1
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Recyclization of Maleimides by Binucleophiles as a General Approach for Building Hydrogenated Heterocyclic Systems. Molecules 2022; 27:molecules27165268. [PMID: 36014507 PMCID: PMC9416709 DOI: 10.3390/molecules27165268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/12/2022] [Accepted: 08/16/2022] [Indexed: 11/17/2022] Open
Abstract
The building of heterocyclic systems containing hydrogenated fragments is an important step towards the creation of biologically-active compounds with a wide spectrum of pharmacological activity. Among the numerous methods for creating such systems, a special place is occupied by processes using N-substituted maleimides as the initial substrate. This molecule easily reacts in Diels-Alder/retro-Diels-Alder reactions, Michael additions with various nucleophiles, and co-polymerization processes, as have been described in numerous detailed reviews. However, information on the use of maleimides in cascade heterocyclization reactions is currently limited. This study is devoted to a review and analysis of existing literature data on the processes of recyclization of N-substituted maleimides with various C,N-/N,N-/S,N-di- and polynucleophilic agents, such as amidines, guanidines, diamines, aliphatic ketazines, aminouracils, amino- and mercaptoazoles, aminothiourea, and thiocarbomoyl pyrazolines, among others. The significant structural diversity of the recyclization products described in this study illustrates the powerful potential of maleimides as a building block in the organic synthesis of biologically-active compounds with hydrogenated heterocyclic fragments.
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2
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Seibel ZM, Bandar JS, Lambert TH. Enantioenriched α-substituted glutamates/pyroglutamates via enantioselective cyclopropenimine-catalyzed Michael addition of amino ester imines. Beilstein J Org Chem 2021; 17:2077-2084. [PMID: 34476014 PMCID: PMC8381810 DOI: 10.3762/bjoc.17.134] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 08/04/2021] [Indexed: 11/25/2022] Open
Abstract
A procedure for the enantioselective synthesis of α-substituted glutamates and pyroglutamates via a cyclopropenimine-catalyzed Michael addition of amino ester imines is described. Enantioselectivities of up to 94% have been achieved, and a variety of functional groups were found to be compatible. The impact of the catalyst structure and imine substitution is discussed. Compared to other methods, this protocol allows for a broader and more enantioselective access to pyroglutamate derivatives.
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Affiliation(s)
- Zara M Seibel
- Department of Chemistry, Columbia University, New York, New York 10027, USA
| | - Jeffrey S Bandar
- Department of Chemistry, Columbia University, New York, New York 10027, USA
| | - Tristan H Lambert
- Department of Chemistry, Columbia University, New York, New York 10027, USA.,Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA
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3
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Song Y, Kim JH, Kim YC, Kim S. Asymmetric Total Synthesis of Oxazolomycins B and C. Chemistry 2021; 27:10731-10736. [PMID: 33999453 DOI: 10.1002/chem.202101341] [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] [Received: 04/14/2021] [Indexed: 11/08/2022]
Abstract
Efforts towards the first total synthesis of (-)-oxazolomycin B and (+)-oxazolomycin C from the intermediate of our previous synthesis of (+)-neoxazolomycin are reported. The syntheses were achieved in a longest linear sequence of 25 steps from the amino acid serine in 3.6 and 2.7 % overall yields, respectively. The efficiency of our approach is derived from silyl triflate-mediated reductive oxazolidine ring-opening and Fürstner's Ru-catalyzed hydrosilylation and protodesilylation reactions. The obtained spectra and optical rotations were in good agreement with those of natural products, thus confirming the structures.
