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Masuda Borylation–Suzuki Coupling (MBSC) Sequence: A One-Pot Process to Access Complex (hetero)Biaryls. Catalysts 2023. [DOI: 10.3390/catal13020350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The direct formation of (hetero)biaryls from readily available (hetero)aryl halides under mild reaction conditions can be efficiently achieved through the Masuda borylation–Suzuki coupling (MBSC) sequence. The MBSC sequence catenates Pd-catalyzed Masuda borylation and Suzuki coupling into a one-pot process, giving access to diverse symmetrically and unsymmetrically substituted scaffolds. (Hetero)biaryls are ubiquitous structural motifs that appear in natural products, pharmaceutically relevant scaffolds, functional dyes, and several other structures. This review summarizes the development of the MBSC sequence and its improvements over the past two decades.
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Sirindil F, Weibel JM, Pale P, Blanc A. Rhazinilam-leuconolam family of natural products: a half century of total synthesis. Nat Prod Rep 2022; 39:1574-1590. [PMID: 35699109 DOI: 10.1039/d2np00026a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covering: 1972 to 2021The rhazinilam family of natural products exhibits a main structure with a stereogenic quaternary carbon and a tetrahydroindolizine core imbedded within a 9-membered macrocycle, imposing axial chirality. This unique architecture combined with their taxol-like antimitotic activities have attracted various attention, especially from synthetic chemists, notably in the past decade. The present review describes the known total and formal syntheses of the members of the rhazinilam family (rhazinilam, rhazinal, leuconolam and kopsiyunnanines), according to the strategy developed.
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Affiliation(s)
- Fatih Sirindil
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 Rue Blaise Pascal, 67070 Strasbourg, France.
| | - Jean-Marc Weibel
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 Rue Blaise Pascal, 67070 Strasbourg, France.
| | - Patrick Pale
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 Rue Blaise Pascal, 67070 Strasbourg, France.
| | - Aurélien Blanc
- Laboratoire de Synthèse, Réactivité Organiques et Catalyse, Institut de Chimie, UMR 7177 - CNRS, Université de Strasbourg, 4 Rue Blaise Pascal, 67070 Strasbourg, France.
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Pfaffenbach M, Gaich T. The Rhazinilam-Leuconoxine-Mersicarpine Triad of Monoterpenoid Indole Alkaloids. THE ALKALOIDS: CHEMISTRY AND BIOLOGY 2017; 77:1-84. [DOI: 10.1016/bs.alkal.2016.07.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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4
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Nowak M, Malinowski Z, Fornal E, Jóźwiak A, Parfieniuk E, Gajek G, Kontek R. Substituted benzoquinazolinones. Part 2: Synthesis of amino-, and sulfanyl-derivatives of benzo[f]- and benzo[h]quinazolinones. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.10.049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Pfaffenbach M, Gaich T. The Diaza[5.5.6.6]fenestrane Skeleton-Synthesis of Leuconoxine Alkaloids. Chemistry 2015; 22:3600-10. [DOI: 10.1002/chem.201502228] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Magnus Pfaffenbach
- Institute of Organic Chemistry; Leibniz University of Hannover; Schneiderberg 1b 30167 Hannover Germany
| | - Tanja Gaich
- Institute of Organic Chemistry; Leibniz University of Hannover; Schneiderberg 1b 30167 Hannover Germany
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6
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Sugimoto K, Miyakawa Y, Tokuyama H. Total synthesis of (−)-rhazinilam using 1,3-dipolar cycloaddition of optically active münchnone intermediate. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.12.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Sailu M, Muley SS, Das A, Mainkar PS, Chandrasekhar S. Formal total synthesis of (±)-rhazinal and its B-ring carbamate analogue. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.12.090] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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8
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Palaniraja J, Roopan SM. Iodine-mediated synthesis of indazolo-quinazolinones via a multi-component reaction. RSC Adv 2015. [DOI: 10.1039/c4ra13779e] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report an expeditious synthesis of selected indazolo-quinazolinone derivatives via an iodine-mediated multi-component reaction (MCR).
