chemistry, Institute of Organic Chemistry, University of Hamburg , Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
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8
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Faiz S, Zahoor AF. Ring opening of epoxides with C-nucleophiles. Mol Divers 2016; 20:969-987. [PMID: 27376747 DOI: 10.1007/s11030-016-9686-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 06/19/2016] [Indexed: 11/26/2022]
Abstract
Ring opening of epoxides has been an area of interest for organic chemists, owing to their reactivity toward nucleophiles. Such reactions yield important products depending on the type of nucleophiles used. This review article covers the synthetic approaches (1991-2015) used for the ring opening of epoxides via carbon nucleophiles.
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Affiliation(s)
- Sadia Faiz
- Department of Chemistry, Government College University Faisalabad, Faisalabad, 38000, Pakistan
| | - Ameer Fawad Zahoor
- Department of Chemistry, Government College University Faisalabad, Faisalabad, 38000, Pakistan.
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9
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Kubota M, Saito T, Miyamoto K, Hirano K, Wang C, Uchiyama M. Gold-Catalyzed Cyclization of Alkyne Alcohols: Regioselective Construction of Functionalized 6,6- and 6,7-Bicyclic Ethers. Chem Pharm Bull (Tokyo) 2016; 64:845-55. [PMID: 27373641 DOI: 10.1248/cpb.c16-00204] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Mio Kubota
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
| | - Tatsuo Saito
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
| | | | - Keiichi Hirano
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
| | - Chao Wang
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
- Advanced Elements Chemistry Research Team, RIKEN Center for Sustainable Resource Science, and Elements Chemistry Laboratory, RIKEN
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo
- Advanced Elements Chemistry Research Team, RIKEN Center for Sustainable Resource Science, and Elements Chemistry Laboratory, RIKEN
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10
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11
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Stereoselective total synthesis of cananginones (D–I) using Ireland–Claisen rearrangement as a key step. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.03.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Yadav JS, Reddy PAN, Reddy YJ, Meraj S, Prasad AR. Stereoselective Total Synthesis of Attenols A and B. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300623] [Citation(s) in RCA: 13] [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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13
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Slocum DW, Reinscheld TK, White CB, Timmons MD, Shelton PA, Slocum MG, Sandlin RD, Holland EG, Kusmic D, Jennings JA, Tekin KC, Nguyen Q, Bush SJ, Keller JM, Whitley PE. ortho-Lithiations Reassessed: the Advantages of Deficiency Catalysis in Hydrocarbon Media. Organometallics 2013. [DOI: 10.1021/om301120e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- D. W. Slocum
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
| | - Thomas K. Reinscheld
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
| | - Christopher B. White
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
| | - Michael D. Timmons
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
| | - Philip A. Shelton
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
| | - Matthew G. Slocum
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
| | - Rebecca D. Sandlin
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
| | - Erica G. Holland
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
| | - Damir Kusmic
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
| | - John A. Jennings
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
| | - Kristen C. Tekin
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
| | - Quang Nguyen
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
| | - Steven J. Bush
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
| | - Julia M. Keller
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
| | - Paul E. Whitley
- Department of Chemistry, Western Kentucky University, 1906 College Heights Boulevard,
Bowling Green, Kentucky 42101, United States
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14
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Iwasaki T, Higashikawa K, Reddy VP, Ho WWS, Fujimoto Y, Fukase K, Terao J, Kuniyasu H, Kambe N. NickelButadiene Catalytic System for the Cross-Coupling of Bromoalkanoic Acids with Alkyl Grignard Reagents: A Practical and Versatile Method for Preparing Fatty Acids. Chemistry 2013; 19:2956-60. [DOI: 10.1002/chem.201204222] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Indexed: 11/08/2022]
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15
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Parenty A, Moreau X, Niel G, Campagne JM. Update 1 of: Macrolactonizations in the Total Synthesis of Natural Products. Chem Rev 2013; 113:PR1-40. [DOI: 10.1021/cr300129n] [Citation(s) in RCA: 148] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- A. Parenty
- Institut de Chimie des Substances
Naturelles, Avenue de la Terrasse, F-91198 Gif sur Yvette, France
| | - X. Moreau
- Institut de Chimie des Substances
Naturelles, Avenue de la Terrasse, F-91198 Gif sur Yvette, France
- Institut Lavoisier de Versailles, UMR CNRS 8180, Université de Versailles-Saint-Quentin-en-Yvelines, 45 Avenue des Etats-Unis, 78035 Versailles Cedex, France
| | - Gilles Niel
- Institut Charles Gerhardt, UMR5253, Ecole Nationale Supérieure de Chimie, 8 rue de l’Ecole Normale, F-34296 Montpellier, France
| | - J.-M. Campagne
- Institut de Chimie des Substances
Naturelles, Avenue de la Terrasse, F-91198 Gif sur Yvette, France
- Institut Charles Gerhardt, UMR5253, Ecole Nationale Supérieure de Chimie, 8 rue de l’Ecole Normale, F-34296 Montpellier, France
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16
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Han X, Floreancig PE. Synthesis of bridged inside-outside bicyclic ethers through oxidative transannular cyclization reactions. Org Lett 2012; 14:3808-11. [PMID: 22783950 DOI: 10.1021/ol301720u] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The classical geometry of the 6-endo transition state for nucleophilic additions into oxocarbenium ions can be perturbed by incorporating the reactive groups into medium-sized rings, leading to the formation of 2,6-trans-dialkyl tetrahydropyrans. The bicyclic products exhibit inside-outside stereoisomerism, as seen in numerous macrolide natural products.