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Affiliation(s)
- Yeonghun Song
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jae Hyun Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.,College of Pharmacy, Kangwon National University, 1 Kangwondaehak-gil, Chuncheon, Gangwon-do, 24341, Republic of Korea
| | - Young Chan Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Sanghee Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
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4
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Beemelmanns C, Roman D, Sauer M. Applications of the Horner–Wadsworth–Emmons Olefination in Modern Natural Product Synthesis. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1493-6331] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
AbstractThe Horner–Wadsworth–Emmons (HWE) reaction is one of the most reliable olefination reaction and can be broadly applied in organic chemistry and natural product synthesis with excellent selectivity. Within the last few years HWE reaction conditions have been optimized and new reagents developed to overcome challenges in the total syntheses of natural products. This review highlights the application of HWE olefinations in total syntheses of structurally different natural products covering 2015 to 2020. Applied HWE reagents and reactions conditions are highlighted to support future synthetic approaches and serve as guideline to find the best HWE conditions for the most complicated natural products.1 Introduction and Historical Background2 Applications of HWE2.1 Cyclization by HWE Reactions2.2.1 Formation of Medium- to Larger-Sized Rings2.2.2 Formation of Small- to Medium-Sized Rings2.3 Synthesis of α,β-Unsaturated Carbonyl Groups2.4 Synthesis of Substituted C=C Bonds2.5 Late-Stage Modifications by HWE Reactions2.6 HWE Reactions on Solid Supports2.7 Synthesis of Poly-Conjugated C=C Bonds2.8 HWE-Mediated Coupling of Larger Building Blocks2.9 Miscellaneous3 Summary and Outlook
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5
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Senapati BK. Progress in the total synthesis of inthomycins. Beilstein J Org Chem 2021; 17:58-82. [PMID: 33488832 PMCID: PMC7801802 DOI: 10.3762/bjoc.17.7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 12/03/2020] [Indexed: 12/23/2022] Open
Abstract
The inthomycin family of antibiotics, isolated from Streptomyces strains, are interesting molecules for synthesis due to their characteristic common oxazole polyene chiral allylic β-hydroxycarbonyl fragments and significant biological activities. The full structural motif of the inthomycins is found in several more complex natural products including the oxazolomycins, 16-methyloxazolomycin, curromycins A and B, and KSM-2690. This review summarises the application of various efforts towards the synthesis of inthomycins and their analogues systematically.
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Affiliation(s)
- Bidyut Kumar Senapati
- Department of Chemistry, Prabhat Kumar College, Contai, 721404, India, Tel.: +91 8145207480
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6
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Chaheine CM, Gladen PT, Abbasov ME, Romo D. Enantioselective, Organocatalytic Strategy for the Oxazolomycin Core: Formal Synthesis of (+)-Neooxazolomycin. Org Lett 2020; 22:9282-9286. [PMID: 33226820 DOI: 10.1021/acs.orglett.0c03511] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A concise, organocatalytic, enantioselective route to the γ-lactam core of the oxazolomycins was developed. Key steps include a Lewis base-catalyzed, Michael proton transfer-lactamization organocascade, a one-pot N-methylation and diastereoselective α-alkylation, a diastereotopic group-selective reduction, a substrate-directed allylic hydroxylation, and a lanthanide-mediated organolithium addition to append the side chain. A formal synthesis of (+)-neooxazolomycin via interception of a Kende intermediate, accessed in 10 steps (previously 24 steps from α-d-glucose), enabled confirmation of the relative and absolute stereochemistry.
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Affiliation(s)
- Christian M Chaheine
- Department of Chemistry and Biochemistry, Baylor University, 101 Bagby Avenue, Waco, Texas 76798-7046, United States
| | - Paul T Gladen
- Department of Chemistry and Biochemistry, Baylor University, 101 Bagby Avenue, Waco, Texas 76798-7046, United States
| | - Mikail E Abbasov
- Department of Chemistry and Biochemistry, Baylor University, 101 Bagby Avenue, Waco, Texas 76798-7046, United States
| | - Daniel Romo
- Department of Chemistry and Biochemistry, Baylor University, 101 Bagby Avenue, Waco, Texas 76798-7046, United States
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7
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Oka K, Fuchi S, Komine K, Fukuda H, Hatakeyama S, Ishihara J. Catalytic Asymmetric Total Synthesis of Exiguolide. Chemistry 2020; 26:12862-12867. [PMID: 32428309 DOI: 10.1002/chem.202001773] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 05/09/2020] [Indexed: 11/12/2022]
Abstract
The catalytic asymmetric total synthesis of (-)-exiguolide, a complex 20-membered macrolide embedded with a bis(tetrahydropyran) motif, is reported. The convergent synthesis involves the construction of the C1-C11 tetrahydropyran segment via catalytic asymmetric allylation and Prins cyclization, and the formation of the C12-C21 phosphonate segment via catalytic asymmetric cyclocondensation reaction and Johnson-Claisen rearrangement. The synthesis of 15-epi-exiguolide is also described.
