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Shiomi S, Shennan BDA, Yamazaki K, Fuentes de Arriba ÁL, Vasu D, Hamlin TA, Dixon DJ. A New Organocatalytic Desymmetrization Reaction Enables the Enantioselective Total Synthesis of Madangamine E. J Am Chem Soc 2022; 144:1407-1415. [PMID: 35037758 PMCID: PMC8796237 DOI: 10.1021/jacs.1c12040] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
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The
enantioselective total synthesis of madangamine E has been
completed in 30 steps, enabled by a new catalytic and highly enantioselective
desymmetrizing intramolecular Michael addition reaction of a prochiral
ketone to a tethered β,β′-disubstituted
nitroolefin. This key carbon–carbon bond forming reaction efficiently
constructed a chiral bicyclic core in near-perfect enantio- and diastereo-selectivity,
concurrently established three stereogenic centers, including a quaternary
carbon, and proved highly scalable. Furthermore, the pathway and origins
of enantioselectivity in this catalytic cyclization were probed using
density functional theory (DFT) calculations, which revealed the crucial
substrate/catalyst interactions in the enantio-determining step. Following
construction of the bicyclic core, the total synthesis of madangamine
E could be completed, with key steps including a mild one-pot oxidative
lactamization of an amino alcohol, a two-step Z-selective
olefination of a sterically hindered ketone, and ring-closing metatheses
to install the two macrocyclic rings.
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Affiliation(s)
- Shinya Shiomi
- Department of Chemistry, University of Oxford, Chemical Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K
| | - Benjamin D A Shennan
- Department of Chemistry, University of Oxford, Chemical Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K
| | - Ken Yamazaki
- Department of Chemistry, University of Oxford, Chemical Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K.,Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), and Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Ángel L Fuentes de Arriba
- Department of Chemistry, University of Oxford, Chemical Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K
| | - Dhananjayan Vasu
- Department of Chemistry, University of Oxford, Chemical Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K
| | - Trevor A Hamlin
- Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), and Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Darren J Dixon
- Department of Chemistry, University of Oxford, Chemical Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, U.K
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Marquès C, Diaba F, Roca J, Bonjoch J. Synthesis and reactivity of hydroindole enelactams leading to densely functionalized scaffolds. Org Biomol Chem 2021; 19:2284-2301. [PMID: 33625434 DOI: 10.1039/d1ob00060h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The 5-endo-trig radical cyclization of N-benzyl-N-[(2-substituted)cycloalkenyl] trichloroacetamides (tetrasubstituted enamides) using Bu3SnH and AIBN is a reliable synthetic procedure giving access to 3a-methyl- and 3a-methoxycarbonyl enelactams. The substrate-controlled diastereoselective enolate alkylation of these enelactams resulted in the synthesis of a set of 3-substituted derivatives that upon reduction furnished polyfunctionalized cis-octahydroindoles. The latter building blocks, which embody three consecutive stereocenters at C-3, C-3a, and C-7a, were also synthesized through an initial reductive radical cyclization using (carbo-substituted)dichloroacetamides.
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Affiliation(s)
- Clàudia Marquès
- Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII s/n, 08028-Barcelona, Spain
| | - Faïza Diaba
- Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII s/n, 08028-Barcelona, Spain
| | - Jaume Roca
- Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII s/n, 08028-Barcelona, Spain
| | - Josep Bonjoch
- Laboratori de Química Orgànica, Facultat de Farmàcia, Universitat de Barcelona, Av. Joan XXIII s/n, 08028-Barcelona, Spain
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3
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Nájera C, Foubelo F, Sansano JM, Yus M. Stereodivergent routes in organic synthesis: carbohydrates, amino acids, alkaloids and terpenes. Org Biomol Chem 2020; 18:1232-1278. [DOI: 10.1039/c9ob02419k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The natural occurrence of enantiomers and diastereomers is often encountered.