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Affiliation(s)
- Xun Han
- Department of Chemistry, University of Pittsburgh , Pittsburgh, Pennsylvania 15260, United States
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17
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Bassan EM, Baxter CA, Beutner GL, Emerson KM, Fleitz FJ, Johnson S, Keen S, Kim MM, Kuethe JT, Leonard WR, Mullens PR, Muzzio DJ, Roberge C, Yasuda N. Multikilogram-Scale Synthesis of a Chiral Cyclopropanol and an Investigation of the Safe Use of Lithium Acetylide–Ethylene Diamine Complex. Org Process Res Dev 2011. [DOI: 10.1021/op2002497] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Carl A. Baxter
- Global Process Chemistry, Merck, Sharp and Dohme Ltd., Hertford Road, Hoddesdon, EN11 9BU, U.K
| | | | | | | | - Simon Johnson
- Global Process Chemistry, Merck, Sharp and Dohme Ltd., Hertford Road, Hoddesdon, EN11 9BU, U.K
| | - Stephen Keen
- Global Process Chemistry, Merck, Sharp and Dohme Ltd., Hertford Road, Hoddesdon, EN11 9BU, U.K
| | | | | | | | - Peter R. Mullens
- Global Process Chemistry, Merck, Sharp and Dohme Ltd., Hertford Road, Hoddesdon, EN11 9BU, U.K
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18
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Palimkar SS, Uenishi J, Ii H. Total Synthesis and Biological Evaluation of (−)-Apicularen A and Its Analogues. J Org Chem 2011; 77:388-99. [DOI: 10.1021/jo2019762] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sanjay S. Palimkar
- Kyoto Pharmaceutical University, Misasagi, Yamashina, Kyoto 607-8412, Japan
| | - Jun’ichi Uenishi
- Kyoto Pharmaceutical University, Misasagi, Yamashina, Kyoto 607-8412, Japan
| | - Hiromi Ii
- Kyoto Pharmaceutical University, Misasagi, Yamashina, Kyoto 607-8412, Japan
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19
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Wang Y, Xing Y, Zhang Q, O'Doherty GA. De novo synthesis of natural products via the asymmetric hydration of polyenes. Chem Commun (Camb) 2011; 47:8493-505. [PMID: 21559534 PMCID: PMC5815319 DOI: 10.1039/c1cc11791b] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
For the last ten years our group has been working toward the development of an asymmetric hydration approach to polyketide natural products based on the regioselective hydration of di- and tri-enoates. Key to the success of this approach is the recognition that both high regiocontrol and asymmetric induction could be obtained by the use of a Sharpless asymmetric dihydroxylation reaction. Herein we describe the development of the method and its application to natural product total synthesis.
