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Yuan J, Jain P, Antilla JC. Bi(cyclopentyl)diol-Derived Boronates in Highly Enantioselective Chiral Phosphoric Acid-Catalyzed Allylation, Propargylation, and Crotylation of Aldehydes. J Org Chem 2020; 85:12988-13003. [PMID: 32960066 DOI: 10.1021/acs.joc.0c01646] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In this study, we disclose the catalytic addition of bi(cyclopentyl)diol-derived boronates to aldehydes promoted by chiral phosphoric acids, allowing for the formation of enantioenriched homoallylic, propargylic, and crotylic alcohols (up to >99% enantiomeric excess (ee), diastereomeric ratio (dr) >20:1). These boronate substrates provided superior enantioselectivities, allowing for the reactions to proceed with low catalyst loading (0.5-5 mol %) and reduced reaction time (15 min at room temperature for aldehyde allylboration). A wide substrate scope was exhibited, and the novel boronates provided high enantiocontrol. Reactions with substituted allylboronates and aldehydes yielded vicinal stereogenic alcohols bearing β-tertiary or quaternary carbon centers. High enantio- and diastereoselectivities were found due to the closed six-membered chair-like transition state, with backbone modifications of the boronate and its interactions with the chiral phosphoric acid being the most likely contributing factor.
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Affiliation(s)
- Jinping Yuan
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Pankaj Jain
- Novartis Institutes for BioMedical Research, Cambridge, Massachusetts 02139, United States
| | - Jon C Antilla
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.,School of Sciences, Zhejiang Sci-Tech University, Hangzhou City, Zhejiang Province 310018, China
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2
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Hanson PR, Jayasinghe S, Maitra S, Markley JL. Phosphate tethers in natural product synthesis. Top Curr Chem (Cham) 2014; 361:253-71. [PMID: 25518970 DOI: 10.1007/128_2014_572] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Recent advances in phosphate tether-mediated natural product synthesis are reviewed. Synthetic approaches toward dolabelide C, (-)-salicylihalimide A, (-)-tetrahydrolipstatin, and (+)-strictifolione are included. In addition, current efforts in method development are briefly reviewed, including a detailed study on the effect of stereochemical complexity on the phosphate-mediated, diastereoselective ring-closing metathesis reaction and recent advances in multi-reaction, one-pot sequential processes mediated by the phosphate tether. Overall, this review seeks to highlight the utility of phosphate triesters to serve as multifunctional tethers with protecting group and latent leaving group characteristics and the ability to orchestrate multiple, orthogonal reaction pathways to allow for the facile synthesis of complex, bioactive small molecules and their analogs.
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Affiliation(s)
- Paul R Hanson
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Dr., 2010 Malott Hall, Lawrence, KS, 66045-7572, USA,
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3
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Cordonnier MCA, Kan SBJ, Gockel B, Goh SS, Anderson EA. Carbopalladation of bromoene-alkynylsilanes: mechanistic insights and synthesis of fused-ring bicyclic silanes and phenols. Org Chem Front 2014. [DOI: 10.1039/c4qo00123k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Palladium-catalyzed cyclizations of silylated bromoenynes lead to bicyclic cyclohexadienes that are precursors to enones and phenols. Novel cyclization pathways and mechanistic insights are also disclosed.
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Affiliation(s)
| | | | - Birgit Gockel
- Chemistry Research Laboratory
- University of Oxford
- Oxford, UK
| | - Shermin S. Goh
- Chemistry Research Laboratory
- University of Oxford
- Oxford, UK
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4
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Goncalves S, Santoro S, Nicolas M, Wagner A, Maillos P, Himo F, Baati R. Cationic Cyclization of 2-Alkenyl-1,3-dithiolanes: Diastereoselective Synthesis of trans-Decalins. J Org Chem 2011; 76:3274-85. [DOI: 10.1021/jo2001116] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sylvie Goncalves
- Université de Strasbourg, Faculté de Pharmacie UMR/CNRS 7199, Laboratoire des Systèmes Chimiques Fonctionnels, 74 route du Rhin, BP 60024, 67401 Illkirch, France
| | - Stefano Santoro
- Department of Organic Chemistry, Arrhenius Laboratory, SE-10691 Stockholm, Sweden
| | - Marc Nicolas
- Les Laboratoires Pierre Fabre, Centre de Développement Chimique et Industriel, 16 rue Jean Rostand, 81600 Gaillac, France
| | - Alain Wagner
- Université de Strasbourg, Faculté de Pharmacie UMR/CNRS 7199, Laboratoire des Systèmes Chimiques Fonctionnels, 74 route du Rhin, BP 60024, 67401 Illkirch, France
| | - Philippe Maillos
- Les Laboratoires Pierre Fabre, Centre de Développement Chimique et Industriel, 16 rue Jean Rostand, 81600 Gaillac, France
| | - Fahmi Himo
- Department of Organic Chemistry, Arrhenius Laboratory, SE-10691 Stockholm, Sweden
| | - Rachid Baati
- Université de Strasbourg, Faculté de Pharmacie UMR/CNRS 7199, Laboratoire des Systèmes Chimiques Fonctionnels, 74 route du Rhin, BP 60024, 67401 Illkirch, France
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5
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Chen M, Roush WR. Enantioselective syntheses of syn- and anti-β-hydroxyallylsilanes via allene hydroboration-aldehyde allylboration reactions. Org Lett 2011; 13:1992-5. [PMID: 21410173 DOI: 10.1021/ol200392u] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The kinetic hydroboration of allenylsilane 5 with ((d)Ipc)(2)BH at -40 °C provides allylborane 9Z with ≥12:1 selectivity. When the hydroboration is performed at temperatures above -40 °C, 9Z isomerizes to the thermodynamically more stable allylborane 9E with >20:1 selectivity. Subsequent treatment of 9Z or 9E with aldehydes at -78 °C provides syn- or anti-β-hydroxyallylsilanes, 7 or 8, respectively.