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Affiliation(s)
- Kengo Oka
- Graduate School of Biomedical Sciences, Nagasaki University, Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Shunsuke Fuchi
- Graduate School of Biomedical Sciences, Nagasaki University, Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Keita Komine
- Graduate School of Biomedical Sciences, Nagasaki University, Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Hayato Fukuda
- Graduate School of Biomedical Sciences, Nagasaki University, Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Susumi Hatakeyama
- Medical Innovation Center, Nagasaki University, Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Jun Ishihara
- Graduate School of Biomedical Sciences, Nagasaki University, Bunkyo-machi, Nagasaki, 852-8521, Japan
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8
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Komine K, Lambert KM, Savage QR, Cox JB, Wood JL. Synthetic studies toward longeracemine: a SmI 2-mediated spirocyclization and rearrangement cascade to construct the 2-azabicyclo[2.2.1]heptane framework. Chem Sci 2020; 11:9488-9493. [PMID: 34094215 PMCID: PMC8162136 DOI: 10.1039/d0sc03422c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Longeracemine, a member of the Daphniphyllum family of alkaloids contains a novel carbon framework featuring a highly functionalized 2-azabicyclo[2.2.1]heptane core as part of an overall 5/6/5/5/6/5 skeleton. A synthetic intermediate containing the core of longeracemine has been efficiently prepared by employing a stereoselective SmI2-mediated cascade reaction to advance a 7-azabicyclo[2.2.1]heptadiene to a 2-azabicyclo[2.2.1]heptene that is functionally poised for conversion to the natural product.
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Affiliation(s)
- Keita Komine
- Department of Chemistry and Biochemistry, Baylor University One Bear Place 97348 Waco TX 76798 USA
| | - Kyle M. Lambert
- Department of Chemistry and Biochemistry, Baylor UniversityOne Bear Place 97348WacoTX 76798USA
| | - Quentin R. Savage
- Department of Chemistry and Biochemistry, Baylor UniversityOne Bear Place 97348WacoTX 76798USA
| | - Joshua B. Cox
- Department of Chemistry and Biochemistry, Baylor UniversityOne Bear Place 97348WacoTX 76798USA
| | - John L. Wood
- Department of Chemistry and Biochemistry, Baylor UniversityOne Bear Place 97348WacoTX 76798USA
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9
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Fujiwara K. Asymmetric Total Synthesis of Neooxazolomycin. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.634] [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]
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10
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Kim JH, Song Y, Kim MJ, Kim S. Asymmetric Total Synthesis of Inthomycins A, B, and C. J Org Chem 2020; 85:4795-4806. [PMID: 32162914 DOI: 10.1021/acs.joc.0c00017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we report the asymmetric total syntheses of inthomycin antibiotics containing a methylene-interrupted oxazolyl-triene motif. Utilizing the α,β-unsaturated aldehyde as a common intermediate, all three inthomycins A-C were divergently synthesized. The asymmetric ynone reduction provided an R-configured secondary alcohol as in the natural products with high enantioselectivity. The geometrically different triene units for each inthomycin were stereoselectively established via methyl cuprate conjugate addition, isomerization of the α,β-unsaturated aldehyde intermediate, and stereoretentive cross-coupling reactions.
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Affiliation(s)
- Jae Hyun Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Yeonghun Song
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Min Jung Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
| | - Sanghee Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
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11
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A stereoselective approach in preparation of γ-lactam precursors for oxazolomycin’s synthesis. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Kaur N, Ahlawat N, Grewal P, Bhardwaj P, Verma Y. Organo or Metal Complex Catalyzed Synthesis of Five-membered Oxygen Heterocycles. CURR ORG CHEM 2020. [DOI: 10.2174/1385272823666191122111351] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
:The reactions involving the formation of C-O bond using metal as a catalyst have emerged to be one of the most influential reactions for the synthesis of heterocycles in modern organic chemistry. Catalysis by metals offers diverse opportunities to invent new organic reactions with a promising range of selectivities such as chemoselectivity, regioselectivity, diastereoselectivity, and enantioselectivity. The methodologies used earlier for synthesis were less approachable to the organic chemist because of their high cost, highly specified instrumentation and inconvenient methods. For both stereoselective and regioselective formation of five-membered O-containing heterocycles, cyclic reactions that are metal and non-metal-catalyzed have known to be very efficient. The present review article covers the applications of metal and non-metal as a catalyst for the synthesis of five-membered O-containing heterocycles.
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Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022, Rajasthan, India
| | - Neha Ahlawat
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022, Rajasthan, India
| | - Pooja Grewal
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022, Rajasthan, India
| | - Pranshu Bhardwaj
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022, Rajasthan, India
| | - Yamini Verma
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022, Rajasthan, India
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13
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Oleksak P, Gonda J, Nepovimova E, Kuca K, Musilek K. The oxazolomycin family: a review of current knowledge. RSC Adv 2020; 10:40745-40794. [PMID: 35519217 PMCID: PMC9057759 DOI: 10.1039/d0ra08396h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 10/25/2020] [Indexed: 12/19/2022] Open
Abstract
Oxazolomycin A and neooxazolomycin were firstly isolated in 1985 by the group of Uemura et al. from the Streptomyces sp. bacteria.