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Affiliation(s)
- Yanping Wang
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts, USA
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20
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Hilli F, White JM, Rizzacasa MA. Formal total synthesis of the myxobacteria metabolite apicularen A via a transannular oxy-Michael addition. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.04.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Affiliation(s)
- Sanjay S. Palimkar
- Kyoto Pharmaceutical University, Misasagi Yamashina, Kyoto 607-8412, Japan
| | - Jun’ichi Uenishi
- Kyoto Pharmaceutical University, Misasagi Yamashina, Kyoto 607-8412, Japan
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22
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Hiebel MA, Pelotier B, Goekjian P, Piva O. 2,6-Disubstituted Tetrahydropyrans by Tandem Cross-Metathesis/Iodocyclisation. European J Org Chem 2008. [DOI: 10.1002/ejoc.200700902] [Citation(s) in RCA: 15] [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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23
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Kimura T, Hagiwara M, Nakata T. SmI2-induced reductive cyclization of optically active β-alkoxyvinyl sulfoxides with aldehyde. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.10.102] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Li M, O'Doherty GA. De novo formal synthesis of (-)-apicularen A via an iterative asymmetric hydration sequence. Org Lett 2007; 8:6087-90. [PMID: 17165936 PMCID: PMC2529256 DOI: 10.1021/ol062595u] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[Structure: see text] A de novo approach to the formal total synthesis of the macrolide natural product (-)-apicularen A has been achieved in 18 steps from achiral starting materials. Both the absolute and relative stereochemistries of apicularen A were introduced by a Sharpless asymmetric dihydroxylation, a pi-allyl-palladium catalyzed reduction, a stereoselective reduction, and a base-promoted transannulation to install the C-9 stereocenter.
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Affiliation(s)
- Miaosheng Li
- Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, USA
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25
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Jundt L, Höfle G. Side-chain truncation of apicularen A by olefin cross-metathesis with ethylene. JOURNAL OF NATURAL PRODUCTS 2007; 70:1377-9. [PMID: 17691744 DOI: 10.1021/np070098w] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The three olefinic double bonds of natural apicularen A (1a) were cleaved by olefin cross-metathesis in the presence of ethylene and Hoveyda-Grubbs catalyst with concomitant E/Z isomerization of Delta(17,18). On extended conversion, 18,19-seco-apicularen A (3) was accumulated and isolated in pure state in 25% yield. In total synthesis, 3 is a valuable late-stage intermediate for side-chain-modified apicularens.
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Affiliation(s)
- Larissa Jundt
- Helmholtz Center for Infection Research (previously GBF, Gesellschaft für Biotechnologische Forschung), Inhoffen Strasse 7, 38124 Braunschweig, Germany
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26
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Shinkevich EY, Novikov MS, Khlebnikov AF, Kostikov RR, Kopf J, Magull J. New type of transannular reactions in azirine-fused medium-size heterocycles: Selective transformations of azirino[2,1-e][1,6]benzoxazocines and -benzothiazocines into oxa(thia)zine and oxa(thia)zole derivatives. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2007. [DOI: 10.1134/s1070428007070214] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Jung YH, Kim YJ, Lee J, Tae J. Formal Total Synthesis of (−)-Apicularen A by a Strategy Based on Ring-Closing Metathesis and Transannular Cyclization. Chem Asian J 2007; 2:656-61. [PMID: 17465410 DOI: 10.1002/asia.200700024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A formal synthesis of (-)-apicularen A, a potent antitumor agent with unique biological properties, has been completed in a 15-step sequence starting from a known, enantiomerically pure hydroxyepoxide, which was generated by using the Jacobsen hydrolytic-kinetic-resolution methodology. The 12-membered macrocyclic lactone in the target was constructed by ring-closing metathesis, and the trans-tetrahydropyran ring system was created through the transannular etherification of a hydroxyalkene.
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Affiliation(s)
- Young-Hee Jung
- Department of Chemistry and Center for Bioactive Molecular Hybrids, Institute for NanoBio Molecular Assemblies (BK21), Yonsei University, Seoul 120-749, Korea
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28
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Unelius CR, Nordlander G, Nordenhem H, Hellqvist C, Legrand S, Borg-Karlson AK. Structure-activity relationships of benzoic acid derivatives as antifeedants for the pine weevil, Hylobius abietis. J Chem Ecol 2007; 32:2191-203. [PMID: 17013662 DOI: 10.1007/s10886-006-9139-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Aromatic organic compounds found in the feces of the pine weevil, Hylobius abietis (L.) (Coleoptera: Curculionidae), have been shown to deter feeding behavior in this species, which is a serious pest of planted conifer seedlings in Europe. We evaluated 55 benzoic acid derivatives and a few homologs as antifeedants for H. abietis. Structure-activity relationships were identified by bioassaying related compounds obtained by rational syntheses of functional group analogs and structural isomers. We identified five main criteria of efficiency as antifeedants among the benzoic acid derivatives. By predicting optimal structures for H. abietis antifeedants, we attempted to find a commercial antifeedant to protect conifer seedlings against damage by H. abietis in regenerating forests. New, highly effective antifeedants are methyl 2,4-dimethoxybenzoate, isopropyl 2,4-dimethoxybenzoate, methyl 2-hydroxy-3-methoxybenzoate, methyl (3,5-dimethoxyphenyl)acetate, and methyl (2,5-dimethoxyphenyl)acetate. Of these, methyl 2,4-dimethoxybenzoate and isopropyl 2,4-dimethoxybenzoate have the highest antifeedant indices of all substances tested and are the best candidates for practical applications in order to protect planted seedlings in the field.