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Affiliation(s)
- Jeyakannu Palaniraja
- Chemistry Research Laboratory
- Organic Chemistry Division
- School of Advanced Sciences
- VIT University
- Vellore
| | - Selvaraj Mohana Roopan
- Chemistry Research Laboratory
- Organic Chemistry Division
- School of Advanced Sciences
- VIT University
- Vellore
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10
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Kholod I, Vallat O, Buciumas AM, Neels A, Neier R. Synthetic Strategies for the Synthesis and Transformation of Substituted Pyrrolinones as Advanced Intermediates for Rhazinilam Analogues. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402903] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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11
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Solé D, Mariani F. Synthesis of Dibenzo[b,e]azepin-11-ones by Intramolecular Palladium-Catalyzed Acylation of Aryliodides with Aldehydes. J Org Chem 2013; 78:8136-42. [DOI: 10.1021/jo4009244] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel Solé
- Laboratori
de Química Orgànica, Facultat
de Farmàcia, and Institut de Biomedicina (IBUB), Universitat de Barcelona, 08028-Barcelona, Spain
| | - Francesco Mariani
- Laboratori
de Química Orgànica, Facultat
de Farmàcia, and Institut de Biomedicina (IBUB), Universitat de Barcelona, 08028-Barcelona, Spain
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12
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Sui X, Zhu R, Li G, Ma X, Gu Z. Pd-Catalyzed Chemoselective Catellani Ortho-Arylation of Iodopyrroles: Rapid Total Synthesis of Rhazinal. J Am Chem Soc 2013; 135:9318-21. [DOI: 10.1021/ja404494u] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xianwei Sui
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui
230026, China
| | - Rui Zhu
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui
230026, China
| | - Gencheng Li
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui
230026, China
| | - Xinna Ma
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui
230026, China
| | - Zhenhua Gu
- Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui
230026, China
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Chen DYK, Youn SW. C-H activation: a complementary tool in the total synthesis of complex natural products. Chemistry 2012; 18:9452-74. [PMID: 22736530 DOI: 10.1002/chem.201201329] [Citation(s) in RCA: 451] [Impact Index Per Article: 37.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Indexed: 02/05/2023]
Abstract
The recent advent of transition-metal mediated C-H activation is revolutionizing the synthetic field and gradually infusing a "C-H activation mind-set" in both students and practitioners of organic synthesis. As a powerful testament of this emerging synthetic tool, applications of C-H activation in the context of total synthesis of complex natural products are beginning to blossom. Herein, recently completed total syntheses showcasing creative and ingenious incorporation of C-H activation as a strategic manoeuver are compared with their "non-C-H activation" counterparts, illuminating a new paradigm in strategic synthetic design.
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Affiliation(s)
- David Y-K Chen
- Department of Chemistry, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul 151-742, South Korea.