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Affiliation(s)
- Patrik Oleksak
- University of Hradec Kralove
- Faculty of Science
- Department of Chemistry
- Hradec Kralove
- Czech Republic
| | - Jozef Gonda
- Pavol Jozef Safarik University
- Faculty of Science
- Department of Organic Chemistry
- Kosice
- Slovak Republic
| | - Eugenie Nepovimova
- University of Hradec Kralove
- Faculty of Science
- Department of Chemistry
- Hradec Kralove
- Czech Republic
| | - Kamil Kuca
- University of Hradec Kralove
- Faculty of Science
- Department of Chemistry
- Hradec Kralove
- Czech Republic
| | - Kamil Musilek
- University of Hradec Kralove
- Faculty of Science
- Department of Chemistry
- Hradec Kralove
- Czech Republic
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14
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Kim JH, Kim I, Song Y, Kim MJ, Kim S. Asymmetric Total Synthesis of (+)‐Neooxazolomycin Using a Chirality‐Transfer Strategy. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906158] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jae Hyun Kim
- College of PharmacySeoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Korea
| | - Illan Kim
- College of PharmacySeoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Korea
| | - Yeonghun Song
- College of PharmacySeoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Korea
| | - Min Jung Kim
- College of PharmacySeoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Korea
| | - Sanghee Kim
- College of PharmacySeoul National University 1 Gwanak-ro, Gwanak-gu Seoul 08826 Korea
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15
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Kim JH, Kim I, Song Y, Kim MJ, Kim S. Asymmetric Total Synthesis of (+)-Neooxazolomycin Using a Chirality-Transfer Strategy. Angew Chem Int Ed Engl 2019; 58:11018-11022. [PMID: 31168911 DOI: 10.1002/anie.201906158] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Indexed: 11/09/2022]
Abstract
The total synthesis of (+)-neooxazolomycin was achieved from the amino-acid d-serine. The efficiency of this approach is derived from the use of principles of memory of chirality and dynamic kinetic resolution in the intramolecular aldol reaction of a serine derivative to build the densely functionalized lactam framework and to install three contiguous stereocenters. The key intermediate was readily elaborated to the target natural product.
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Affiliation(s)
- Jae Hyun Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Illan Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Yeonghun Song
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Min Jung Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Sanghee Kim
- College of Pharmacy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
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16
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Nishimaru T, Eto K, Komine K, Ishihara J, Hatakeyama S. Total Synthesis of Lajollamycin B. Chemistry 2019; 25:7927-7934. [DOI: 10.1002/chem.201901069] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Tatsuya Nishimaru
- Graduate School of Biomedical SciencesNagasaki University, Bunkyo-machi Nagasaki 8 52-8521 Japan
| | - Kohei Eto
- Graduate School of Biomedical SciencesNagasaki University, Bunkyo-machi Nagasaki 8 52-8521 Japan
| | - Keita Komine
- Graduate School of Biomedical SciencesNagasaki University, Bunkyo-machi Nagasaki 8 52-8521 Japan
| | - Jun Ishihara
- Graduate School of Biomedical SciencesNagasaki University, Bunkyo-machi Nagasaki 8 52-8521 Japan
| | - Susumi Hatakeyama
- Medical Innovation CenterNagasaki University, Bunkyo-machi Nagasaki 852-8521 Japan
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17
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Eto K, Ishihara J, Hatakeyama S. Stereoselective synthesis of the right-hand cores of 16-methylated oxazolomycins. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.12.036] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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18
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Gil A, Albericio F, Álvarez M. Role of the Nozaki–Hiyama–Takai–Kishi Reaction in the Synthesis of Natural Products. Chem Rev 2017. [DOI: 10.1021/acs.chemrev.7b00144] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Alejandro Gil
- ChemBio Lab, Barcelona Science Park, Baldiri Reixac 10, E-08028 Barcelona, Spain
- CIBER-BBN,
Networking
Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona Science Park, Baldiri Reixac 10, 08028 Barcelona, Spain
| | - Fernando Albericio
- ChemBio Lab, Barcelona Science Park, Baldiri Reixac 10, E-08028 Barcelona, Spain
- CIBER-BBN,
Networking
Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona Science Park, Baldiri Reixac 10, 08028 Barcelona, Spain
- University of Kwa-Zulu-Natal, 4001, Durban, South Africa
| | - Mercedes Álvarez
- ChemBio Lab, Barcelona Science Park, Baldiri Reixac 10, E-08028 Barcelona, Spain
- CIBER-BBN,
Networking
Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona Science Park, Baldiri Reixac 10, 08028 Barcelona, Spain
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19
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20