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Affiliation(s)
- Ming Chen
- Department of Chemistry, Scripps Florida, Jupiter, Florida 33458, USA
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6
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Zhao F, Zhang S, Xi Z. Silyl-substituted 1,3-butadienes for Diels–Alder reaction, ene reaction and allylation reaction. Chem Commun (Camb) 2011; 47:4348-57. [DOI: 10.1039/c0cc05665k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Motokura K, Yoneda H, Miyaji A, Sakamoto Y, Baba T. Catalytic synthesis of homoallyloxyalcohols and 1,2-bis(homoallyloxy)ethanes through ring-opening allylation of cyclic acetals with allylsilanes over solid acids. Catal Sci Technol 2011. [DOI: 10.1039/c1cy00040c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Matsui R, Seto K, Sato Y, Suzuki T, Nakazaki A, Kobayashi S. Convergent Total Synthesis of (+)-TMC-151C by a Vinylogous Mukaiyama Aldol Reaction and Ring-Closing Metathesis. Angew Chem Int Ed Engl 2010; 50:680-3. [DOI: 10.1002/anie.201006230] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Indexed: 11/09/2022]
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9
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Matsui R, Seto K, Sato Y, Suzuki T, Nakazaki A, Kobayashi S. Convergent Total Synthesis of (+)-TMC-151C by a Vinylogous Mukaiyama Aldol Reaction and Ring-Closing Metathesis. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201006230] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Unusual E-Selective Ring-Closing Metathesis To Form Eight-Membered Rings. Angew Chem Int Ed Engl 2010; 49:10068-73. [DOI: 10.1002/anie.201004746] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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11
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Matsui R, Seto K, Fujita K, Suzuki T, Nakazaki A, Kobayashi S. Unusual E-Selective Ring-Closing Metathesis To Form Eight-Membered Rings. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201004746] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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12
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Li D, Cao Y, Shi A, Xi Z. Facile One-Pot Construction of Polycyclic Frameworks using a Synergistic Diels-Alder Reaction, Ene Reaction, and Allylation Reaction Strategy. Chem Asian J 2010; 6:392-5. [DOI: 10.1002/asia.201000257] [Citation(s) in RCA: 10] [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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13
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Goncalves S, Hellier P, Nicolas M, Wagner A, Baati R. Diastereoselective formal total synthesis of (+/-)-triptolide via a novel cationic cyclization of 2-alkenyl-1,3-dithiolane. Chem Commun (Camb) 2010; 46:5778-80. [PMID: 20601993 DOI: 10.1039/c0cc00250j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A concise and diastereoselective formal total synthesis of triptolide, a natural product with a wide range of biological properties, is described. The key reaction is an unprecedented 6-endo-Trig cationic cyclization of a 2-alkenyl-1,3-dithiolane precursor induced by TMSOTf as Lewis acid.
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Affiliation(s)
- Sylvie Goncalves
- University of Strasbourg, Faculty of Pharmacy, Laboratory of Functional ChemoSystems CNRS/UMR 7199, 74 route du Rhin BP60024, 67400 Illkirch, France
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14
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Pulido FJ, Barbero A, Castreño P. Synthesis of 3-Methylenecyclohexan-1-ols by Lewis Acid Catalyzed Cyclization of (Epoxy-allyl)silanes. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901263] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Li W, Shi M. Addition of diphenylphosphinodithioic acid and thioacetic acid with vinylidenecyclopropanes: reversed regioselectivities. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.06.090] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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A novel twist on an old theme: β-Halovinylsilanes, a new elimination approach to oligoyne assembly. CR CHIM 2009. [DOI: 10.1016/j.crci.2008.09.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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Jervis PJ, Cox LR. Total synthesis and proof of relative stereochemistry of (-)-aureonitol. J Org Chem 2008; 73:7616-24. [PMID: 18774862 DOI: 10.1021/jo801338t] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two trisubstituted epimeric tetrahydrofurans, 1 and 2, have been synthesized in order to confirm the relative stereochemistry in the natural product aureonitol. The key step in the synthesis of 1 and 2 involved a stereoselective intramolecular allylation of an allylsilane with an aldehyde, which introduced the stereotriad in the five-membered ring. The major tetrahydrofuran diastereoisomer 18 from this cyclization reaction was subsequently elaborated to tetrahydrofuran 1. Its 3-epimer (2) was then prepared from 1 via an oxidation-reduction sequence. Compound 1 exhibits identical (1)H NMR data to those reported for aureonitol, which was isolated from Helichrysum aureonitons by Bohlmann in 1979, whereas the (1)H NMR data for 2 are markedly different. The (1)H NMR data (in CDCl3, CD3OD, and C6D6) and (13)C NMR data (in CDCl3) for 1 are also identical with those reported for a natural product isolated from various Chaetomium sp. by Abraham, Seto, and Teuscher. These findings support Abraham's conclusion that the structure of aureonitol should be revised from 2 to 1. The enantioselective synthesis of 1 has also confirmed that (-)-aureonitol isolated by Abraham contains the (2S,3R,4S) absolute configuration of stereocenters on the tetrahydrofuran ring.
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Affiliation(s)
- Peter J Jervis
- School of Chemistry, The University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
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