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Waser M. Iminium Catalysis. ASYMMETRIC ORGANOCATALYSIS IN NATURAL PRODUCT SYNTHESES 2012:45-68. [DOI: 10.1007/978-3-7091-1163-5_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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15
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16
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Taldone T, Zatorska D, Chiosis G. Reaction of 2-Naphthylamine with Sodium Iodate/Sodium Sulfite: Synthesis of 2-Amino-1-iodonaphthalene. SYNTHETIC COMMUN 2011. [DOI: 10.1080/00397911.2010.528290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Tony Taldone
- a Program in Molecular Pharmacology and Chemistry and Department of Medicine , Memorial Sloan-Kettering Cancer Center , New York , New York , USA
| | - Danuta Zatorska
- a Program in Molecular Pharmacology and Chemistry and Department of Medicine , Memorial Sloan-Kettering Cancer Center , New York , New York , USA
| | - Gabriela Chiosis
- a Program in Molecular Pharmacology and Chemistry and Department of Medicine , Memorial Sloan-Kettering Cancer Center , New York , New York , USA
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17
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Paleo E, Osornio YM, Miranda LD. Synthesis of (±)-desethylrhazinal using a tandem radical addition-cyclization process. Org Biomol Chem 2011; 9:361-2. [DOI: 10.1039/c0ob00572j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bringmann G, Gulder T, Gulder TAM, Breuning M. Atroposelective Total Synthesis of Axially Chiral Biaryl Natural Products. Chem Rev 2010; 111:563-639. [DOI: 10.1021/cr100155e] [Citation(s) in RCA: 909] [Impact Index Per Article: 64.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Gerhard Bringmann
- Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Tanja Gulder
- Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Tobias A. M. Gulder
- Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Matthias Breuning
- Institute of Organic Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany
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19
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Vallat O, Buciumas AM, Neier R, Stoeckli-Evans H. rac-Methyl 4-azido-3-hydr-oxy-3-(2-nitro-phen-yl)butanoate. Acta Crystallogr Sect E Struct Rep Online 2009; 65:o396-o397. [PMID: 21581990 PMCID: PMC2968186 DOI: 10.1107/s1600536808043857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2008] [Accepted: 12/24/2008] [Indexed: 05/30/2023]
Abstract
In the title compound, C(11)H(12)N(4)O(5), the mean plane through the nitro substituent on the benzene ring is inclined to the benzene mean plane by 85.8 (2)°, which avoids steric inter-actions with the ortho substituents. The hydr-oxy group is involved in bifurcated hydrogen bonds. The first is an intra-molecular O-H⋯O hydrogen bond, involving the ester carbonyl O atom, which gives rise to the formation of a boat-like hydrogen-bonded chelate ring. The second is an inter-molecular O-H⋯N hydrogen bond involving the first N atom of the azide group of a symmetry-related mol-ecule. In the crystal structure this leads to the formation of a polmer chain extending in the c-axis direction.
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Affiliation(s)
- Olivier Vallat
- Institute of Chemistry, University of Neuchâtel, Rue Emile-Argand 11, CH-2009 Neuchâtel, Switzerland
| | - Ana-Maria Buciumas
- Institute of Chemistry, University of Neuchâtel, Rue Emile-Argand 11, CH-2009 Neuchâtel, Switzerland
| | - Reinhard Neier
- Institute of Chemistry, University of Neuchâtel, Rue Emile-Argand 11, CH-2009 Neuchâtel, Switzerland
| | - Helen Stoeckli-Evans
- Institute of Physics, University of Neuchâtel, Rue Emile-Argand 11, CH-2009 Neuchâtel, Switzerland
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20
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Beck E, Hatley R, Gaunt M. Synthesis of Rhazinicine by a Metal-Catalyzed CH Bond Functionalization Strategy. Angew Chem Int Ed Engl 2008; 47:3004-7. [DOI: 10.1002/anie.200705005] [Citation(s) in RCA: 236] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Beck E, Hatley R, Gaunt M. Synthesis of Rhazinicine by a Metal-Catalyzed CH Bond Functionalization Strategy. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200705005] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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Affiliation(s)
- Toh-Seok Kam
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
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23
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Baudoin O. Synthesis of tubulin-binding bridged biaryls via intermolecular Suzuki coupling. CR CHIM 2008. [DOI: 10.1016/j.crci.2007.02.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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24
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Subramaniam G, Hiraku O, Hayashi M, Koyano T, Komiyama K, Kam TS. Biologically active aspidofractinine, rhazinilam, akuammiline, and vincorine alkaloids from Kopsia. JOURNAL OF NATURAL PRODUCTS 2007; 70:1783-1789. [PMID: 17939738 DOI: 10.1021/np0703747] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Eleven new indole alkaloids, in addition to the previously reported rhazinal (1), and 14 other known alkaloids, were obtained from the Malayan Kopsia singapurensis, viz., kopsiloscines A-F (2-7), 16-epikopsinine (8), kopsilongine- N-oxide (9), 16-epiakuammiline (10), aspidophylline A (11), and vincophylline (12). The structures of these alkaloids were determined using NMR and MS analyses. Rhazinal (1), rhazinilam (17), and rhazinicine (18) showed appreciable cytotoxicity toward drug-sensitive as well as vincristine-resistant KB cells, while kopsiloscines A (2), B (3), and D (5) and aspidophylline A (11) were found to reverse drug-resistance in drug-resistant KB cells.