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Mailyan AK, Eickhoff JA, Minakova AS, Gu Z, Lu P, Zakarian A. Cutting-Edge and Time-Honored Strategies for Stereoselective Construction of C–N Bonds in Total Synthesis. Chem Rev 2016; 116:4441-557. [DOI: 10.1021/acs.chemrev.5b00712] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Artur K. Mailyan
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - John A. Eickhoff
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Anastasiia S. Minakova
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Zhenhua Gu
- Department
of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, China
| | - Ping Lu
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Armen Zakarian
- Department
of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
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21
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Fang Y, Yuan M, Jin X, Zhang L, Li R, Yang S, Fang M. Metal-free diimide reduction of alkenylphosphonates: simple and efficient protocol for the synthesis of α-substituted ethylphosphonates. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.02.057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Chando KM, Bailey PA, Abramite JA, Sammakia T. Regioselective Ring Opening of Di-isopropylsilylenes Derived from 1,3-Diols with Alkyl Lithium Reagents. Org Lett 2015; 17:5196-9. [DOI: 10.1021/acs.orglett.5b02529] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Katelyn M. Chando
- Department of Chemistry and
Biochemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Patricia A. Bailey
- Department of Chemistry and
Biochemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Joseph A. Abramite
- Department of Chemistry and
Biochemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Tarek Sammakia
- Department of Chemistry and
Biochemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
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23
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Trost BM, Biannic B, Brindle CS, O'Keefe BM, Hunter TJ, Ngai MY. A Highly Convergent Total Synthesis of Leustroducsin B. J Am Chem Soc 2015; 137:11594-7. [PMID: 26313159 PMCID: PMC4621997 DOI: 10.1021/jacs.5b07438] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
Leustroducsin
B exhibits a large variety of biological activities
and unique structural features. An efficient and highly convergent
total synthesis of Leustroducsin B was achieved in 17 longest linear
and 39 total steps by disconnecting the molecule into three fragments
having similar levels of complexity. These pieces were connected via
a highly efficient chelate-controlled addition of a vinyl zincate
to an α-hydroxy ketone and a silicon-mediated cross-coupling.
The stereochemistry of the central and western fragments was set catalytically
in high yields and excellent de by a zinc-ProPhenol-catalyzed aldol
reaction and a palladium-catalyzed asymmetric allylic alkylation.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University , Stanford, California 94305-5580, United States
| | - Berenger Biannic
- Department of Chemistry, Stanford University , Stanford, California 94305-5580, United States
| | - Cheyenne S Brindle
- Department of Chemistry, Stanford University , Stanford, California 94305-5580, United States
| | - B Michael O'Keefe
- Department of Chemistry, Stanford University , Stanford, California 94305-5580, United States
| | - Thomas J Hunter
- Department of Chemistry, Stanford University , Stanford, California 94305-5580, United States
| | - Ming-Yu Ngai
- Department of Chemistry, Stanford University , Stanford, California 94305-5580, United States
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24
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Ishihara J, Hatakeyama S. Total Synthesis of Oxazolomycins. CHEM REC 2014; 14:663-77. [DOI: 10.1002/tcr.201402009] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Indexed: 01/22/2023]
Affiliation(s)
- Jun Ishihara
- Graduate School of Biomedical Sciences; Nagasaki University; Nagasaki 852-8521 Japan
| | - Susumi Hatakeyama
- Graduate School of Biomedical Sciences; Nagasaki University; Nagasaki 852-8521 Japan
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25
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Hatakeyama S. Total Synthesis of Biologically Active Natural Products Based on Highly Selective Synthetic Methodologies. Chem Pharm Bull (Tokyo) 2014; 62:1045-61. [DOI: 10.1248/cpb.c14-00474] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Susumi Hatakeyama
- Graduate School of Biomedical Sciences, Nagasaki University, 1–14 Bunkyo-machi, Nagasaki 852–8521, Japan
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26
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Liu J, Zhang HR, Lin XR, Yan SJ, Lin J. Catalyst-free cascade reaction of heterocyclic ketene aminals with N-substituted maleimide to synthesise bicyclic pyrrolidinone derivatives. RSC Adv 2014. [DOI: 10.1039/c4ra03863k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
An efficient synthesis of bicyclic pyrrolidinones via a cascade reaction of HKAs and N-substituted maleimide in an environmentally friendly medium is described. This protocol uses group-assisted purification (GAP) chemistry. The library of bicyclic pyrrolidinone derivatives has been constructed with moderate to excellent yields.