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Affiliation(s)
- Carmen Nájera
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
| | - Francisco Foubelo
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
- Departamento de Química Orgánica
| | - José M. Sansano
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
- Departamento de Química Orgánica
| | - Miguel Yus
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Universidad de Alicante
- E-03080 Alicante
- Spain
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Abstract
This chapter is focused on madangamines, a small group of complex diamine alkaloids isolated from marine sponges of the order Haplosclerida, and covers their isolation, characterization, biogenesis, biological activity, and synthesis. Structurally, madangamines are pentacyclic alkaloids with an unprecedented skeletal type, characterized by a common diazatricyclic core and two peripheral macrocyclic rings. The isolation of these alkaloids from Xestospongia ingens (madangamines A-E) and Pachychalina alcaloidifera (madangamine F) is described in detail. Physical and complete spectroscopic 1H and 13C NMR data are included. The proposed biogenesis of madangamines from ammonia, a functionalized three-carbon unit, and saturated or unsaturated linear long-chain dialdehydes, via partially reduced bis-alkylpyridine macrocycles, is discussed. The synthesis of alkaloids of the madangamine group has been little explored, with only one total synthesis reported so far, that of (+)-madangamine D. This review also describes several model synthetic approaches to the diazatricyclic ABC core of these alkaloids, as well as model studies on the construction of the (Z,Z)-unsaturated 11-membered E macrocycle common to madangamines A-E, the 13- and 14-membered D rings of madangamines C-E, and the all-cis-triunsaturated 15-membered D ring of madangamine A. Some members of this group have shown significant in vitro cytotoxicity against a number of cancer cell lines.
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Ballette R, Pérez M, Proto S, Amat M, Bosch J. Total Synthesis of (+)-Madangamine D. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402263] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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6
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Ballette R, Pérez M, Proto S, Amat M, Bosch J. Total Synthesis of (+)-Madangamine D. Angew Chem Int Ed Engl 2014; 53:6202-5. [DOI: 10.1002/anie.201402263] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Indexed: 11/07/2022]
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Amat M, Guignard G, Llor N, Bosch J. Access to enantiopure 4-substituted 1,5-aminoalcohols from phenylglycinol-derived δ-lactams: synthesis of Haliclona alkaloids. J Org Chem 2014; 79:2792-802. [PMID: 24555853 DOI: 10.1021/jo5002627] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
LiNH2BH3-promoted reductive opening of 8-substituted phenylglycinol-derived oxazolopiperidone lactams leads to enantiopure 4-substituted-5-aminopentanols, which are used as starting building blocks in the synthesis of the Haliclona alkaloids haliclorensin C, haliclorensin, and halitulin (formal). The starting lactams are easily accessible by a cyclocondensation reaction of (R)-phenylglycinol with racemic γ-subtituted δ-oxoesters, in a process that involves a dynamic kinetic resolution.
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Affiliation(s)
- Mercedes Amat
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona , 08028 Barcelona, Spain
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Amat M, Pérez M, Bosch J. Stereoselective Conjugate Addition Reactions to Phenylglycinol‐Derived, Unsaturated Oxazolopiperidone Lactams. Chemistry 2011; 17:7724-32. [DOI: 10.1002/chem.201100471] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mercedes Amat
- Laboratory of Organic Chemistry, Faculty of Pharmacy and Insitute of Biomedicine (IBUB), University of Barcelona, Av. Joan XXIII, s/n, 08028 Barcelona (Spain), Fax: (+34)934024539
| | - Maria Pérez
- Laboratory of Organic Chemistry, Faculty of Pharmacy and Insitute of Biomedicine (IBUB), University of Barcelona, Av. Joan XXIII, s/n, 08028 Barcelona (Spain), Fax: (+34)934024539
| | - Joan Bosch
- Laboratory of Organic Chemistry, Faculty of Pharmacy and Insitute of Biomedicine (IBUB), University of Barcelona, Av. Joan XXIII, s/n, 08028 Barcelona (Spain), Fax: (+34)934024539
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Amat M, Checa B, Llor N, Pérez M, Bosch J. Conjugate Addition of 2-Acetylindole Enolates to Unsaturated Oxazolopiperidone Lactams: Enantioselective Access to the Tetracyclic Ring System of Ervitsine. European J Org Chem 2010. [DOI: 10.1002/ejoc.201001020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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10