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Affiliation(s)
- G Subramaniam
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
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25
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Bonneau AL, Robert N, Hoarau C, Baudoin O, Marsais F. A new synthetic approach to biaryls of the rhazinilam type. Application to synthesis of three novel phenylpyridine-carbamate analogues. Org Biomol Chem 2007; 5:175-83. [PMID: 17164923 DOI: 10.1039/b613173e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of three novel racemic phenylpyridine-carbamate analogues of rhazinilam and their biological evaluation as inhibitors of microtubule assembly and disassembly by interaction with tubulin are described. The sterically hindered ortho-disubstituted biaryl unit as the challenging key structural element is first obtained by a sequential regiocontrolled nucleophilic addition of a lithium ortho-lithiohomobenzylic alkoxide species to 3-bromo-5-oxazolyl pyridine as the electrophile and a subsequent oxidation step. The incorporation of the amino group by replacement of the bromide has been achieved using a Buchwald-Hartwig amination coupling. Ultimate deprotection steps furnished free-amino and free-hydroxyl appendages which were connected by phosgenation to furnish the nine-membered median carbamate ring.
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Affiliation(s)
- Anne-Laure Bonneau
- Laboratoire de Chimie Organique Fine et Hétérocyclique UMR 6014, Université et INSA de Rouen, Place E. Blondel, 76131, Mont Saint Aignan, France
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Hájíček J. A Review on Recent Developments in Syntheses of the post-Secodine Indole Alkaloids. Part II: Modified Alkaloid Types. ACTA ACUST UNITED AC 2007. [DOI: 10.1135/cccc20070821] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The second part of the planned review on developments in the field of total and formal total synthesis of the post-secodine indole alkaloids concentrates on modified alkaloid types, i.e. those skeletons derived from primary types by formation of additional and/or rupture of existing bonds, while connectivities next to indol(e)ine moiety remain intact. It thus reviews the synthesis of alkaloids of quebrachamine/cleavamine type including VLB-bis-indoles, rhazinilam type, aspidofractinine/kopsane and kopsifoline type, as well as kopsijasminilam alkaloids, lapidilectine B and danuphylline. It covers the literature of from 1991-1992 up to approximately end 2006. A review with 174 references.
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Décor A, Monse B, Martin MT, Chiaroni A, Thoret S, Guénard D, Guéritte F, Baudoin O. Synthesis and biological evaluation of B-ring analogues of (−)-rhazinilam. Bioorg Med Chem 2006; 14:2314-32. [PMID: 16314101 DOI: 10.1016/j.bmc.2005.11.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2005] [Revised: 11/03/2005] [Accepted: 11/08/2005] [Indexed: 10/25/2022]
Abstract
Three macrocyclic analogues of rhazinilam 1 having a 11- or 12-membered B-ring with an endocyclic carbamate group or an amino-acid residue were synthesized from the natural product. These analogues 3 and 4 displayed a very low activity on tubulin. Thirty N-1 and C-16 substituted analogues of rhazinilam were also synthesized regioselectively from rhazinilam. Stereochemical analyses showed that N-1 and C-16alpha analogues have the same conformation as rhazinilam, whereas C-16beta analogues adopt a different conformation for rings B and D. All N-1 and C-16 analogues were less active than rhazinilam on tubulin, though analogues 5a, 6aalpha, 6balpha, and 6f having the less bulky substituents retained close affinities. A few analogues either active (like 6f) or inactive (like 5o) on tubulin showed significant inhibition of the growth of KB cancer cells.