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Affiliation(s)
- Jin Liu
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University)
- Ministry Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming, P. R. China
| | - Hai-Rui Zhang
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University)
- Ministry Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming, P. R. China
| | - Xin-Rong Lin
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University)
- Ministry Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming, P. R. China
| | - Sheng-Jiao Yan
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University)
- Ministry Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming, P. R. China
| | - Jun Lin
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University)
- Ministry Education
- School of Chemical Science and Technology
- Yunnan University
- Kunming, P. R. China
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27
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Ohashi K, Mihara S, Sato AH, Ide M, Iwasawa T. Synthesis of 1-haloethenamides from ynamide through halotrimethylsilane-mediated hydrohalogenation. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.11.091] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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28
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Alcaide B, Almendros P, Aragoncillo C, Callejo R, Ruiz MP. Organocatalyzed Three-Component Ugi and Passerini Reactions of 4-Oxoazetidine-2-carbaldehydes and Azetidine-2,3-diones. Application to the Synthesis of γ-Lactams and γ-Lactones. J Org Chem 2013; 78:10154-65. [DOI: 10.1021/jo4015358] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Benito Alcaide
- Grupo de Lactamas
y Heterociclos Bioactivos, Departamento de Química Orgánica
I, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040-Madrid, Spain
| | - Pedro Almendros
- Instituto
de Química
Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006-Madrid, Spain
| | - Cristina Aragoncillo
- Grupo de Lactamas
y Heterociclos Bioactivos, Departamento de Química Orgánica
I, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040-Madrid, Spain
| | - Ricardo Callejo
- Grupo de Lactamas
y Heterociclos Bioactivos, Departamento de Química Orgánica
I, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040-Madrid, Spain
| | - M. Pilar Ruiz
- Grupo de Lactamas
y Heterociclos Bioactivos, Departamento de Química Orgánica
I, Unidad Asociada al CSIC, Facultad de Química, Universidad Complutense de Madrid, 28040-Madrid, Spain
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29
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Urabe F, Nagashima S, Takahashi K, Ishihara J, Hatakeyama S. Total Synthesis of (−)-Cinatrin C1 Based on an In(OTf)3-Catalyzed Conia-Ene Reaction. J Org Chem 2013; 78:3847-57. [DOI: 10.1021/jo400263w] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Fumiya Urabe
- Graduate School of Biomedical
Sciences, Nagasaki University, 1-14 Bunkyo-machi,
Nagasaki 852-8521,
Japan
| | - Shunsuke Nagashima
- Graduate School of Biomedical
Sciences, Nagasaki University, 1-14 Bunkyo-machi,
Nagasaki 852-8521,
Japan
| | - Keisuke Takahashi
- Graduate School of Biomedical
Sciences, Nagasaki University, 1-14 Bunkyo-machi,
Nagasaki 852-8521,
Japan
| | - Jun Ishihara
- Graduate School of Biomedical
Sciences, Nagasaki University, 1-14 Bunkyo-machi,
Nagasaki 852-8521,
Japan
| | - Susumi Hatakeyama
- Graduate School of Biomedical
Sciences, Nagasaki University, 1-14 Bunkyo-machi,
Nagasaki 852-8521,
Japan
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30
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Yoshino M, Eto K, Takahashi K, Ishihara J, Hatakeyama S. Organocatalytic asymmetric syntheses of inthomycins A, B and C. Org Biomol Chem 2013; 10:8164-74. [PMID: 22971928 DOI: 10.1039/c2ob26084k] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The total syntheses of (+)-inthomycin A, (+)-inthomycin B and (-)-inthomycin C, the oxazole-triene antibiotics isolated from Streptomyces sp., have been accomplished via the highly enantio- and stereoselective construction of the C1-C7 (iododienyl)aldol units by taking advantage of a Cinchona alkaloid-catalyzed asymmetric β-lactone synthesis and their isomerisation-free Stille coupling with (E)-5-(3-(tributylstannyl)allyl)oxazole.
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Affiliation(s)
- Madoka Yoshino
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki 852-8521, Japan
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31
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Prusov EV. Total synthesis of antibiotics: recent achievements, limitations, and perspectives. Appl Microbiol Biotechnol 2013; 97:2773-95. [DOI: 10.1007/s00253-013-4757-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 02/04/2013] [Accepted: 02/05/2013] [Indexed: 10/27/2022]
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32
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Ankner T, Cosner CC, Helquist P. Palladium- and nickel-catalyzed alkenylation of enolates. Chemistry 2013; 19:1858-71. [PMID: 23325616 DOI: 10.1002/chem.201202798] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Transition-metal-catalyzed alkenylation of enolates provides a direct method to synthesize broadly useful β,γ-unsaturated carbonyl compounds from the corresponding carbonyl compound and alkenyl halides. Despite being reported in the early seventies, this reaction class saw little development for many years. In the past decade, however, efforts to develop this reaction further have increased considerably, and many research groups have reported efficient coupling protocols, including enantioselective versions. These reactions most commonly employ palladium catalysts, but there are also some important reports using nickel. There are many examples of this powerful transformation being used in the synthesis of complex natural products.