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Affiliation(s)
- C Rikard Unelius
- Department of Chemistry and Biomedical Sciences, University of Kalmar, 391 82, Kalmar, Sweden.
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29
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Kapur M, Khartulyari A, Maier ME. Stereoselective synthesis of protected 1,2-diols and 1,2,3-triols by a tandem hydroboration-coupling sequence. Org Lett 2007; 8:1629-32. [PMID: 16597127 DOI: 10.1021/ol0602194] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] A new approach to complex chiral diols and polyols is described utilizing a tandem hydroboration/Suzuki cross-coupling reaction. This method utilizes the versatility of a glycolate-derived chiral template.
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Affiliation(s)
- Manmohan Kapur
- Institut für Organische Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
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30
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Parenty A, Moreau X, Campagne JM. Macrolactonizations in the total synthesis of natural products. Chem Rev 2006; 106:911-39. [PMID: 16522013 DOI: 10.1021/cr0301402] [Citation(s) in RCA: 383] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A Parenty
- Institut de Chimie des Substances Naturelles, Avenue de la Terrasse, F-91198 Gif sur Yvette, France
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31
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Clarke PA, Santos S. Strategies for the Formation of Tetrahydropyran Rings in the Synthesis of Natural Products. European J Org Chem 2006. [DOI: 10.1002/ejoc.200500964] [Citation(s) in RCA: 280] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Paul A. Clarke
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
- Address from January 1, 2006: Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
| | - Soraia Santos
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
- Address from January 1, 2006: Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK
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32
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Katritzky AR, Singh SK, Cai C, Bobrov S. Direct Synthesis of Esters and Amides from Unprotected Hydroxyaromatic and -aliphatic Carboxylic Acids. J Org Chem 2006; 71:3364-74. [PMID: 16626115 DOI: 10.1021/jo052293q] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A facile method for the activation of hydroxy-substituted carboxylic acids using benzotriazole chemistry without prior protection of the hydroxy substituents is presented. The N-acylbenzotriazole intermediates 2a-g, 6a-d, and 9a-c have been used for high-yielding synthesis of both aliphatic (3a-l) and aromatic (7a-h, 10a-f) hydroxy carboxamides. High yields of aromatic hydroxy esters 12a-h and 13a-i were obtained using either neat alcohols in neutral microwave conditions or nucleophilic alkoxides and the intermediate N-(arylacyl)benzotriazoles. Moderate yields were obtained in the case of aliphatic hydroxy esters 11a,b and thiolesters 11e-g from the intermediates 2a-c.
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Affiliation(s)
- Alan R Katritzky
- Center for Heterocyclic Compounds, University of Florida, Department of Chemistry, Gainesville, Florida 32611-7200, USA.
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33
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Nakata T, Saito T, Kimishima A. Synthesis of Cyclic Ether via Intramolecular Acyloin Condensation. HETEROCYCLES 2006. [DOI: 10.3987/com-06-s(w)55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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34
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Petri AF, Sasse F, Maier ME. Synthesis and Biological Evaluation of Apicularen A Analogues. European J Org Chem 2005. [DOI: 10.1002/ejoc.200400838] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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35
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Khlebnikov AF, Novikov MS, Shinkevich EY, Vidovic D. Selective transannular ring transformations in azirino-fused eight-membered O,N- or S,N-heterocycles. Org Biomol Chem 2005; 3:4040-2. [PMID: 16267578 DOI: 10.1039/b512409c] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first examples of transannular ring transformations in azirino-fused eight-membered O,N- or S,N-heterocycles involving selective aziridine ring opening and medium-sized ring contraction are described, which provide an access to functionalized 1,4-benzox(thi)azines or 1,3-benzox(thi)azoles.