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Semak V, Escolano C, Arróniz C, Bosch J, Amat M. A practical procedure for the removal of the phenylethanol moiety from phenylglycinol-derived lactams. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.09.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Amat M, Pérez M, Proto S, Gatti T, Bosch J. First Enantioselective Synthesis of the Diazatricyclic Core of Madangamine Alkaloids. Chemistry 2010; 16:9438-41. [DOI: 10.1002/chem.201000421] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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Amat M, Brunaccini E, Checa B, Pérez M, Llor N, Bosch J. An Unexpected Oxidation in the Generation of Cyclopenta[c]piperidines by Ring-Closing Metathesis. Org Lett 2009; 11:4370-3. [DOI: 10.1021/ol901704f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mercedes Amat
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona, 08028 Barcelona, Spain
| | - Elisa Brunaccini
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona, 08028 Barcelona, Spain
| | - Begoña Checa
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona, 08028 Barcelona, Spain
| | - Maria Pérez
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona, 08028 Barcelona, Spain
| | - Núria Llor
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona, 08028 Barcelona, Spain
| | - Joan Bosch
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona, 08028 Barcelona, Spain
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Camarero C, González-Temprano I, Gómez-SanJuan A, Arrasate S, Lete E, Sotomayor N. Stereocontrolled conjugate additions to dihydroindolizinone systems. Synthesis of enantiopure polysubstituted tetrahydropyrrolo[2,1-a]isoquinolones. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.05.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the Year 2007. Coord Chem Rev 2009. [DOI: 10.1016/j.ccr.2008.12.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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15
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Sośnicki JG. Michael addition of nitroalkanes to nonactivated α,β-unsaturated δ-thiolactams: reactivity, diastereoselectivity, and comparison to α,β-unsaturated δ-lactams. Tetrahedron 2009. [DOI: 10.1016/j.tet.2008.12.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Amat M, Fabregat R, Griera R, Bosch J. A General Synthetic Route to Enantiopure 5-Substituted cis-Decahydroquinolines. J Org Chem 2009; 74:1794-7. [DOI: 10.1021/jo802587h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mercedes Amat
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona, Av. Joan XXIII s/n, 08028 Barcelona, Spain
| | - Robert Fabregat
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona, Av. Joan XXIII s/n, 08028 Barcelona, Spain
| | - Rosa Griera
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona, Av. Joan XXIII s/n, 08028 Barcelona, Spain
| | - Joan Bosch
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona, Av. Joan XXIII s/n, 08028 Barcelona, Spain
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Amat M, Checa B, Llor N, Molins E, Bosch J. Enantioselective total synthesis of the indole alkaloid 16-episilicine. Chem Commun (Camb) 2009:2935-7. [DOI: 10.1039/b904521j] [Citation(s) in RCA: 16] [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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18
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L. Terán J, Gnecco D, M. Lumbreras A, Galindo A, R. Juárez J, L. Orea M, Castro A, G. Enríquez R, F. Reynolds W. A Short Synthesis of Indolizidine (+)-209B from (3R,6S,8AS)-(-)-6-Methyl-3-phenyl-hexahydrooxazolo[3,2-a]pyridin-5-one. HETEROCYCLES 2009. [DOI: 10.3987/com-09-11764] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Amat M, Pérez M, Minaglia AT, Passarella D, Bosch J. Stereocontrolled synthesis of enantiopure cis- and trans-3,4,4a,5,8,8a-hexahydro-1H-quinolin-2-ones. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.10.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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A combined RCM-Bischler–Napieralski strategy towards the synthesis of the carbon skeleton of excentricine and related stephaoxocanes. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.08.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Amat M, Pérez M, Minaglia AT, Bosch J. An Enantioselective Synthetic Route to cis-2,4-Disubstituted and 2,4-Bridged Piperidines. J Org Chem 2008; 73:6920-3. [DOI: 10.1021/jo801172b] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mercedes Amat
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona, 08028 Barcelona, Spain
| | - Maria Pérez
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona, 08028 Barcelona, Spain
| | - Annamaria T. Minaglia
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona, 08028 Barcelona, Spain
| | - Joan Bosch
- Laboratory of Organic Chemistry, Faculty of Pharmacy, and Institute of Biomedicine (IBUB), University of Barcelona, 08028 Barcelona, Spain
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Enantioselective synthesis of 2-[(3-ethyl-4-piperidyl)methyl]indoles from a phenylglycinol-derived lactam: formal synthesis of Strychnos alkaloids. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.07.079] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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