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Affiliation(s)
- Tobias Ankner
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 106 91 Stockholm, Sweden
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33
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Stereoselective cyanation of 4-formyl and 4-imino-?-lactams: application to the synthesis of polyfunctionalized ?-lactams. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.02.062] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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34
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Shen ZL, Wang SY, Chok YK, Xu YH, Loh TP. Organoindium Reagents: The Preparation and Application in Organic Synthesis. Chem Rev 2012; 113:271-401. [DOI: 10.1021/cr300051y] [Citation(s) in RCA: 194] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Zhi-Liang Shen
- Division of Chemistry and Biological
Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological
University, Singapore 637371
| | - Shun-Yi Wang
- Division of Chemistry and Biological
Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological
University, Singapore 637371
| | - Yew-Keong Chok
- Division of Chemistry and Biological
Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological
University, Singapore 637371
| | - Yun-He Xu
- Department
of Chemistry, University
of Science and Technology of China, Hefei 230026, P. R. China
- Division of Chemistry and Biological
Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological
University, Singapore 637371
| | - Teck-Peng Loh
- Department
of Chemistry, University
of Science and Technology of China, Hefei 230026, P. R. China
- Division of Chemistry and Biological
Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological
University, Singapore 637371
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35
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Donohoe TJ, O’Riordan TJC, Peifer M, Jones CR, Miles TJ. Asymmetric Synthesis of the Fully Elaborated Pyrrolidinone Core of Oxazolomycin A. Org Lett 2012; 14:5460-3. [DOI: 10.1021/ol302541j] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Timothy J. Donohoe
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Medicines Research Centre, GlaxoSmithKline, Gunnels Wood Road, Stevenage, SG1 2NY, U.K
| | - Timothy J. C. O’Riordan
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Medicines Research Centre, GlaxoSmithKline, Gunnels Wood Road, Stevenage, SG1 2NY, U.K
| | - Manuel Peifer
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Medicines Research Centre, GlaxoSmithKline, Gunnels Wood Road, Stevenage, SG1 2NY, U.K
| | - Christopher R. Jones
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Medicines Research Centre, GlaxoSmithKline, Gunnels Wood Road, Stevenage, SG1 2NY, U.K
| | - Timothy J. Miles
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Medicines Research Centre, GlaxoSmithKline, Gunnels Wood Road, Stevenage, SG1 2NY, U.K
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36
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Barbier J, Wegner J, Benson S, Gentzsch J, Pietschmann T, Kirschning A. Total Synthesis of a Noricumazole A Library and Evaluation of HCV Inhibition. Chemistry 2012; 18:9083-90. [DOI: 10.1002/chem.201104042] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Indexed: 11/08/2022]
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37
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Angelov P, Chau YKS, Fryer PJ, Moloney MG, Thompson AL, Trippier PC. Biomimetic synthesis, antibacterial activity and structure-activity properties of the pyroglutamate core of oxazolomycin. Org Biomol Chem 2012; 10:3472-85. [PMID: 22437843 DOI: 10.1039/c2ob00042c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Biomimetic intramolecular aldol reactions on oxazolidine templates derived from serine may be used to generate densely functionalised pyroglutamates, which are simpler mimics of the right hand side of oxazolomycin. Some of the compounds from this sequence exhibit in vivo activity against S. aureus and E. coli, suggesting that pyroglutamate scaffolds may be useful templates for the development of novel antibacterials, and cheminformatic analysis has been used to provide some structure-activity data.