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Affiliation(s)
- Anne Décor
- Institut de Chimie des Substances Naturelles, CNRS, avenue de la Terrasse, 91198 Gif-sur-Yvette cedex, France
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Décor A, Bellocq D, Thoison O, Lekieffre N, Chiaroni A, Ouazzani J, Cresteil T, Guéritte F, Baudoin O. In vitro oxidative metabolism study of (−)-rhazinilam. Bioorg Med Chem 2006; 14:1558-64. [PMID: 16257221 DOI: 10.1016/j.bmc.2005.10.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2005] [Revised: 09/30/2005] [Accepted: 10/04/2005] [Indexed: 11/21/2022]
Abstract
Metabolism studies were conducted in order to investigate the reasons for the in vivo lack of activity of (-)-rhazinilam 1, an original poison of the mitotic spindle. Bioconversion by Beauveria bassiana strains, rat and human liver microsomes allowed the identification of metabolites 2, 3, and 4 oxidized in positions 3 and 5 of rhazinilam. Further experiments indicated that CYP2B6 was the main CYP responsible for the oxidation of 1 by human liver microsomes. All isolated metabolites were markedly less active than rhazinilam in vitro, which might explain its in vivo inactivity.
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Affiliation(s)
- Anne Décor
- Institut de Chimie des Substances Naturelles, CNRS, Gif-sur-Yvette, France
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Morita H, Awang K, Hadi AHA, Takeya K, Itokawa H, Kobayashi J. Conformational analysis of rhazinilam and three-dimensional quantitative structure–activity relationships of rhazinilam analogues. Bioorg Med Chem Lett 2005; 15:1045-50. [PMID: 15686909 DOI: 10.1016/j.bmcl.2004.12.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2004] [Revised: 12/09/2004] [Accepted: 12/10/2004] [Indexed: 11/19/2022]
Abstract
3D QSAR of rhazinilam (1), an alkaloid isolated from Rhazya stricta (Apocynaceae) with an activity involving disassembly of microtubules and its derivatives was investigated by using the comparative molecular field analysis (CoMFA). In an effort to get a better understanding of the correlation between conformation and antitubulin activity of 1, most probable minimum energy conformation in solution of 1 was analyzed on the basis of NMR data of 1 in solution. The results indicated a correlation between the antitubulin activity of these alkaloids and the steric and electrostatic factors, which modulate their biological activity, and accounted for the potent activities of 1 with suitable relationship for the overall conformation.
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Affiliation(s)
- Hiroshi Morita
- Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo 060-0812, Japan
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Applied Suzuki cross-coupling reaction for syntheses of biologically active compounds. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s0169-3158(06)80004-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Herrbach A, Marinetti A, Baudoin O, Guénard D, Guéritte F. Asymmetric synthesis of an axially chiral antimitotic biaryl via an atropo-enantioselective Suzuki cross-coupling. J Org Chem 2003; 68:4897-905. [PMID: 12790597 DOI: 10.1021/jo034298y] [Citation(s) in RCA: 97] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A catalytic asymmetric synthesis of the axially chiral bridged biaryl (-)-2, a structural analogue of natural (-)-rhazinilam possessing original antimitotic properties, is described. The key step is an intermolecular asymmetric Suzuki coupling, furnishing the nonbridged biaryl (-)-6, precursor of (-)-2, with up to 40% ee using binaphthyl ligand 7a. Various known or new binaphthyl and ferrocenyl phosphines as well as phosphetanes were screened as ligands in this reaction, the conditions of which were optimized. The comparison with another Suzuki coupling system showed that 7a is the most versatile ligand described to date for this type of transformation. This work gives the first application of the asymmetric Suzuki coupling to a biologically relevant target.
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Affiliation(s)
- Audrey Herrbach
- Institut de Chimie des Substances Naturelles, CNRS, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France
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Natural Bridged Biaryls with Axial Chirality and Antimitotic Properties. BIOACTIVE NATURAL PRODUCTS (PART J) 2003. [DOI: 10.1016/s1572-5995(03)80011-x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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