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Affiliation(s)
- Alexander F Khlebnikov
- Department of Chemistry, St. Petersburg State University, Universitetskii pr. 26, 198504, St. Petersburg, Petrodvorets, Russia.
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36
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Petri AF, Bayer A, Maier ME. Total Synthesis of Apicularen A through Transannular Pyran Formation. Angew Chem Int Ed Engl 2004. [DOI: 10.1002/ange.200460760] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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37
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Petri AF, Bayer A, Maier ME. Total Synthesis of Apicularen A through Transannular Pyran Formation. Angew Chem Int Ed Engl 2004; 43:5821-3. [PMID: 15523724 DOI: 10.1002/anie.200460760] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Andreas F Petri
- Institut für Organische Chemie, Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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38
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Molander GA, Dehmel F. Formal Total Synthesis of Oximidine II via a Suzuki-Type Cross-Coupling Macrocyclization Employing Potassium Organotrifluoroborates. J Am Chem Soc 2004; 126:10313-8. [PMID: 15315445 DOI: 10.1021/ja047190o] [Citation(s) in RCA: 113] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A formal total synthesis of oximidine II has been achieved, employing a Suzuki-type coupling approach to construct the highly strained, polyunsaturated 12-membered macrolactone. To achieve this goal, benefit was derived from the stability of potassium alkenyltrifluoroborates to establish conditions for the macrocyclization. The stereocontrolled formation of the cis-1,2-diol subunit was accomplished using a diastereoselective, reagent controlled addition to a chiral aldehyde utilizing the Carreira protocol. Advantage was taken of the Snieckus hydroborating reagent to gain access to the key trifluoroborate needed for the macrocyclization.
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Affiliation(s)
- Gary A Molander
- Contribution from the Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA.
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39
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40
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Hilli F, White JM, Rizzacasa MA. Formal Total Synthesis of (−)-Apicularen A via Transannular Conjugate Addition. Org Lett 2004; 6:1289-92. [PMID: 15070319 DOI: 10.1021/ol0497943] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The formal total synthesis of the myxobacteria metabolite (-)-apicularen A (1) is described. The key step involved a novel acid-mediated transannular conjugate addition of the C13 hydroxyl into the alpha,beta-unsaturated ketone in either of the macrolactones 5a or 5b to provide the same trans-pyranone 4. Conversion of 4 into the known apicularen intermediate diol 3 completed the formal synthesis. [reaction: see text]
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Affiliation(s)
- Ferdows Hilli
- School of Chemistry, The University of Melbourne, Victoria 3010, Australia
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41
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Affiliation(s)
- Larry Yet
- Medicinal Chemistry Department, Albany Molecular Research, Inc., P.O. Box 15098, Albany, New York 12212-5098, USA
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42
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Yang K, Blackman B, Diederich W, Flaherty PT, Mossman CJ, Roy S, Ahn YM, Georg GI. Formal Total Synthesis of (+)-Salicylihalamides A and B: A Combined Chiral Pool and RCM Strategy. J Org Chem 2003; 68:10030-9. [PMID: 14682697 DOI: 10.1021/jo0301550] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The formal total synthesis of the (+)-salicylihalamides A and B is detailed, utilizing a chiral pool approach to generate the three stereogenic centers and a ring-closing metathesis (RCM) for the formation of the macrocyclic ring structure. Starting from a known glucose-derived alcohol, the formal total synthesis was achieved in an efficient 13-step protocol in 26% overall yield. It was found that substitution at the remote phenolic group significantly influenced the ratio of the E- and Z-double bond products in the RCM step. The introduction of phenol protecting groups provided E-isomers preferentially and also enhanced the rates of the RCM reactions.
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Affiliation(s)
- KyoungLang Yang
- Department of Medicinal Chemistry, Center for Cancer Experimental Therapeutics, and the Drug Discovery Program, Higuchi Biosciences Center, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-7582, USA
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43
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44
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45
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Bauer M, Maier ME. Synthesis of the core structure of salicylihalamide A by intramolecular Suzuki reaction. Org Lett 2002; 4:2205-8. [PMID: 12074668 DOI: 10.1021/ol026040k] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] An intramolecular Suzuki coupling was used to establish the core structure of the benzolactone enamide salicylihalamide A. This strategy combines a diastereoselective hydroboration with a subsequent cross-coupling.
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Affiliation(s)
- Matthias Bauer
- Institut für Organische Chemie, Universität Tübingen, Auf der Morgenstelle 18, D-72076 Tübingen, Germany
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