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Affiliation(s)
- Plamen Angelov
- Department of Chemistry, Chemistry Research Laboratory, The University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
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38
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39
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Bastin R, Dale JW, Edwards MG, Papillon JP, Webb MR, Taylor RJ. Formal synthesis of (+)-neooxazolomycin via a Stille cross-coupling/deconjugation route. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.09.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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40
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Teng HL, Luo FL, Tao HY, Wang CJ. A Facile Cu(I)/BINAP-Catalyzed Asymmetric Approach to Functionalized Pyroglutamate Derivatives Bearing a Unique Quaternary Stereogenic Center. Org Lett 2011; 13:5600-3. [DOI: 10.1021/ol202326j] [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)
- Huai-Long Teng
- College of Chemistry and Molecular Sciences, Wuhan University, 430072, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai, 230012, China
| | - Fei-Long Luo
- College of Chemistry and Molecular Sciences, Wuhan University, 430072, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai, 230012, China
| | - Hai-Yan Tao
- College of Chemistry and Molecular Sciences, Wuhan University, 430072, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai, 230012, China
| | - Chun-Jiang Wang
- College of Chemistry and Molecular Sciences, Wuhan University, 430072, China, and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai, 230012, China
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41
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Eto K, Yoshino M, Takahashi K, Ishihara J, Hatakeyama S. Total Synthesis of Oxazolomycin A. Org Lett 2011; 13:5398-401. [DOI: 10.1021/ol202306d] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kohei Eto
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Madoka Yoshino
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Keisuke Takahashi
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Jun Ishihara
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8521, Japan
| | - Susumi Hatakeyama
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8521, Japan
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42
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43
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Tekkam S, Alam MA, Jonnalagadda SC, Mereddy VR. Novel methodologies for the synthesis of functionalized pyroglutamates. Chem Commun (Camb) 2011; 47:3219-21. [DOI: 10.1039/c0cc05609j] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Tellam JP, Carbery DR. Development of the Ireland−Claisen Rearrangement of Alkoxy- and Aryloxy-Substituted Allyl Glycinates. J Org Chem 2010; 75:7809-21. [PMID: 20958078 DOI: 10.1021/jo1017124] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- James P. Tellam
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
| | - David R. Carbery
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
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45
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Affiliation(s)
- Wilfried Hess
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA (UK), Fax: (+44) 1865‐285002
| | - Jonathan W. Burton
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA (UK), Fax: (+44) 1865‐285002
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46
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Wang A, Jiang H. Palladium-catalyzed direct oxidation of alkenes with molecular oxygen: general and practical methods for the preparation of 1,2-diols, aldehydes, and ketones. J Org Chem 2010; 75:2321-6. [PMID: 20205415 DOI: 10.1021/jo100125q] [Citation(s) in RCA: 181] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
1,2-Diols, aldehydes, and ketones are important intermediates in chemical synthesis, and alkenes are possible precursors for 1,2-diols, aldehydes, and ketones. Herein, novel and environmentally benign methods for palladium-catalyzed dihydroxylation and oxidative cleavage of olefins with oxygen as sole oxidant are presented. The cleavage reactions were performed with acid as additive in aqueous solution, whereas 1,2-diols were formed in the presence of base. A broad substrate scope has been demonstrated allowing monosubstituted aromatic and aliphatic terminal alkenes, 1,2-disubstituted, and 1,1-disubstituted olefins. The cleavage reactions of dioxo-Pd(II) complexes implicate 1,2-diol might act as a key intermediate of olefin cleavage.
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Affiliation(s)
- Azhong Wang
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China
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47
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Takahashi K, Hatakeyama S. Indium-catalyzed Conia-ene Reaction and Total Syntheses of Biologically Active Alkaloids. J SYN ORG CHEM JPN 2010. [DOI: 10.5059/yukigoseikyokaishi.68.951] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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48
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Marsh BJ, Carbery DR. One-pot o-nitrobenzenesulfonylhydrazide (NBSH) formation-diimide alkene reduction protocol. J Org Chem 2009; 74:3186-8. [PMID: 19354327 DOI: 10.1021/jo900237y] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A one-pot protocol for the formation of 2-nitrobenzenesulfonylhydrazide (NBSH) from commercial reagents and subsequent alkene reduction is presented. The transformation is operationally simple and generally efficient for effecting diimide alkene reductions. A range of 16 substrates have been reduced, highlighting the unique chemoselectivity of diimide as a reduction system.
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Affiliation(s)
- Barrie J Marsh
- Department of Chemistry, University of Bath, Bath, BA2 7AY, UK
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49
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Abstract
In(OTf)3-catalyzed cyclization of nitrogen- and oxygen-tethered acetylenic malonic esters provides various five- to seven-membered heterocycles in moderate to excellent yield, and the reaction proceeds with no racemization and complete E-selectivity in the case of chiral and nonterminal alkynes. The synthetic utility is demonstrated by the synthesis of (-)-salinosporamide A, a highly potent 20S proteasome inhibitor, and (+)-neooxazolomycin, a member of the oxazolomycin family of antibiotics.
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50
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Yamada T, Sakaguchi K, Shinada T, Ohfune Y, Soloshonok VA. Efficient asymmetric synthesis of the functionalized pyroglutamate core unit common to oxazolomycin and neooxazolomycin using Michael reaction of nucleophilic glycine Schiff base with α,β-disubstituted acrylate. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.11.036] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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